Forecasts for Southern Ontario and the National Capital Region

Choose a Province or Territory

* NOTE: Corrected and/or amended bulletins are listed first *

 
FPCN11 CWTO 291500
Forecasts for Southern Ontario and the National Capital Region issued
by Environment Canada at 11:00 a.m. EDT Tuesday 29 September 2020 for
today and Wednesday.
The next scheduled forecast will be issued at 3:30 p.m. EDT.

City of Toronto
Burlington - Oakville
Mississauga - Brampton
Vaughan - Richmond Hill - Markham.
Today..A mix of sun and cloud. Becoming cloudy this afternoon. Wind
 southwest 20 km/h. High 19. UV index 5 or moderate.
Tonight..Cloudy. 40 percent chance of showers late this evening and
 overnight. Low 12.
Wednesday..Cloudy. 60 percent chance of showers in the afternoon with
 risk of a thunderstorm. Wind becoming southwest 30 km/h gusting to
 50 in the morning. High 17. UV index 2 or low.

Windsor - Essex - Chatham-Kent.
Today..A mix of sun and cloud. Wind becoming southwest 20 km/h
 gusting to 40 this afternoon. High 17. UV index 5 or moderate.
Tonight..Mainly cloudy. 30 percent chance of showers overnight. Wind
 southwest 20 km/h gusting to 40 becoming light early this evening.
 Low 10.
Wednesday..Mainly cloudy with 60 percent chance of showers. Risk of a
 thunderstorm in the afternoon. Wind southwest 20 km/h gusting to 40.
 High 17. UV index 3 or moderate.

Sarnia - Lambton.
Today..A mix of sun and cloud with 30 percent chance of showers. Wind
 southwest 20 km/h gusting to 40. High 17. UV index 5 or moderate.
Tonight..Mainly cloudy with 30 percent chance of showers. Wind
 southwest 20 km/h gusting to 40 becoming light this evening. Low 9.
Wednesday..Mainly cloudy with 60 percent chance of showers. Risk of a
 thunderstorm in the afternoon. Wind southwest 20 km/h gusting to 40.
 High 16. UV index 3 or moderate.

Elgin.
Today..A mix of sun and cloud. Becoming cloudy this afternoon. Wind
 southwest 20 km/h. High 16. UV index 4 or moderate.
Tonight..Mainly cloudy. 40 percent chance of showers overnight. Wind
 southwest 20 km/h becoming light this evening. Low 9.
Wednesday..Mainly cloudy. 40 percent chance of showers in the
 morning. A few showers beginning near noon. Risk of a thunderstorm
 in the afternoon. Wind southwest 30 km/h gusting to 50. High 16. UV
 index 4 or moderate.

London - Middlesex.
Today..Mainly cloudy. 30 percent chance of showers. Wind southwest
 20 km/h. High 16. UV index 4 or moderate.
Tonight..Mainly cloudy with 30 percent chance of showers. Wind
 southwest 20 km/h becoming light early this evening. Low 9.
Wednesday..Mainly cloudy with 60 percent chance of showers. Risk of a
 thunderstorm in the afternoon. Wind southwest 20 km/h gusting to 40.
 High 16. UV index 3 or moderate.

Simcoe - Delhi - Norfolk
Dunnville - Caledonia - Haldimand.
Today..A mix of sun and cloud. Becoming cloudy this afternoon. Wind
 southwest 20 km/h gusting to 40. High 16. UV index 4 or moderate.
Tonight..Cloudy. 60 percent chance of showers late this evening and
 overnight. Wind southwest 20 km/h gusting to 40 becoming light this
 evening. Low 10.
Wednesday..Cloudy. 40 percent chance of showers in the morning. A few
 showers beginning near noon. Risk of a thunderstorm in the
 afternoon. Wind southwest 20 km/h gusting to 40 increasing to 40
 gusting to 60 near noon. High 16. UV index 3 or moderate.

Oxford - Brant.
Today..A mix of sun and cloud. Becoming cloudy this afternoon. Wind
 southwest 20 km/h gusting to 40. High 17. UV index 5 or moderate.
Tonight..Cloudy. 30 percent chance of showers late this evening and
 overnight. Fog patches developing overnight. Wind southwest 20 km/h
 becoming light early this evening. Low 9.
Wednesday..Cloudy. 60 percent chance of showers late in the morning
 and in the afternoon. Risk of a thunderstorm in the afternoon. Fog
 patches dissipating in the morning. Wind becoming southwest 30 km/h
 gusting to 50 in the morning. High 15. UV index 3 or moderate.

