FPCN11 CWTO 120900 AAA
Updated forecasts for Southern Ontario and the National Capital
Region issued by Environment Canada at 5:00 a.m. EDT Tuesday 12 May
2026 for today and Wednesday.
The next scheduled forecast will be issued at 11:00 a.m. EDT.

City of Toronto.
Today..Sunny. Increasing cloudiness this afternoon. High 13. UV
index 7 or high.
Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming east 20 km/h gusting to 40 after midnight.
Low 6.
Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
southeast 20 km/h gusting to 40 becoming light in the morning. Wind
becoming west 20 gusting to 40 late in the morning. High 16. UV
index 4 or moderate.

Windsor - Leamington - Essex County.
Today..Sunny. Increasing cloudiness this afternoon then 40 percent
chance of showers late this afternoon. Wind becoming southeast
20 km/h late this afternoon. High 17. UV index 7 or high.
Tonight..Cloudy. 40 percent chance of showers early this evening.
Showers beginning this evening. Risk of a thunderstorm late this
evening and overnight. Amount 10 to 15 mm. Wind southeast 20 km/h
gusting to 40 becoming southwest 30 gusting to 50 late this evening.
Low 12.
Wednesday..Cloudy with 40 percent chance of showers. Wind northwest
30 km/h gusting to 50. High 15. UV index 2 or low.

Chatham-Kent - Rondeau Park.
Today..Sunny. Increasing cloudiness this afternoon then 40 percent
chance of showers late this afternoon. Wind becoming southeast
20 km/h late this afternoon. High 14. UV index 7 or high.
Tonight..Cloudy. 40 percent chance of showers early this evening.
Showers beginning this evening. Risk of a thunderstorm late this
evening and overnight. Amount 10 to 15 mm. Wind southeast 20 km/h
gusting to 50 becoming southwest 30 gusting to 50 after midnight.
Low 12.
Wednesday..Cloudy with 40 percent chance of showers. Wind northwest
30 km/h gusting to 50. High 15. UV index 3 or moderate.

Sarnia - Petrolia - Western Lambton County.
Today..Sunny. Increasing cloudiness this afternoon then 40 percent
chance of showers late this afternoon. Wind becoming south 20 km/h
late this morning. High 14. UV index 7 or high.
Tonight..Cloudy. 40 percent chance of showers early this evening.
Showers beginning this evening. Risk of a thunderstorm late this
evening and overnight. Amount 10 to 15 mm. Wind south 20 km/h
becoming west 20 gusting to 40 before morning. Low 9.
Wednesday..Cloudy with 40 percent chance of showers. Wind northwest
30 km/h gusting to 50. High 14. UV index 2 or low.

Watford - Pinery Park - Eastern Lambton County.
Today..Sunny. Increasing cloudiness this afternoon then 40 percent
chance of showers late this afternoon. High 14. UV index 7 or high. Tonight..Cloudy. 40 percent chance of showers early this evening.
Showers beginning this evening. Risk of a thunderstorm late this
evening and overnight. Amount 10 to 15 mm. Wind becoming southwest
20 km/h gusting to 40 before morning. Low 9.
Wednesday..Cloudy with 40 percent chance of showers. Wind southwest
20 km/h gusting to 40 becoming northwest 30 gusting to 50 late in
the morning. High 14. UV index 4 or moderate.

Rodney - Shedden - Western Elgin County.
Today..Sunny. Increasing cloudiness this afternoon then 40 percent
chance of showers late this afternoon. High 13. UV index 7 or high. Tonight..Cloudy. 40 percent chance of showers early this evening.
Showers beginning this evening. Risk of a thunderstorm late this
evening and overnight. Amount 10 to 15 mm. Wind becoming southeast
20 km/h gusting to 50 this evening then becoming southwest 20 after
midnight. Low 10.
Wednesday..Cloudy with 40 percent chance of showers. Wind northwest
30 km/h gusting to 50. High 14. UV index 4 or moderate.

St. Thomas - Aylmer - Eastern Elgin County.
Today..Sunny. Increasing cloudiness early this afternoon. High 13. UV
index 7 or high.
Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming south 20 km/h gusting to 40 after midnight.
Low 9.
Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
southwest 20 km/h gusting to 40 becoming northwest 30 gusting to 50
late in the morning. High 15. UV index 4 or moderate.

Strathroy - Komoka - Western Middlesex County.
Today..Sunny. Increasing cloudiness this afternoon then 40 percent
chance of showers late this afternoon. High 13. UV index 7 or high. Tonight..Cloudy. 40 percent chance of showers early this evening.
Showers beginning this evening. Risk of a thunderstorm late this
evening and overnight. Amount 10 to 15 mm. Wind becoming west
20 km/h before morning. Low 9.
Wednesday..Cloudy with 40 percent chance of showers. Wind northwest
30 km/h gusting to 50. High 14. UV index 2 or low.

London - Parkhill - Eastern Middlesex County.
Today..Sunny. Increasing cloudiness this afternoon then 40 percent
chance of showers late this afternoon. High 13. UV index 7 or high. Tonight..Cloudy. 40 percent chance of showers early this evening.
Showers beginning this evening. Risk of a thunderstorm late this
evening and overnight. Amount 10 to 15 mm. Wind becoming southwest
20 km/h before morning. Low 8.
Wednesday..Cloudy with 40 percent chance of showers. Wind southwest
20 km/h gusting to 40 becoming northwest 30 gusting to 50 late in
the morning. High 14. UV index 4 or moderate.

Simcoe - Delhi - Norfolk.
Today..Sunny. Increasing cloudiness this afternoon. High 13. UV
index 7 or high.
Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming southwest 20 km/h gusting to 40 after
midnight. Low 8.
Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
southwest 20 km/h gusting to 40 becoming northwest 30 gusting to 50
in the afternoon. High 16. UV index 4 or moderate.

Dunnville - Caledonia - Haldimand.
Today..Sunny. Becoming a mix of sun and cloud this afternoon.
High 13. UV index 7 or high.
Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming southwest 20 km/h before morning. Low 8. Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
west 30 km/h gusting to 50. High 16. UV index 4 or moderate.

Woodstock - Tillsonburg - Oxford County.
Today..Sunny. Increasing cloudiness this afternoon. Wind becoming
south 20 km/h late this afternoon. High 13. UV index 7 or high. Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind south 20 km/h. Low 8.
Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
southwest 20 km/h gusting to 40 becoming northwest 30 gusting to 50
late in the morning. High 14. UV index 2 or low.

Brantford - County of Brant.
Today..Sunny. Increasing cloudiness this afternoon. High 13. UV
index 7 or high.
Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming southwest 20 km/h before morning. Low 7. Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
west 30 km/h gusting to 50. High 15. UV index 4 or moderate.

Niagara Falls - Welland - Southern Niagara Region.
Today..Sunny. Becoming a mix of sun and cloud this afternoon.
High 15. UV index 7 or high.
Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming southwest 20 km/h before morning. Low 8. Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
southwest 30 km/h gusting to 50. High 17. UV index 4 or moderate.

