FPCN11 CWTO 311930
Forecasts for Southern Ontario and the National Capital Region issued
by Environment Canada at 3:30 p.m. EDT Thursday 31 July 2025 for
tonight Friday and Friday night.
The next scheduled forecast will be issued at 5:00 a.m. EDT Friday.

City of Toronto.
Tonight..Partly cloudy. Low 14.
Friday..Mainly sunny. High 24. UV index 8 or very high.
Friday night..Clear. Wind north 20 km/h becoming light after
 midnight. Low 15.

Windsor - Leamington - Essex County.
Tonight..A few clouds. Local smoke this evening. Wind northeast
 20 km/h gusting to 40 becoming light late this evening. Low 12.
Friday..Sunny. Wind becoming northeast 30 km/h in the morning.
 High 24. Humidex 25. UV index 9 or very high.
Friday night..Clear. Wind northeast 30 km/h becoming light near
 midnight. Low 14.

Chatham-Kent - Rondeau Park.
Tonight..Partly cloudy. Clearing near midnight. Local smoke this
 evening. Wind east 20 km/h gusting to 40 becoming light early this
 evening. Low 10.
Friday..Sunny. Becoming a mix of sun and cloud in the afternoon. Wind
 becoming north 30 km/h late in the morning. High 24. Humidex 25. UV
 index 9 or very high.
Friday night..Clear. Wind north 30 km/h becoming light in the
 evening. Low 9.

Sarnia - Petrolia - Western Lambton County.
Tonight..Partly cloudy. Clearing this evening. Local smoke this
 evening. Wind north 30 km/h gusting to 50. Low 12.
Friday..Sunny. Wind becoming north 30 km/h gusting to 50 late in the
 morning. High 25. Humidex 27. UV index 9 or very high.
Friday night..Clear. Wind north 30 km/h gusting to 50 becoming light
 near midnight. Low 10.

Watford - Pinery Park - Eastern Lambton County.
Tonight..A few clouds. Local smoke this evening. Wind northeast
 20 km/h gusting to 40 becoming light this evening. Low 12.
Friday..A mix of sun and cloud. High 25. Humidex 27. UV index 9 or
 very high.
Friday night..Clear. Low 10.

Rodney - Shedden - Western Elgin County.
Tonight..Partly cloudy. Clearing late this evening. Local smoke early
 this evening. Wind northeast 20 km/h gusting to 40 becoming light
 this evening. Low 11.
Friday..Sunny. Becoming a mix of sun and cloud near noon. Wind
 becoming north 20 km/h late in the morning. High 26. Humidex 28. UV
 index 9 or very high.
Friday night..Clear. Low 11.

St. Thomas - Aylmer - Eastern Elgin County.
Tonight..Partly cloudy. Becoming clear this evening. Local smoke
 early this evening. Wind northeast 20 km/h gusting to 40 becoming
 light this evening. Low 11.
Friday..Sunny. Becoming a mix of sun and cloud near noon. Wind
 becoming northeast 20 km/h late in the morning. High 26. Humidex 28.
 UV index 9 or very high.
Friday night..Clear. Low 11.

Strathroy - Komoka - Western Middlesex County.
Tonight..Partly cloudy. Clearing late this evening. Local smoke early
 this evening. Wind northeast 20 km/h gusting to 40 becoming light
 early this evening. Low 11.
Friday..Mainly sunny. Wind becoming north 20 km/h late in the
 morning. High 26. Humidex 27. UV index 9 or very high.
Friday night..Clear. Wind north 20 km/h becoming light in the
 evening. Low 10.

London - Parkhill - Eastern Middlesex County.
Tonight..A few clouds. Local smoke early this evening. Wind northeast
 20 km/h gusting to 40 becoming light early this evening. Low 11.
Friday..Sunny. Becoming a mix of sun and cloud near noon. Wind
 becoming north 20 km/h late in the morning. High 26. Humidex 27. UV
 index 9 or very high.
Friday night..Clear. Low 10.

Simcoe - Delhi - Norfolk.
Tonight..Clear. Local smoke early this evening. Wind northeast
 20 km/h gusting to 40 becoming light this evening. Low 10.
Friday..Sunny. Becoming a mix of sun and cloud near noon. Wind
 becoming northeast 20 km/h late in the morning. High 26. Humidex 28.
 UV index 9 or very high.
Friday night..Clear. Low 8.