Niagara Falls - Welland - Southern Niagara Region.
Today..Becoming cloudy near noon with 40 percent chance of showers
 this afternoon. Wind becoming southwest 20 km/h gusting to 40 this
 afternoon. High 17. UV index 4 or moderate.
Tonight..Periods of rain. Wind southwest 20 km/h becoming light this
 evening. Low 12.
Wednesday..Showers. Risk of a thunderstorm in the afternoon. Wind
 southwest 20 km/h increasing to 40 gusting to 60 in the morning.
 High 16. UV index 2 or low.

St. Catharines - Grimsby - Northern Niagara Region.
Today..Becoming cloudy near noon with 40 percent chance of showers
 this afternoon. Wind southwest 20 km/h. High 19. UV index 4 or
 moderate.
Tonight..Periods of rain. Wind southwest 20 km/h becoming light this
 evening. Low 11.
Wednesday..Cloudy with 70 percent chance of showers. Risk of a
 thunderstorm in the afternoon. Wind southwest 30 km/h gusting to 50.
 High 17. UV index 3 or moderate.

City of Hamilton.
Today..A mix of sun and cloud. Becoming cloudy this afternoon. Wind
 southwest 20 km/h. High 18. UV index 5 or moderate.
Tonight..Cloudy with 40 percent chance of showers. Wind southwest
 20 km/h becoming light early this evening. Low 10.
Wednesday..Cloudy. 60 percent chance of showers in the afternoon with
 risk of a thunderstorm. Wind becoming southwest 30 km/h gusting to
 50 in the morning. High 17. UV index 3 or moderate.

Halton Hills - Milton
Stratford - Mitchell - Southern Perth County
Listowel - Milverton - Northern Perth County
Kitchener - Cambridge - Region of Waterloo
Guelph - Erin - Southern Wellington County.
Today..Becoming cloudy this afternoon with 30 percent chance of
 showers later this afternoon. Wind southwest 20 km/h. High 17. UV
 index 4 or moderate.
Tonight..Mainly cloudy with 30 percent chance of showers. Fog patches
 developing overnight. Wind southwest 20 km/h becoming light early
 this evening. Low 9.
Wednesday..Cloudy with 60 percent chance of showers. Risk of a
 thunderstorm in the afternoon. Fog patches dissipating early in the
 morning. Wind becoming southwest 20 km/h gusting to 40 in the
 morning. High 15. UV index 2 or low.

Caledon
Newmarket - Georgina - Northern York Region
Innisfil - New Tecumseth - Angus.
Today..A mix of sun and cloud. Becoming cloudy this afternoon.
 High 18. UV index 5 or moderate.
Tonight..Cloudy. 40 percent chance of showers late this evening and
 overnight. Fog patches developing overnight. Low 9.
Wednesday..Cloudy. 60 percent chance of showers in the afternoon with
 risk of a thunderstorm. Fog patches dissipating early in the
 morning. Wind becoming southwest 20 km/h gusting to 40 in the
 morning. High 15. UV index 2 or low.

Pickering - Oshawa - Southern Durham Region
Uxbridge - Beaverton - Northern Durham Region.
Today..A mix of sun and cloud. Wind becoming southwest 20 km/h this
 afternoon. High 18. UV index 5 or moderate.
Tonight..Cloudy. 60 percent chance of showers late this evening and
 overnight. Fog patches developing overnight. Low 11.
Wednesday..Cloudy. 60 percent chance of showers in the afternoon with
 risk of a thunderstorm. Fog patches dissipating early in the
 morning. Wind becoming southwest 20 km/h gusting to 40 in the
 morning. High 16. UV index 2 or low.

Goderich - Bluewater - Southern Huron County
Wingham - Blyth - Northern Huron County.
Today..A mix of sun and cloud with 30 percent chance of showers. Wind
 southwest 20 km/h gusting to 40. High 16. UV index 5 or moderate.
Tonight..Mainly cloudy with 30 percent chance of showers. Wind
 southwest 20 km/h. Low 10.
Wednesday..Mainly cloudy with 60 percent chance of showers. Risk of a
 thunderstorm in the afternoon. Wind southwest 30 km/h gusting to 50.
 High 14. UV index 3 or moderate.