St. Catharines - Grimsby - Northern Niagara Region.
Today..Sunny. Becoming a mix of sun and cloud this afternoon.
High 13. UV index 7 or high.
Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming southwest 20 km/h before morning. Low 7. Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
southwest 30 km/h gusting to 50. High 17. UV index 4 or moderate.

City of Hamilton.
Today..Sunny. Becoming a mix of sun and cloud this afternoon.
High 13. UV index 7 or high.
Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming southwest 20 km/h before morning. Low 6. Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
west 30 km/h gusting to 50. High 16. UV index 4 or moderate.

Burlington - Oakville.
Today..Sunny. Becoming a mix of sun and cloud this afternoon.
High 12. UV index 7 or high.
Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming east 20 km/h late this evening. Low 6. Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
becoming west 30 km/h gusting to 50 in the morning. High 16. UV
index 4 or moderate.

Halton Hills - Milton.
Today..Sunny. Increasing cloudiness this afternoon. High 13. UV
index 7 or high.
Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Low plus 5.
Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
becoming west 20 km/h gusting to 40 in the morning. High 15. UV
index 4 or moderate.

Mississauga - Brampton.
Today..Sunny. Increasing cloudiness this afternoon. High 13. UV
index 7 or high.
Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming southeast 20 km/h after midnight. Low 6. Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
becoming west 20 km/h gusting to 40 in the morning. High 16. UV
index 4 or moderate.

Caledon.
Today..Sunny. Increasing cloudiness this afternoon. High 12. UV
index 7 or high.
Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming southeast 20 km/h gusting to 40 late this
evening. Low plus 5.
Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
becoming west 20 km/h gusting to 40 in the morning. High 13. UV
index 4 or moderate.

Vaughan - Richmond Hill - Markham.
Today..Sunny. Increasing cloudiness this afternoon. High 13. UV
index 7 or high.
Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming southeast 20 km/h gusting to 40 late this
evening. Low plus 5.
Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
southeast 20 km/h becoming light in the morning. Wind becoming west
20 gusting to 40 late in the morning. High 15. UV index 4 or
moderate.

Newmarket - Georgina - Northern York Region.
Today..Sunny. Increasing cloudiness this afternoon. High 13. UV
index 7 or high.
Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming southeast 20 km/h gusting to 40 late this
evening. Low plus 5.
Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
southeast 20 km/h becoming light in the morning. Wind becoming west
20 gusting to 40 late in the morning. High 14. UV index 4 or
moderate.

Pickering - Oshawa - Southern Durham Region.
Today..Sunny. Becoming a mix of sun and cloud this afternoon.
High 12. UV index 6 or high.
Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming east 20 km/h gusting to 40 after midnight.
Low plus 5.
Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
southeast 20 km/h gusting to 40 becoming light in the morning. Wind
becoming west 20 gusting to 40 late in the morning. High 15. UV
index 5 or moderate.

Uxbridge - Beaverton - Northern Durham Region.
Today..Sunny. Increasing cloudiness this afternoon. High 12. UV
index 6 or high.
Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming east 20 km/h gusting to 40 after midnight.
Low plus 5.
Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
southeast 20 km/h becoming light in the morning. Wind becoming
northwest 30 gusting to 50 late in the morning. High 14. UV index 4
or moderate.

Goderich - Bluewater - Southern Huron County.
Today..Sunny. Increasing cloudiness this afternoon then 40 percent
chance of showers late this afternoon. Wind becoming southeast
20 km/h late this afternoon. High 13. UV index 7 or high.
Tonight..Cloudy. 40 percent chance of showers early this evening.
Showers beginning this evening. Risk of a thunderstorm late this
evening and overnight. Amount 10 to 15 mm. Wind southeast 20 km/h
gusting to 40. Low 8.
Wednesday..Cloudy with 60 percent chance of showers. Wind northwest
30 km/h gusting to 50. High 11. UV index 2 or low.

Wingham - Blyth - Northern Huron County.
Today..Sunny. Increasing cloudiness this afternoon then 40 percent
chance of showers late this afternoon. Wind becoming southeast
20 km/h late this afternoon. High 13. UV index 7 or high.
Tonight..Cloudy. 40 percent chance of showers early this evening.
Showers beginning this evening. Risk of a thunderstorm late this
evening and overnight. Amount 10 to 15 mm. Wind southeast 20 km/h
gusting to 40. Low 7.
Wednesday..Cloudy with 60 percent chance of showers. Wind northwest
30 km/h gusting to 50. High 11. UV index 2 or low.

Stratford - Mitchell - Southern Perth County.
Today..Sunny. Increasing cloudiness this afternoon then 40 percent
chance of showers late this afternoon. High 13. UV index 7 or high. Tonight..Cloudy. 40 percent chance of showers early this evening.
Showers beginning this evening. Risk of a thunderstorm late this
evening and overnight. Amount 10 to 15 mm. Wind becoming south
20 km/h gusting to 40 late this evening. Low 7.
Wednesday..Cloudy with 60 percent chance of showers. Wind southwest
20 km/h gusting to 40 becoming northwest 30 gusting to 50 late in
the morning. High 13. UV index 2 or low.

Listowel - Milverton - Northern Perth County.
Today..Sunny. Increasing cloudiness this afternoon then 40 percent
chance of showers late this afternoon. High 12. UV index 7 or high. Tonight..Cloudy. 40 percent chance of showers early this evening.
Showers beginning this evening. Risk of a thunderstorm late this
evening and overnight. Amount 10 to 15 mm. Wind becoming south
20 km/h gusting to 40 late this evening. Low 6.
Wednesday..Cloudy with 60 percent chance of showers. Wind southwest
20 km/h gusting to 40 becoming northwest 30 gusting to 50 late in
the morning. High 12. UV index 2 or low.

Kitchener - Cambridge - Region of Waterloo.
Today..Sunny. Increasing cloudiness this afternoon. Wind up to 15
km/h. High 13. Wind chill minus 4 this morning. UV index 7 or high. Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming southeast 20 km/h gusting to 40 late this
evening. Low plus 5.
Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
west 30 km/h gusting to 50. High 14. UV index 2 or low.

Guelph - Erin - Southern Wellington County.
Today..Sunny. Increasing cloudiness this afternoon. High 13. UV
index 7 or high.
Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming southeast 20 km/h gusting to 40 late this
evening. Low plus 5.
Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
west 30 km/h gusting to 50. High 14. UV index 4 or moderate.

Mount Forest - Arthur - Northern Wellington County.
Today..Sunny. Increasing cloudiness this afternoon then 40 percent
chance of showers late this afternoon. Wind up to 15 km/h. High 12.
Wind chill minus 6 this morning. UV index 7 or high.
Tonight..Cloudy. 40 percent chance of showers early this evening.
Showers beginning this evening. Risk of a thunderstorm late this
evening and overnight. Amount 10 to 15 mm. Wind becoming southeast
20 km/h gusting to 40 late this evening. Low plus 5.
Wednesday..Cloudy with 60 percent chance of showers. Wind west
20 km/h gusting to 40. High 11. UV index 2 or low.

Orangeville - Grand Valley - Southern Dufferin County.
Today..Sunny. Increasing cloudiness this afternoon. Wind up to 15
km/h. High 12. Wind chill minus 4 this morning. UV index 7 or high. Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming southeast 20 km/h gusting to 40 late this
evening. Low plus 5.
Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
becoming west 20 km/h gusting to 40 in the morning. High 12. UV
index 4 or moderate.