Dunnville - Caledonia - Haldimand.
Tonight..Clear. Becoming partly cloudy late this evening. Local smoke
 early this evening. Wind northeast 20 km/h gusting to 40 becoming
 light this evening. Low 11.
Friday..A mix of sun and cloud. High 24. Humidex 26. UV index 9 or
 very high.
Friday night..Clear. Low 10.

Woodstock - Tillsonburg - Oxford County.
Tonight..A few clouds. Local smoke early this evening. Wind northeast
 20 km/h gusting to 40 becoming light early this evening. Low 11.
Friday..Sunny. Becoming a mix of sun and cloud near noon. High 25.
 Humidex 26. UV index 8 or very high.
Friday night..Clear. Low 9.

Brantford - County of Brant.
Tonight..A few clouds. Local smoke early this evening. Wind northeast
 20 km/h gusting to 40 becoming light early this evening. Low 11.
Friday..Sunny. Becoming a mix of sun and cloud near noon. Wind
 becoming northeast 20 km/h late in the morning. High 25. Humidex 26.
 UV index 8 or very high.
Friday night..Clear. Low 9.

Niagara Falls - Welland - Southern Niagara Region.
Tonight..A few clouds. Local smoke early this evening. Wind east
 20 km/h becoming light this evening. Low 13.
Friday..Mainly sunny. Wind northeast 20 km/h becoming light late in
 the morning. High 25. Humidex 27. UV index 9 or very high.
Friday night..Clear. Low 13.

St. Catharines - Grimsby - Northern Niagara Region.
Tonight..Partly cloudy. Local smoke early this evening. Wind east
 20 km/h gusting to 40 becoming light this evening. Low 13.
Friday..Mainly sunny. High 25. Humidex 27. UV index 9 or very high.
Friday night..Clear. Low 13.

City of Hamilton.
Tonight..A few clouds. Local smoke early this evening. Wind east
 20 km/h gusting to 40 becoming light this evening. Low 13.
Friday..Mainly sunny. Wind northeast 20 km/h becoming light in the
 afternoon. High 24. Humidex 26. UV index 9 or very high.
Friday night..Clear. Low 11.

Burlington - Oakville.
Tonight..Partly cloudy. Local smoke early this evening. Wind east
 30 km/h becoming light early this evening. Low 13.
Friday..Mainly sunny. High 24. Humidex 25. UV index 8 or very high.
Friday night..Clear. Low 13.

Halton Hills - Milton.
Tonight..A few clouds. Local smoke early this evening. Wind east
 20 km/h gusting to 40 becoming light early this evening. Low 13.
Friday..Mainly sunny. High 24. Humidex 25. UV index 8 or very high.
Friday night..Clear. Low 13.

Mississauga - Brampton.
Tonight..Partly cloudy. Low 13.
Friday..Mainly sunny. High 24. Humidex 25. UV index 8 or very high.
Friday night..Clear. Low 13.

Caledon.
Tonight..Partly cloudy. Wind northeast 20 km/h becoming light early
 this evening. Low 13.
Friday..Sunny. High 24. Humidex 25. UV index 8 or very high.
Friday night..Clear. Low 13.

Vaughan - Richmond Hill - Markham.
Tonight..Partly cloudy. Wind southeast 20 km/h becoming light early
 this evening. Low 12.
Friday..Mainly sunny. High 25. UV index 8 or very high.
Friday night..Clear. Low 11.

Newmarket - Georgina - Northern York Region.
Tonight..Partly cloudy. Low 12.
Friday..Mainly sunny. High 25. UV index 8 or very high.
Friday night..Clear. Low 11.

Pickering - Oshawa - Southern Durham Region.
Tonight..Partly cloudy. Wind southeast 20 km/h becoming light early
 this evening. Low 12.
Friday..Mainly sunny. High 25. UV index 8 or very high.
Friday night..Clear. Low 11.

Uxbridge - Beaverton - Northern Durham Region.
Tonight..Partly cloudy. Low 12.
Friday..Mainly sunny. High 25. UV index 8 or very high.
Friday night..Clear. Low 11.

Goderich - Bluewater - Southern Huron County.
Tonight..Clearing early this evening. Local smoke early this evening.
 Wind north 30 km/h becoming light late this evening. Low 10.
Friday..Sunny. Wind becoming northeast 20 km/h then northwest 30 late
 in the morning. High 25. UV index 8 or very high.
Friday night..Clear. Wind north 30 km/h becoming light in the
 evening. Low 9.