Mount Forest - Arthur - Northern Wellington County
Orangeville - Grand Valley - Southern Dufferin County
Shelburne - Mansfield - Northern Dufferin County.
Today..A mix of sun and cloud with 30 percent chance of showers. Wind
 southwest 20 km/h. High 17. UV index 5 or moderate.
Tonight..Mainly cloudy with 40 percent chance of showers. Fog patches
 developing overnight. Wind southwest 20 km/h becoming light early
 this evening. Low 9.
Wednesday..Cloudy with 60 percent chance of showers. Risk of a
 thunderstorm in the afternoon. Fog patches dissipating early in the
 morning. Wind becoming southwest 20 km/h gusting to 40 in the
 morning. High 14. UV index 2 or low.

Saugeen Shores - Kincardine - Southern Bruce County
Bruce Peninsula - Sauble Beach - Tobermory.
Today..Mainly cloudy with 40 percent chance of showers. Wind
 southwest 20 km/h gusting to 40. High 16. UV index 4 or moderate.
Tonight..Mainly cloudy with 40 percent chance of showers. Wind
 southwest 20 km/h. Low 11.
Wednesday..Cloudy with 60 percent chance of showers. Risk of a
 thunderstorm in the afternoon. Wind southwest 30 km/h gusting to 50.
 High 13. UV index 2 or low.

Hanover - Dundalk - Southern Grey County
Owen Sound - Blue Mountains - Northern Grey County.
Today..Mainly cloudy with 30 percent chance of showers. Wind becoming
 southwest 20 km/h this afternoon. High 16. UV index 3 or moderate.
Tonight..Mainly cloudy with 40 percent chance of showers. Wind
 southwest 20 km/h becoming light early this evening. Low 10.
Wednesday..Cloudy with 60 percent chance of showers. Risk of a
 thunderstorm in the afternoon. Wind becoming southwest 20 km/h
 gusting to 40 in the morning. High 13. UV index 2 or low.

Barrie - Orillia - Midland.
Today..Mainly cloudy with 30 percent chance of showers. High 17. UV
 index 4 or moderate.
Tonight..Mainly cloudy with 40 percent chance of showers. Fog patches
 developing overnight. Low 10.
Wednesday..Cloudy with 60 percent chance of showers. Risk of a
 thunderstorm in the afternoon. Fog patches dissipating early in the
 morning. Wind becoming southwest 20 km/h gusting to 40 in the
 morning. High 15. UV index 2 or low.

Belleville - Quinte - Northumberland.
Today..Mainly cloudy with 30 percent chance of showers. Wind
 southwest 20 km/h. High 17. UV index 4 or moderate.
Tonight..Cloudy. Periods of rain beginning this evening. Fog patches
 developing overnight. Wind southwest 20 km/h becoming light this
 evening. Low 11.
Wednesday..Cloudy with 60 percent chance of showers. Fog patches
 dissipating early in the morning. Wind becoming southwest 20 km/h
 gusting to 40 in the morning then increasing to 40 gusting to 60 in
 the afternoon. High 16. UV index 2 or low.

Picton - Sandbanks Park.
Today..Cloudy with 40 percent chance of showers. Wind southwest
 20 km/h. High 16. UV index 3 or moderate.
Tonight..Rain. Wind southwest 20 km/h becoming light this evening.
 Low 10.
Wednesday..Periods of rain ending in the morning then cloudy with
 60 percent chance of showers. Wind becoming southwest 40 km/h
 gusting to 60 in the morning. High 15. UV index 3 or moderate.

Napanee - Consecon
Kingston - Odessa - Frontenac Islands.
Today..Cloudy with 40 percent chance of showers. Wind southwest
 20 km/h. High 16. UV index 3 or moderate.
Tonight..Rain. Wind southwest 20 km/h becoming light early this
 evening. Low 11.
Wednesday..Periods of rain ending in the morning then cloudy with
 60 percent chance of showers. Wind becoming southwest 20 km/h
 gusting to 40 in the morning then increasing to 40 gusting to 60 in
 the afternoon. High 16. UV index 3 or moderate.