Shelburne - Mansfield - Northern Dufferin County.
Today..Sunny. Increasing cloudiness this afternoon. Wind up to 15
km/h. High 12. Wind chill minus 4 this morning. UV index 7 or high. Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming southeast 20 km/h gusting to 40 late this
evening. Low plus 5.
Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
becoming west 20 km/h gusting to 40 in the morning. High 12. UV
index 4 or moderate.

Innisfil - New Tecumseth - Angus.
Today..Sunny. Increasing cloudiness this afternoon. High 13. UV
index 7 or high.
Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming southeast 20 km/h gusting to 40 late this
evening. Low plus 5.
Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
becoming west 20 km/h gusting to 40 in the morning. High 13. UV
index 4 or moderate.

Saugeen Shores - Kincardine - Southern Bruce County.
Today..Sunny. Increasing cloudiness this afternoon then 40 percent
chance of showers late this afternoon. Wind becoming southeast
20 km/h late this afternoon. High 12. UV index 6 or high.
Tonight..Cloudy. 40 percent chance of showers early this evening.
Showers beginning this evening. Risk of a thunderstorm late this
evening and overnight. Amount 10 to 15 mm. Wind southeast 20 km/h
gusting to 40. Low 6.
Wednesday..Cloudy with 60 percent chance of showers. Wind becoming
northwest 30 km/h gusting to 50 in the morning. High 10. UV index 2
or low.

Bruce Peninsula - Sauble Beach - Tobermory.
Today..Sunny. Increasing cloudiness this afternoon then 40 percent
chance of showers late this afternoon. Wind becoming southeast
20 km/h late this afternoon. High 12. UV index 6 or high.
Tonight..Cloudy. 40 percent chance of showers early this evening.
Showers beginning this evening. Risk of a thunderstorm late this
evening and overnight. Amount 10 to 15 mm. Wind southeast 20 km/h
gusting to 40. Low 6.
Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Wind becoming northwest 30 km/h gusting to 50 in
the morning. High 10. UV index 3 or moderate.

Hanover - Dundalk - Southern Grey County.
Today..Sunny. Increasing cloudiness this afternoon then 40 percent
chance of showers late this afternoon. Wind becoming southeast
20 km/h late this afternoon. High 12. Wind chill minus 5 this
morning. UV index 7 or high.
Tonight..Cloudy. 40 percent chance of showers early this evening.
Showers beginning this evening. Risk of a thunderstorm late this
evening and overnight. Amount 10 to 15 mm. Wind southeast 20 km/h
gusting to 40. Low plus 5.
Wednesday..Cloudy with 60 percent chance of showers. Wind west
20 km/h gusting to 40. High 11. UV index 2 or low.

Owen Sound - Blue Mountains - Northern Grey County.
Today..Sunny. Increasing cloudiness this afternoon then 40 percent
chance of showers late this afternoon. High 12. UV index 7 or high. Tonight..Cloudy. 40 percent chance of showers early this evening.
Showers beginning this evening. Risk of a thunderstorm late this
evening and overnight. Amount 10 to 15 mm. Wind becoming south
20 km/h gusting to 40 this evening. Low plus 5.
Wednesday..Cloudy with 60 percent chance of showers. Wind southwest
20 km/h becoming northwest 20 gusting to 40 late in the morning.
High 11. UV index 2 or low.

Barrie - Collingwood - Hillsdale.
Today..Sunny. Increasing cloudiness late this afternoon. High 13. UV
index 6 or high.
Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming southeast 20 km/h gusting to 40 late this
evening. Low plus 5.
Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
becoming west 20 km/h gusting to 40 in the morning. High 11. UV
index 4 or moderate.

Midland - Coldwater - Orr Lake.
Today..Sunny. Increasing cloudiness this afternoon. High 13. UV
index 6 or high.
Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming southeast 20 km/h gusting to 40 this
evening. Low plus 5.
Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
becoming west 30 km/h gusting to 50 in the morning. High 11. UV
index 4 or moderate.

Orillia - Lagoon City - Washago.
Today..Sunny. Increasing cloudiness this afternoon. Wind up to 15
km/h. High 13. Wind chill minus 6 this morning. UV index 6 or high. Tonight..Cloudy. 40 percent chance of showers this evening. Showers
beginning near midnight. Risk of a thunderstorm overnight. Amount 10
to 15 mm. Wind becoming southeast 20 km/h gusting to 40 this
evening. Low plus 5.
Wednesday..Showers ending in the morning then cloudy with 60 percent
chance of showers. Risk of a thunderstorm early in the morning. Wind
becoming west 30 km/h gusting to 50 late in the morning. High 11. UV
index 4 or moderate.

Cobourg - Colborne - Western Northumberland County.
Today..Sunny. High 12. UV index 6 or high.
Tonight..Becoming cloudy this evening with 40 percent chance of
showers late this evening and after midnight. Showers beginning
overnight. Amount 5 to 10 mm. Wind becoming southeast 20 km/h
gusting to 40 after midnight. Low plus 5.
Wednesday..Showers ending near noon then cloudy with 60 percent
chance of showers. Risk of a thunderstorm in the afternoon. Amount 5
to 10 mm. Wind southeast 20 km/h gusting to 40 becoming southwest 20
in the afternoon. High 15. UV index 4 or moderate.

Belleville - Quinte West - Eastern Northumberland County.
Today..Sunny. High 13. UV index 6 or high.
Tonight..Becoming cloudy this evening with 40 percent chance of
showers late this evening and after midnight. Showers beginning
overnight. Amount 5 to 10 mm. Wind becoming southeast 20 km/h
gusting to 40 after midnight. Low plus 5.
Wednesday..Showers ending near noon then cloudy with 60 percent
chance of showers. Risk of a thunderstorm in the afternoon. Amount 5
to 10 mm. Wind southeast 20 km/h gusting to 40 becoming southwest 20
in the afternoon. High 15. UV index 4 or moderate.

Picton - Sandbanks Park.
Today..Sunny. High 12. UV index 6 or high.
Tonight..Becoming cloudy this evening with 40 percent chance of
showers late this evening and after midnight. Showers beginning
overnight. Amount 5 to 10 mm. Wind becoming southeast 20 km/h
gusting to 40 after midnight. Low plus 5.
Wednesday..Showers ending near noon then cloudy with 60 percent
chance of showers. Risk of a thunderstorm in the afternoon. Amount 5
to 10 mm. Wind southeast 20 km/h gusting to 40 becoming southwest 20
in the afternoon. High 14. UV index 4 or moderate.

Napanee - Consecon.
Today..Sunny. High 13. UV index 6 or high.
Tonight..Becoming cloudy this evening with 40 percent chance of
showers late this evening and after midnight. Showers beginning
overnight. Amount 5 to 10 mm. Wind becoming southeast 20 km/h
gusting to 40 after midnight. Low plus 5.
Wednesday..Showers ending near noon then cloudy with 60 percent
chance of showers. Risk of a thunderstorm in the afternoon. Amount 5
to 10 mm. Wind southeast 20 km/h gusting to 40 becoming southwest 20
in the afternoon. High 15. UV index 4 or moderate.