Wingham - Blyth - Northern Huron County.
Tonight..Clear. Local smoke early this evening. Wind north 20 km/h
 becoming light this evening. Low 10.
Friday..Mainly sunny. Wind northeast 20 km/h becoming light in the
 afternoon. High 25. UV index 8 or very high.
Friday night..Clear. Low 9.

Stratford - Mitchell - Southern Perth County.
Tonight..Partly cloudy. Clearing this evening. Local smoke early this
 evening. Wind northeast 20 km/h gusting to 40 becoming light late
 this evening. Low 10.
Friday..Sunny. Wind becoming north 20 km/h late in the morning.
 High 25. UV index 8 or very high.
Friday night..Clear. Low 9.

Listowel - Milverton - Northern Perth County.
Tonight..Clearing early this evening. Local smoke early this evening.
 Wind north 20 km/h becoming light this evening. Low 10.
Friday..Sunny. Wind northeast 20 km/h becoming light in the
 afternoon. High 25. UV index 8 or very high.
Friday night..Clear. Low 9.

Kitchener - Cambridge - Region of Waterloo.
Tonight..Partly cloudy. Clearing this evening. Local smoke early this
 evening. Wind northeast 20 km/h gusting to 40 becoming light early
 this evening. Low 12.
Friday..Sunny. High 24. Humidex 25. UV index 8 or very high.
Friday night..Clear. Low 9.

Guelph - Erin - Southern Wellington County.
Tonight..Partly cloudy. Clearing this evening. Local smoke early this
 evening. Wind northeast 20 km/h becoming light early this evening.
 Low 12.
Friday..Sunny. High 24. Humidex 25. UV index 8 or very high.
Friday night..Clear. Low 9.

Mount Forest - Arthur - Northern Wellington County.
Tonight..Clear. Local smoke early this evening. Wind north 20 km/h
 becoming light this evening. Low 12.
Friday..Sunny. Wind north 20 km/h becoming light in the afternoon.
 High 24. Humidex 25. UV index 8 or very high.
Friday night..Clear. Low 9.

Orangeville - Grand Valley - Southern Dufferin County.
Tonight..A few clouds. Wind north 20 km/h becoming light this
 evening. Low 15.
Friday..Sunny. Wind becoming northeast 20 km/h late in the morning.
 High 23. UV index 8 or very high.
Friday night..Clear. Low 10.

Shelburne - Mansfield - Northern Dufferin County.
Tonight..A few clouds. Wind north 20 km/h becoming light this
 evening. Low 15.
Friday..Sunny. Wind northeast 20 km/h becoming light in the
 afternoon. High 23. UV index 8 or very high.
Friday night..Clear. Low 10.

Innisfil - New Tecumseth - Angus.
Tonight..Partly cloudy. Wind northwest 20 km/h becoming light this
 evening. Low 15.
Friday..Sunny. Wind becoming north 20 km/h late in the morning.
 High 23. UV index 8 or very high.
Friday night..Clear. Low 10.

Saugeen Shores - Kincardine - Southern Bruce County.
Tonight..Clear. Local smoke early this evening. Wind north 30 km/h
 becoming light this evening. Low 13.
Friday..Mainly sunny. Wind becoming north 30 km/h in the morning.
 High 23. Humidex 25. UV index 8 or very high.
Friday night..Clear. Wind north 20 km/h becoming light in the
 evening. Low 13.

Bruce Peninsula - Sauble Beach - Tobermory.
Tonight..Clear. Becoming partly cloudy this evening. Low 13.
Friday..Sunny. High 23. Humidex 25. UV index 8 or very high.
Friday night..Clear. Low 13.

Hanover - Dundalk - Southern Grey County.
Tonight..Clear. Low 14.
Friday..Sunny. Wind northeast 20 km/h becoming light in the
 afternoon. High 22. UV index 8 or very high.
Friday night..Clear. Low 10.

Owen Sound - Blue Mountains - Northern Grey County.
Tonight..Clear. Becoming partly cloudy after midnight. Wind north
 20 km/h becoming light early this evening. Low 14.
Friday..Clearing in the morning. High 22. UV index 8 or very high.
Friday night..Clear. Low 10.

Barrie - Collingwood - Hillsdale.
Tonight..Partly cloudy. Low 13.
Friday..Sunny. Wind becoming north 20 km/h late in the morning.
 High 23. UV index 8 or very high.
Friday night..Clear. Low 10.