Lindsay - Southern Kawartha Lakes
Fenelon Falls - Balsam Lake Park - Northern Kawartha Lakes.
Today..A mix of sun and cloud. High 17. UV index 6 or high.
Tonight..Cloudy. 60 percent chance of showers late this evening and
 overnight. Fog patches developing overnight. Low 11.
Wednesday..Cloudy. 60 percent chance of showers in the afternoon. Fog
 patches dissipating early in the morning. Wind becoming southwest
 20 km/h gusting to 40 in the morning. High 15. UV index 2 or low.

Peterborough City - Lakefield - Southern Peterborough County
Apsley - Woodview - Northern Peterborough County.
Today..Mainly cloudy. High 17. UV index 4 or moderate.
Tonight..Cloudy. A few showers beginning this evening. Fog patches
 developing overnight. Low 11.
Wednesday..Cloudy with 60 percent chance of showers. Fog patches
 dissipating early in the morning. Wind becoming southwest 20 km/h
 gusting to 40 in the morning. High 15. UV index 2 or low.

Stirling - Tweed - South Frontenac
Kaladar - Bannockburn - Bon Echo Park
Plevna - Sharbot Lake - Western Lanark County.
Today..Mainly cloudy. High 16. UV index 4 or moderate.
Tonight..Cloudy. Rain beginning this evening. Low 11.
Wednesday..Periods of rain ending in the morning then mainly cloudy
 with 60 percent chance of showers. Wind becoming southwest 20 km/h
 gusting to 40 near noon. High 16. UV index 3 or moderate.

Bancroft - Hastings Highlands - Denbigh
Haliburton
Barry's Bay - Killaloe
Algonquin.
Today..Mainly cloudy. 30 percent chance of showers this afternoon.
 Wind southwest 20 km/h becoming light this afternoon. High 16. UV
 index 4 or moderate.
Tonight..Cloudy. 30 percent chance of showers this evening. A few
 showers beginning near midnight. Low 9.
Wednesday..Showers. Wind becoming southwest 20 km/h gusting to 40
 near noon. High 11. UV index 2 or low.

Brockville - Leeds and Grenville.
Today..Showers. Amount 5 mm. High 17. UV index 2 or low.
Tonight..Rain. Amount 10 to 15 mm. Low 11.
Wednesday..Periods of rain ending near noon then cloudy with
 40 percent chance of showers. Amount 5 to 10 mm. Wind becoming
 southwest 20 km/h gusting to 40 near noon. High 16. UV index 2 or
 low.

City of Ottawa
Gatineau
Smiths Falls - Perth - Eastern Lanark County.
Today..Showers ending early this afternoon then cloudy with
 40 percent chance of showers. Amount 5 mm. High 17. UV index 3 or
 moderate.
Tonight..Rain. Amount 5 to 10 mm. Low 11.
Wednesday..Periods of rain ending near noon then cloudy with
 40 percent chance of showers. Amount 5 to 10 mm. Wind becoming
 southwest 20 km/h gusting to 40 near noon. High 17. UV index 2 or
 low.

Prescott and Russell
Cornwall - Morrisburg.
Today..Showers ending early this afternoon then cloudy with
 40 percent chance of showers. Amount 5 mm. High 17. UV index 3 or
 moderate.
Tonight..Rain. Amount 15 to 25 mm. Low 11.
Wednesday..Periods of rain ending near noon then cloudy with
 40 percent chance of showers. Amount 5 to 10 mm. Wind becoming
 southwest 20 km/h gusting to 40 near noon. High 17. UV index 2 or
 low.

Parry Sound - Muskoka
Burk's Falls - Bayfield Inlet.
Today..Mainly cloudy with 40 percent chance of showers. Wind
 southwest 20 km/h gusting to 40 becoming light this afternoon.
 High 15. UV index 4 or moderate.
Tonight..Cloudy with 60 percent chance of showers. Low 10.
Wednesday..Showers. Risk of a thunderstorm in the afternoon. Wind
 becoming southwest 20 km/h gusting to 40 in the morning. High 13. UV
 index 2 or low.

Renfrew - Arnprior - Calabogie
Petawawa - Pembroke - Cobden.
Today..A mix of sun and cloud. Wind southwest 20 km/h becoming light
 near noon. High 17. UV index 5 or moderate.
Tonight..Cloudy. 30 percent chance of showers this evening. Showers
 beginning near midnight. Low 10.
Wednesday..Showers ending in the morning then cloudy with 60 percent
 chance of showers. Wind becoming southwest 20 km/h near noon.
 High 15. UV index 2 or low.

End
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