Kingston - Odessa - Frontenac Islands.
Today..Mainly sunny. High 12. UV index 6 or high.
Tonight..Becoming cloudy this evening with 40 percent chance of
showers late this evening and overnight. Showers beginning before
morning. Wind becoming southeast 20 km/h gusting to 40 before
morning. Low plus 5.
Wednesday..Showers ending in the afternoon then cloudy with
60 percent chance of showers. Risk of a thunderstorm in the
afternoon. Amount 10 to 15 mm. Wind southeast 20 km/h gusting to 40.
High 14. UV index 3 or moderate.

Lindsay - Southern Kawartha Lakes.
Today..Sunny. Becoming a mix of sun and cloud this afternoon. Wind up
to 15 km/h. High 13. Wind chill minus 4 this morning. UV index 6 or
high.
Tonight..Cloudy with 40 percent chance of showers late this evening
and after midnight. Showers beginning overnight. Amount 5 to 10 mm.
Wind becoming southeast 20 km/h gusting to 40 after midnight. Low
plus 5.
Wednesday..Showers ending near noon then cloudy with 60 percent
chance of showers. Risk of a thunderstorm in the afternoon. Amount 5
to 10 mm. Wind southeast 20 km/h gusting to 40 becoming light in the
morning. Wind becoming west 20 gusting to 40 in the afternoon.
High 15. UV index 4 or moderate.

Fenelon Falls - Balsam Lake Park - Northern Kawartha Lakes.
Today..Sunny. Becoming a mix of sun and cloud this afternoon. Wind up
to 15 km/h. High 13. Wind chill minus 4 this morning. UV index 6 or
high.
Tonight..Cloudy with 40 percent chance of showers late this evening
and after midnight. Showers beginning overnight. Amount 5 to 10 mm.
Wind becoming southeast 20 km/h gusting to 40 after midnight. Low
plus 5.
Wednesday..Showers ending near noon then cloudy with 60 percent
chance of showers. Risk of a thunderstorm in the afternoon. Amount 5
to 10 mm. Wind southeast 20 km/h gusting to 40 becoming light in the
morning. Wind becoming west 20 gusting to 40 in the afternoon.
High 12. UV index 4 or moderate.

Peterborough City - Lakefield - Southern Peterborough County.
Today..Sunny. Becoming a mix of sun and cloud this afternoon.
High 13. UV index 6 or high.
Tonight..Cloudy with 40 percent chance of showers late this evening
and after midnight. Showers beginning overnight. Amount 5 to 10 mm.
Wind becoming southeast 20 km/h after midnight. Low plus 5.
Wednesday..Showers ending near noon then cloudy with 60 percent
chance of showers. Risk of a thunderstorm in the afternoon. Amount 5
to 10 mm. Wind southeast 20 km/h becoming light in the morning. Wind
becoming northwest 20 gusting to 40 in the afternoon. High 15. UV
index 4 or moderate.

Apsley - Woodview - Northern Peterborough County.
Today..Sunny. Wind up to 15 km/h. High 13. Wind chill minus 5 this
morning. UV index 6 or high.
Tonight..Cloudy with 40 percent chance of showers late this evening
and after midnight. Showers beginning overnight. Amount 5 to 10 mm.
Wind becoming southeast 20 km/h gusting to 40 after midnight. Low
plus 5.
Wednesday..Showers ending near noon then cloudy with 60 percent
chance of showers. Risk of a thunderstorm in the afternoon. Amount 5
to 10 mm. Wind southeast 20 km/h gusting to 40 becoming light late
in the morning. Wind becoming west 20 in the afternoon. High 12. UV
index 4 or moderate.

Stirling - Tweed - Madoc.
Today..Mainly sunny. High 14. UV index 6 or high.
Tonight..Cloudy with 40 percent chance of showers late this evening
and after midnight. Showers beginning overnight. Amount 5 to 10 mm.
Wind becoming southeast 20 km/h gusting to 40 before morning. Low
plus 5.
Wednesday..Showers ending near noon then cloudy with 60 percent
chance of showers. Risk of a thunderstorm in the afternoon. Amount 5
to 10 mm. Wind southeast 20 km/h gusting to 40 becoming light late
in the morning. Wind becoming south 20 in the afternoon. High 14. UV
index 3 or moderate.

Tamworth - Sydenham - South Frontenac.
Today..Sunny. Becoming a mix of sun and cloud near noon. High 14. UV
index 6 or high.
Tonight..Becoming cloudy this evening with 40 percent chance of
showers late this evening and overnight. Showers beginning before
morning. Wind becoming southeast 20 km/h before morning. Low plus 5. Wednesday..Showers ending in the afternoon then cloudy with
60 percent chance of showers. Risk of a thunderstorm in the
afternoon. Amount 10 to 15 mm. Wind south 20 km/h. High 14. UV
index 3 or moderate.

Continued in next message...

--- up 3 days, 19 hours, 21 minutes
* Origin: Northern Realms (618:400/23)

FPCN11 CWTO 181930
Forecasts for Southern Ontario and the National Capital Region issued
by Environment Canada at 3:30 p.m. EDT Monday 18 May 2026 for tonight
Tuesday and Tuesday night.
The next scheduled forecast will be issued at 5:00 a.m. EDT Tuesday.

City of Toronto.
Tonight..Clear. Increasing cloudiness this evening then 40 percent
chance of showers late this evening and overnight. Risk of a
thunderstorm late this evening. Fog patches developing overnight.
Wind southwest 30 km/h gusting to 50 becoming light overnight.
Low 18.
Tuesday..Mainly cloudy. 30 percent chance of showers late in the
morning and in the afternoon. Risk of a thunderstorm late in the
afternoon. Fog patches dissipating in the morning. Wind becoming
west 30 km/h gusting to 50 in the morning. High 29. Humidex 34. UV
index 9 or very high.
Tuesday night..Mainly cloudy with 60 percent chance of showers. Risk
of a thunderstorm in the evening. Wind southwest 20 km/h gusting to
40 becoming light late in the evening. Wind becoming northwest 20
gusting to 40 overnight. Low 10.

Windsor - Leamington - Essex County.
Tonight..Partly cloudy with 60 percent chance of showers. Risk of a
thunderstorm this evening. Wind southwest 40 km/h gusting to 60
diminishing to 20 gusting to 40 this evening then becoming light
late this evening. Low 20.
Tuesday..Becoming cloudy in the morning with 30 percent chance of
showers late in the morning and early afternoon. Showers beginning
in the afternoon. Risk of a thunderstorm late in the afternoon. Wind
becoming southwest 20 km/h gusting to 40 then increasing to 40
gusting to 60 late in the morning. High 30. Humidex 38. UV index 6
or high.
Tuesday night..Showers ending near midnight then cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening.
Wind southwest 20 km/h gusting to 40 becoming light near midnight.
Wind becoming north 20 gusting to 40 after midnight. Low 12.

Chatham-Kent - Rondeau Park.
Tonight..Mainly cloudy with 60 percent chance of showers. Risk of a
thunderstorm this evening. Wind southwest 40 km/h gusting to 60
diminishing to 20 gusting to 40 this evening then becoming light
late this evening. Low 19.
Tuesday..Becoming cloudy in the morning with 30 percent chance of
showers late in the morning and early afternoon. Showers beginning
in the afternoon. Risk of a thunderstorm late in the afternoon. Wind
becoming southwest 20 km/h gusting to 40 then increasing to 40
gusting to 60 late in the morning. High 30. Humidex 38. UV index 6
or high.
Tuesday night..Showers ending near midnight then cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening.
Wind southwest 20 km/h gusting to 40 becoming light near midnight.
Wind becoming north 20 gusting to 40 after midnight. Low 9.

Sarnia - Petrolia - Western Lambton County.
Tonight..Mainly cloudy with 60 percent chance of showers. Risk of a
thunderstorm this evening. Wind southwest 40 km/h gusting to 60
diminishing to 20 gusting to 40 this evening then becoming light
late this evening. Low 18.
Tuesday..Mainly cloudy with 30 percent chance of showers late in the
morning and early afternoon. Showers beginning in the afternoon.
Risk of a thunderstorm late in the afternoon. Wind becoming south
20 km/h gusting to 40 then southwest 40 gusting to 60 late in the
morning. High 30. Humidex 36. UV index 6 or high.
Tuesday night..Showers ending near midnight then cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening.
Wind southwest 20 km/h gusting to 40 becoming light near midnight.
Wind becoming north 20 gusting to 40 after midnight. Low 9.

Watford - Pinery Park - Eastern Lambton County.
Tonight..Partly cloudy with 60 percent chance of showers. Risk of a
thunderstorm this evening. Wind southwest 40 km/h gusting to 60
diminishing to 20 gusting to 40 this evening then becoming light
late this evening. Low 19.
Tuesday..Becoming cloudy in the morning with 30 percent chance of
showers late in the morning and early afternoon. Showers beginning
in the afternoon. Risk of a thunderstorm late in the afternoon. Wind
becoming south 20 km/h gusting to 40 then southwest 40 gusting to 60
late in the morning. High 30. Humidex 38. UV index 6 or high.
Tuesday night..Showers ending near midnight then cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening.
Wind southwest 20 km/h gusting to 40 becoming light near midnight.
Wind becoming north 20 gusting to 40 after midnight. Low 8.

Rodney - Shedden - Western Elgin County.
Tonight..Mainly cloudy with 60 percent chance of showers. Risk of a
thunderstorm this evening. Wind southwest 40 km/h gusting to 60
diminishing to 20 gusting to 40 this evening then becoming light
late this evening. Low 18.
Tuesday..Becoming cloudy in the morning with 30 percent chance of
showers late in the morning and early afternoon. Showers beginning
in the afternoon. Risk of a thunderstorm late in the afternoon. Wind
becoming south 20 km/h gusting to 40 then southwest 40 gusting to 60
late in the morning. High 29. Humidex 37. UV index 6 or high.
Tuesday night..Showers ending near midnight then cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening.
Wind southwest 20 km/h gusting to 40 becoming light near midnight.
Wind becoming north 20 gusting to 40 after midnight. Low 8.

St. Thomas - Aylmer - Eastern Elgin County.
Tonight..Mainly cloudy with 60 percent chance of showers. Risk of a
thunderstorm this evening. Wind southwest 40 km/h gusting to 60
diminishing to 20 gusting to 40 this evening then becoming light
late this evening. Low 18.
Tuesday..Mainly cloudy with 30 percent chance of showers late in the
morning and early afternoon. Showers beginning in the afternoon.
Risk of a thunderstorm late in the afternoon. Wind becoming south
20 km/h gusting to 40 then southwest 40 gusting to 60 late in the
morning. High 29. Humidex 37. UV index 9 or very high.
Tuesday night..Showers ending near midnight then cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening.
Wind southwest 20 km/h gusting to 40 becoming light near midnight.
Wind becoming north 20 gusting to 40 after midnight. Low 8.

Strathroy - Komoka - Western Middlesex County.
Tonight..Mainly cloudy with 60 percent chance of showers. Risk of a
thunderstorm this evening. Wind southwest 40 km/h gusting to 60
diminishing to 20 gusting to 40 this evening then becoming light
late this evening. Low 19.
Tuesday..Becoming cloudy in the morning with 30 percent chance of
showers late in the morning and early afternoon. Showers beginning
in the afternoon. Risk of a thunderstorm late in the afternoon. Wind
becoming south 20 km/h gusting to 40 then southwest 40 gusting to 60
late in the morning. High 30. Humidex 38. UV index 6 or high.
Tuesday night..Showers ending near midnight then cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening.
Wind southwest 20 km/h gusting to 40 becoming light near midnight.
Wind becoming north 20 gusting to 40 after midnight. Low 8.

London - Parkhill - Eastern Middlesex County.
Tonight..Mainly cloudy with 60 percent chance of showers. Risk of a
thunderstorm this evening. Wind southwest 40 km/h gusting to 60
diminishing to 20 gusting to 40 this evening then becoming light
late this evening. Low 19.
Tuesday..Mainly cloudy with 30 percent chance of showers late in the
morning and early afternoon. Showers beginning in the afternoon.
Risk of a thunderstorm late in the afternoon. Wind becoming south
20 km/h gusting to 40 then southwest 40 gusting to 60 late in the
morning. High 30. Humidex 37. UV index 9 or very high.
Tuesday night..Showers ending near midnight then cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening.
Wind southwest 20 km/h gusting to 40 becoming light near midnight.
Wind becoming north 20 gusting to 40 after midnight. Low 7.

Simcoe - Delhi - Norfolk.
Tonight..Increasing cloudiness early this evening. 40 percent chance
of showers late this evening and overnight. Risk of a thunderstorm
late this evening. Wind southwest 30 km/h gusting to 50 becoming
light after midnight. Low 18.
Tuesday..Mainly cloudy with 30 percent chance of showers late in the
morning and in the afternoon. Showers beginning late in the
afternoon. Risk of a thunderstorm late in the afternoon. Wind
becoming southwest 20 km/h gusting to 40 then increasing to 40
gusting to 70 late in the morning. High 29. Humidex 34. UV index 9
or very high.
Tuesday night..Showers ending after midnight then cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening
and after midnight. Wind southwest 40 km/h gusting to 70 diminishing
to 20 gusting to 40 in the evening then becoming northwest 20
gusting to 40 after midnight. Low 9.

Dunnville - Caledonia - Haldimand.
Tonight..Increasing cloudiness. 40 percent chance of showers late
this evening and overnight. Risk of a thunderstorm late this
evening. Wind southwest 30 km/h gusting to 50 becoming light after
midnight. Low 18.
Tuesday..A mix of sun and cloud with 30 percent chance of showers
late in the morning and in the afternoon. Showers beginning late in
the afternoon. Risk of a thunderstorm late in the afternoon. Wind
becoming southwest 20 km/h gusting to 40 then increasing to 40
gusting to 70 late in the morning. High 29. Humidex 35. UV index 9
or very high.
Tuesday night..Showers ending after midnight then cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening
and after midnight. Wind southwest 40 km/h gusting to 70 diminishing
to 20 gusting to 40 in the evening then becoming northwest 20
gusting to 40 after midnight. Low 10.

Woodstock - Tillsonburg - Oxford County.
Tonight..Increasing cloudiness early this evening. 40 percent chance
of showers late this evening and overnight. Risk of a thunderstorm
late this evening. Wind southwest 30 km/h gusting to 50 becoming
light after midnight. Low 19.
Tuesday..Mainly cloudy with 30 percent chance of showers late in the
morning and in the afternoon. Showers beginning late in the
afternoon. Risk of a thunderstorm late in the afternoon. Wind
becoming southwest 20 km/h gusting to 40 then increasing to 40
gusting to 70 late in the morning. High 30. Humidex 36. UV index 9
or very high.
Tuesday night..Showers ending after midnight then cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening
and after midnight. Wind southwest 40 km/h gusting to 70 diminishing
to 20 gusting to 40 in the evening then becoming northwest 20
gusting to 40 after midnight. Low 7.

Brantford - County of Brant.
Tonight..Increasing cloudiness. 40 percent chance of showers late
this evening and overnight. Risk of a thunderstorm late this
evening. Wind southwest 30 km/h gusting to 50 becoming light after
midnight. Low 18.
Tuesday..Mainly cloudy with 30 percent chance of showers late in the
morning and in the afternoon. Showers beginning late in the
afternoon. Risk of a thunderstorm late in the afternoon. Wind
becoming southwest 20 km/h gusting to 40 then increasing to 40
gusting to 70 late in the morning. High 30. Humidex 36. UV index 9
or very high.
Tuesday night..Showers ending after midnight then cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening
and after midnight. Wind southwest 40 km/h gusting to 70 diminishing
to 20 gusting to 40 in the evening then becoming northwest 20
gusting to 40 after midnight. Low 7.

Niagara Falls - Welland - Southern Niagara Region.
Tonight..Clear. Increasing cloudiness early this evening then
40 percent chance of showers late this evening and overnight. Risk
of a thunderstorm late this evening. Wind southwest 30 km/h gusting
to 50 becoming light after midnight. Low 18.
Tuesday..A mix of sun and cloud with 30 percent chance of showers
late in the morning and in the afternoon. Showers beginning late in
the afternoon. Risk of a thunderstorm late in the afternoon. Wind
becoming southwest 20 km/h gusting to 40 then increasing to 40
gusting to 70 late in the morning. High 29. Humidex 36. UV index 9
or very high.
Tuesday night..Showers ending after midnight then mainly cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening
and after midnight. Wind southwest 40 km/h gusting to 70 diminishing
to 20 gusting to 40 in the evening then becoming northwest 20
gusting to 40 after midnight. Low 10.

St. Catharines - Grimsby - Northern Niagara Region.
Tonight..Clear. Increasing cloudiness early this evening then
40 percent chance of showers late this evening and overnight. Risk
of a thunderstorm late this evening. Wind southwest 30 km/h gusting
to 50 becoming light after midnight. Low 18.
Tuesday..A mix of sun and cloud with 30 percent chance of showers
late in the morning and in the afternoon. Showers beginning late in
the afternoon. Risk of a thunderstorm late in the afternoon. Wind
becoming southwest 20 km/h gusting to 40 then increasing to 40
gusting to 70 late in the morning. High 30. Humidex 37. UV index 9
or very high.
Tuesday night..Showers ending after midnight then mainly cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening
and after midnight. Wind southwest 40 km/h gusting to 70 diminishing
to 20 gusting to 40 in the evening then becoming northwest 20
gusting to 40 after midnight. Low 13.

City of Hamilton.
Tonight..Increasing cloudiness. 40 percent chance of showers late
this evening and overnight. Risk of a thunderstorm late this
evening. Wind southwest 30 km/h gusting to 50 becoming light after
midnight. Low 18.
Tuesday..A mix of sun and cloud with 30 percent chance of showers
late in the morning and in the afternoon. Showers beginning late in
the afternoon. Risk of a thunderstorm late in the afternoon. Wind
becoming southwest 20 km/h gusting to 40 then increasing to 40
gusting to 70 late in the morning. High 30. Humidex 35. UV index 9
or very high.
Tuesday night..Showers ending after midnight then mainly cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening
and after midnight. Wind southwest 40 km/h gusting to 70 diminishing
to 20 gusting to 40 in the evening then becoming northwest 20
gusting to 40 after midnight. Low 10.

Burlington - Oakville.
Tonight..Clear. Increasing cloudiness early this evening then
40 percent chance of showers late this evening and overnight. Risk
of a thunderstorm late this evening. Fog patches developing
overnight. Wind southwest 30 km/h gusting to 50 becoming light
overnight. Low 19.
Tuesday..A mix of sun and cloud. 30 percent chance of showers late in
the morning and in the afternoon. Risk of a thunderstorm late in the
afternoon. Fog patches dissipating in the morning. Wind becoming
west 30 km/h gusting to 50 in the morning. High 29. Humidex 34. UV
index 9 or very high.
Tuesday night..Mainly cloudy with 60 percent chance of showers. Risk
of a thunderstorm in the evening. Wind southwest 20 km/h gusting to
40 becoming light late in the evening. Wind becoming northwest 20
gusting to 40 overnight. Low 11.

Halton Hills - Milton.
Tonight..Increasing cloudiness. 40 percent chance of showers late
this evening and overnight. Risk of a thunderstorm late this
evening. Fog patches developing overnight. Wind southwest 30 km/h
gusting to 50 becoming light overnight. Low 18.
Tuesday..Mainly cloudy. 30 percent chance of showers late in the
morning and in the afternoon. Risk of a thunderstorm late in the
afternoon. Fog patches dissipating in the morning. Wind becoming
west 30 km/h gusting to 50 in the morning. High 30. Humidex 35. UV
index 8 or very high.
Tuesday night..Mainly cloudy with 60 percent chance of showers. Risk
of a thunderstorm in the evening. Wind southwest 20 km/h gusting to
40 becoming light late in the evening. Wind becoming northwest 20
gusting to 40 overnight. Low 9.

Mississauga - Brampton.
Tonight..Clear. Increasing cloudiness early this evening then
40 percent chance of showers late this evening and overnight. Risk
of a thunderstorm late this evening. Fog patches developing
overnight. Wind southwest 30 km/h gusting to 50 becoming light
overnight. Low 19.
Tuesday..Mainly cloudy. 30 percent chance of showers late in the
morning and in the afternoon. Risk of a thunderstorm late in the
afternoon. Fog patches dissipating in the morning. Wind becoming
west 30 km/h gusting to 50 in the morning. High 30. Humidex 35. UV
index 9 or very high.
Tuesday night..Mainly cloudy with 60 percent chance of showers. Risk
of a thunderstorm in the evening. Wind southwest 20 km/h gusting to
40 becoming light late in the evening. Wind becoming northwest 20
gusting to 40 overnight. Low 9.

Caledon.
Tonight..Increasing cloudiness. Showers beginning early this evening
and ending after midnight then 40 percent chance of showers
overnight. Risk of a thunderstorm this evening and after midnight.
Fog patches developing overnight. Wind southwest 30 km/h gusting to
50 becoming light after midnight. Low 18.
Tuesday..Cloudy with 40 percent chance of showers. Showers beginning
late in the afternoon. Risk of a thunderstorm. Fog patches
dissipating in the morning. Wind becoming south 20 km/h gusting to
40 in the morning then southwest 40 gusting to 60 near noon.
High 29. Humidex 36. UV index 8 or very high.
Tuesday night..Showers ending after midnight then mainly cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening
and after midnight. Wind southwest 40 km/h gusting to 60 diminishing
to 20 gusting to 40 in the evening then becoming northwest 20
gusting to 40 after midnight. Low 8.

Vaughan - Richmond Hill - Markham.
Tonight..Clear. Increasing cloudiness this evening then 40 percent
chance of showers late this evening and overnight. Risk of a
thunderstorm late this evening. Fog patches developing overnight.
Wind southwest 30 km/h gusting to 50 becoming light overnight.
Low 19.
Tuesday..Mainly cloudy. 30 percent chance of showers late in the
morning and in the afternoon. Risk of a thunderstorm late in the
afternoon. Fog patches dissipating in the morning. Wind becoming
west 30 km/h gusting to 50 in the morning. High 30. Humidex 36. UV
index 9 or very high.
Tuesday night..Mainly cloudy with 60 percent chance of showers. Risk
of a thunderstorm in the evening. Wind southwest 20 km/h gusting to
40 becoming light late in the evening. Wind becoming northwest 20
gusting to 40 overnight. Low 8.

Newmarket - Georgina - Northern York Region.
Tonight..Becoming cloudy this evening with showers changing to
40 percent chance of showers after midnight. Risk of a thunderstorm
this evening and after midnight. Fog patches developing overnight.
Wind southwest 30 km/h gusting to 50 becoming light after midnight.
Low 18.
Tuesday..Cloudy with 40 percent chance of showers. Showers beginning
late in the afternoon. Risk of a thunderstorm. Fog patches
dissipating in the morning. Wind becoming south 20 km/h gusting to
40 in the morning then southwest 40 gusting to 60 near noon.
High 29. Humidex 35. UV index 8 or very high.
Tuesday night..Showers ending after midnight then mainly cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening
and after midnight. Wind southwest 40 km/h gusting to 60 diminishing
to 20 gusting to 40 in the evening then becoming northwest 20
gusting to 40 after midnight. Low 8.

Pickering - Oshawa - Southern Durham Region.
Tonight..Clear. Increasing cloudiness this evening then 40 percent
chance of showers late this evening and overnight. Risk of a
thunderstorm late this evening and after midnight. Fog patches
developing overnight. Wind southwest 20 km/h gusting to 40 becoming
light late this evening. Wind becoming southwest 20 gusting to 40
before morning. Low 16.
Tuesday..Mainly cloudy. 60 percent chance of showers late in the
morning and in the afternoon. Risk of a thunderstorm late in the
afternoon. Fog patches dissipating in the morning. Wind west 30 km/h
gusting to 50. High 27. Humidex 32. UV index 9 or very high.
Tuesday night..Mainly cloudy with 60 percent chance of showers. Risk
of a thunderstorm in the evening. Wind west 30 km/h gusting to 50
becoming light near midnight. Wind becoming north 20 gusting to 40
after midnight. Low 10.

Uxbridge - Beaverton - Northern Durham Region.
Tonight..Clear. Increasing cloudiness this evening then 40 percent
chance of showers late this evening and overnight. Risk of a
thunderstorm late this evening and after midnight. Fog patches
developing overnight. Wind southwest 20 km/h gusting to 40 becoming
light late this evening. Low 17.
Tuesday..Cloudy with 60 percent chance of showers. Risk of a
thunderstorm late in the afternoon. Fog patches dissipating in the
morning. Wind becoming southwest 20 km/h gusting to 40 in the
morning. High 28. Humidex 33. UV index 8 or very high.
Tuesday night..Mainly cloudy with 60 percent chance of showers. Risk
of a thunderstorm in the evening. Wind southwest 20 km/h gusting to
40 becoming light in the evening. Wind becoming north 20 gusting to
40 after midnight. Low 7.

Goderich - Bluewater - Southern Huron County.
Tonight..Becoming cloudy this evening with 60 percent chance of
showers this evening and overnight. Risk of a thunderstorm this
evening. Fog patches developing overnight. Wind southwest 40 km/h
gusting to 60 diminishing to 20 gusting to 40 this evening then
becoming light after midnight. Low 19.
Tuesday..Cloudy with 30 percent chance of showers late in the morning
and early afternoon. Showers beginning in the afternoon. Risk of a
thunderstorm late in the afternoon. Fog patches dissipating in the
morning. Wind becoming southwest 20 km/h gusting to 40 then
increasing to 40 gusting to 60 late in the morning. High 28. Humidex
36. UV index 6 or high.
Tuesday night..Showers ending after midnight then cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening.
Wind west 20 km/h gusting to 40 becoming light in the evening. Wind
becoming northwest 20 gusting to 40 after midnight. Low plus 5.

Wingham - Blyth - Northern Huron County.
Tonight..Becoming cloudy this evening with 60 percent chance of
showers this evening and overnight. Risk of a thunderstorm this
evening. Fog patches developing overnight. Wind southwest 40 km/h
gusting to 60 diminishing to 20 gusting to 40 this evening then
becoming light after midnight. Low 18.
Tuesday..Cloudy with 30 percent chance of showers late in the morning
and early afternoon. Showers beginning in the afternoon. Risk of a
thunderstorm late in the afternoon. Fog patches dissipating in the
morning. Wind becoming southwest 20 km/h gusting to 40 then
increasing to 40 gusting to 60 late in the morning. High 28. Humidex
36. UV index 6 or high.
Tuesday night..Showers ending after midnight then cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening.
Wind west 20 km/h gusting to 40 becoming light in the evening. Wind
becoming northwest 20 gusting to 40 after midnight. Low plus 5.

Stratford - Mitchell - Southern Perth County.
Tonight..Increasing cloudiness early this evening. 60 percent chance
of showers. Risk of a thunderstorm this evening. Fog patches
developing overnight. Wind southwest 40 km/h gusting to 60
diminishing to 20 gusting to 40 this evening then becoming light
after midnight. Low 19.
Tuesday..Mainly cloudy with 30 percent chance of showers late in the
morning and early afternoon. Showers beginning in the afternoon.
Risk of a thunderstorm late in the afternoon. Fog patches
dissipating in the morning. Wind becoming southwest 20 km/h gusting
to 40 then increasing to 40 gusting to 60 late in the morning.
High 30. Humidex 38. UV index 8 or very high.
Tuesday night..Showers ending after midnight then cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening.
Wind west 20 km/h gusting to 40 becoming light in the evening. Wind
becoming northwest 20 gusting to 40 after midnight. Low plus 5.

Listowel - Milverton - Northern Perth County.
Tonight..Becoming cloudy this evening with 60 percent chance of
showers this evening and overnight. Risk of a thunderstorm this
evening. Fog patches developing overnight. Wind southwest 40 km/h
gusting to 60 diminishing to 20 gusting to 40 this evening then
becoming light after midnight. Low 18.
Tuesday..Cloudy with 30 percent chance of showers late in the morning
and early afternoon. Showers beginning in the afternoon. Risk of a
thunderstorm late in the afternoon. Fog patches dissipating in the
morning. Wind becoming southwest 20 km/h gusting to 40 then
increasing to 40 gusting to 60 late in the morning. High 27. Humidex
34. UV index 6 or high.
Tuesday night..Showers ending after midnight then cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening.
Wind west 20 km/h gusting to 40 becoming light in the evening. Wind
becoming northwest 20 gusting to 40 after midnight. Low plus 5.

Kitchener - Cambridge - Region of Waterloo.
Tonight..Increasing cloudiness early this evening. 60 percent chance
of showers. Risk of a thunderstorm this evening. Fog patches
developing overnight. Wind southwest 40 km/h gusting to 60
diminishing to 20 gusting to 40 this evening then becoming light
after midnight. Low 18.
Tuesday..Mainly cloudy with 30 percent chance of showers late in the
morning and early afternoon. Showers beginning in the afternoon.
Risk of a thunderstorm late in the afternoon. Fog patches
dissipating in the morning. Wind becoming southwest 20 km/h gusting
to 40 then increasing to 40 gusting to 60 late in the morning.
High 29. Humidex 34. UV index 8 or very high.
Tuesday night..Showers ending after midnight then cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening.
Wind west 20 km/h gusting to 40 becoming light in the evening. Wind
becoming northwest 20 gusting to 40 after midnight. Low 6.

Guelph - Erin - Southern Wellington County.
Tonight..Increasing cloudiness early this evening. 60 percent chance
of showers. Risk of a thunderstorm this evening. Fog patches
developing overnight. Wind southwest 40 km/h gusting to 60
diminishing to 20 gusting to 40 this evening then becoming light
after midnight. Low 18.
Tuesday..Mainly cloudy with 30 percent chance of showers late in the
morning and early afternoon. Showers beginning in the afternoon.
Risk of a thunderstorm late in the afternoon. Fog patches
dissipating in the morning. Wind becoming southwest 20 km/h gusting
to 40 then increasing to 40 gusting to 60 late in the morning.
High 28. Humidex 33. UV index 8 or very high.
Tuesday night..Showers ending after midnight then cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening.
Wind west 20 km/h gusting to 40 becoming light in the evening. Wind
becoming northwest 20 gusting to 40 after midnight. Low 6.

Mount Forest - Arthur - Northern Wellington County.
Tonight..Increasing cloudiness early this evening. 60 percent chance
of showers. Risk of a thunderstorm this evening. Fog patches
developing overnight. Wind southwest 40 km/h gusting to 60
diminishing to 20 gusting to 40 this evening then becoming light
after midnight. Low 17.
Tuesday..Cloudy with 30 percent chance of showers late in the morning
and early afternoon. Showers beginning in the afternoon. Risk of a
thunderstorm late in the afternoon. Fog patches dissipating in the
morning. Wind becoming southwest 20 km/h gusting to 40 then
increasing to 40 gusting to 60 late in the morning. High 26. Humidex
33. UV index 6 or high.
Tuesday night..Showers ending after midnight then mainly cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening.
Wind west 20 km/h gusting to 40 becoming light in the evening. Wind
becoming northwest 20 gusting to 40 after midnight. Low plus 4.

Orangeville - Grand Valley - Southern Dufferin County.
Tonight..Increasing cloudiness. Showers beginning early this evening
and ending after midnight then 40 percent chance of showers
overnight. Risk of a thunderstorm this evening and after midnight.
Fog patches developing overnight. Wind southwest 30 km/h gusting to
50 becoming light after midnight. Low 18.
Tuesday..Cloudy with 40 percent chance of showers. Showers beginning
late in the afternoon. Risk of a thunderstorm. Fog patches
dissipating in the morning. Wind becoming south 20 km/h gusting to
40 in the morning then southwest 40 gusting to 60 near noon.
High 27. Humidex 35. UV index 6 or high.
Tuesday night..Showers ending after midnight then mainly cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening
and after midnight. Wind southwest 40 km/h gusting to 60 diminishing
to 20 gusting to 40 in the evening then becoming northwest 20
gusting to 40 after midnight. Low plus 5.

Shelburne - Mansfield - Northern Dufferin County.
Tonight..Increasing cloudiness. Showers beginning early this evening
and ending after midnight then 40 percent chance of showers
overnight. Risk of a thunderstorm this evening and after midnight.
Fog patches developing overnight. Wind southwest 30 km/h gusting to
50 becoming light after midnight. Low 18.
Tuesday..Cloudy with 40 percent chance of showers. Showers beginning
late in the afternoon. Risk of a thunderstorm. Fog patches
dissipating in the morning. Wind becoming south 20 km/h gusting to
40 in the morning then southwest 40 gusting to 60 near noon.
High 27. Humidex 35. UV index 6 or high.
Tuesday night..Showers ending after midnight then mainly cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening
and after midnight. Wind southwest 40 km/h gusting to 60 diminishing
to 20 gusting to 40 in the evening then becoming northwest 20
gusting to 40 after midnight. Low plus 5.

Innisfil - New Tecumseth - Angus.
Tonight..Becoming cloudy this evening with showers changing to
40 percent chance of showers after midnight. Risk of a thunderstorm
this evening and after midnight. Fog patches developing overnight.
Wind southwest 30 km/h gusting to 50 becoming light after midnight.
Low 17.
Tuesday..Cloudy with 40 percent chance of showers. Showers beginning
late in the afternoon. Risk of a thunderstorm. Fog patches
dissipating in the morning. Wind becoming south 20 km/h gusting to
40 in the morning then southwest 40 gusting to 60 near noon.
High 28. Humidex 36. UV index 6 or high.
Tuesday night..Showers ending after midnight then cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening
and after midnight. Wind southwest 40 km/h gusting to 60 diminishing
to 20 gusting to 40 in the evening then becoming northwest 20
gusting to 40 after midnight. Low plus 5.

Saugeen Shores - Kincardine - Southern Bruce County.
Tonight..Becoming cloudy this evening with showers changing to
40 percent chance of showers near midnight. Risk of a thunderstorm
this evening. Amount 10 to 15 mm. Fog patches developing overnight.
Wind southwest 30 km/h gusting to 50 becoming light late this
evening. Low 16.
Tuesday..Mainly cloudy with 30 percent chance of showers in the
morning and early in the afternoon. Showers beginning in the
afternoon. Risk of a thunderstorm late in the afternoon. Fog patches
dissipating in the morning. Wind becoming southwest 20 km/h gusting
to 40 then increasing to 40 gusting to 60 late in the morning.
High 26. Humidex 31. UV index 8 or very high.
Tuesday night..Showers ending near midnight then cloudy with
40 percent chance of showers. Risk of a thunderstorm in the evening.
Wind southwest 40 km/h gusting to 60 becoming west 20 gusting to 40
in the evening then becoming north 20 gusting to 40 near midnight.
Low plus 4.

Continued in next message...

--- up 3 days, 7 hours, 57 minutes
* Origin: Northern Realms (618:400/23)