Midland - Coldwater - Orr Lake.
Tonight..Partly cloudy. Wind becoming northeast 30 km/h this evening.
 Low 13.
Friday..Sunny. Wind becoming northwest 30 km/h late in the morning.
 High 24. UV index 8 or very high.
Friday night..Clear. Wind northwest 30 km/h becoming light in the
 evening. Low 17.

Orillia - Lagoon City - Washago.
Tonight..Partly cloudy. Wind northeast 20 km/h becoming light after
 midnight. Low 13.
Friday..Sunny. Wind becoming northwest 20 km/h late in the afternoon.
 High 24. UV index 8 or very high.
Friday night..Partly cloudy. Becoming clear in the evening. Wind
 northwest 30 km/h becoming light after midnight. Low 17.

Cobourg - Colborne - Western Northumberland County.
Tonight..Clear. Wind northeast 20 km/h becoming light this evening.
 Low 13.
Friday..Sunny. Wind becoming northeast 20 km/h late in the morning.
 High 25. UV index 8 or very high.
Friday night..Clear. Low 12.

Belleville - Quinte West - Eastern Northumberland County.
Tonight..Clear. Wind northeast 20 km/h becoming light this evening.
 Low 13.
Friday..Sunny. Wind becoming northeast 20 km/h late in the morning.
 High 25. UV index 8 or very high.
Friday night..Clear. Low 12.

Picton - Sandbanks Park.
Tonight..Clear. Wind northeast 20 km/h becoming light this evening.
 Low 13.
Friday..Sunny. Wind becoming northeast 20 km/h late in the morning.
 High 25. UV index 8 or very high.
Friday night..Clear. Low 10.

Napanee - Consecon.
Tonight..Clear. Wind northeast 20 km/h becoming light this evening.
 Low 13.
Friday..Sunny. Wind becoming northeast 20 km/h late in the morning.
 High 25. UV index 8 or very high.
Friday night..Clear. Low 10.

Kingston - Odessa - Frontenac Islands.
Tonight..Clear. Wind northeast 20 km/h. Low 13.
Friday..Sunny. Wind northeast 20 km/h becoming light late in the
 morning. High 25. UV index 8 or very high.
Friday night..Clear. Low 10.

Lindsay - Southern Kawartha Lakes.
Tonight..Mainly cloudy. Low 10.
Friday..Mainly sunny. High 24. UV index 8 or very high.
Friday night..Clear. Low 8.

Fenelon Falls - Balsam Lake Park - Northern Kawartha Lakes.
Tonight..Partly cloudy. Low 10.
Friday..Sunny. Becoming a mix of sun and cloud near noon. High 24. UV
 index 8 or very high.
Friday night..Clear. Low 8.

Peterborough City - Lakefield - Southern Peterborough County.
Tonight..Partly cloudy. Low 10.
Friday..Mainly sunny. High 24. UV index 8 or very high.
Friday night..Partly cloudy. Becoming clear in the evening. Low 8.

Apsley - Woodview - Northern Peterborough County.
Tonight..Clearing. Low 10.
Friday..Sunny. Becoming a mix of sun and cloud in the afternoon. Wind
 becoming northeast 20 km/h late in the morning. High 24. UV index 8
 or very high.
Friday night..Clear. Low 8.

Stirling - Tweed - Madoc.
Tonight..A few clouds. Low 13.
Friday..Sunny. High 24. UV index 8 or very high.
Friday night..Clear. Low 10.

Tamworth - Sydenham - South Frontenac.
Tonight..A few clouds. Low 13.
Friday..Sunny. Wind north 20 km/h becoming light late in the morning.
 High 24. UV index 8 or very high.
Friday night..Clear. Low 10.

Kaladar - Bannockburn - Bon Echo Park.
Tonight..Partly cloudy. Becoming clear after midnight. Low 12.
Friday..Sunny. High 24. UV index 8 or very high.
Friday night..Clear. Low 9.

Bancroft - Hastings Highlands - Denbigh.
Tonight..Mainly cloudy. Clearing this evening. Low 8.
Friday..Sunny. Becoming a mix of sun and cloud in the afternoon.
 High 23. UV index 8 or very high.
Friday night..A few clouds. Low 11.

Gananoque - Mallorytown.
Tonight..Clear. Wind northeast 20 km/h. Low 10.
Friday..Sunny. Wind northeast 20 km/h becoming light in the morning.
 High 24. UV index 8 or very high.
Friday night..Clear. Low 9.

Brockville - Prescott.
Tonight..Clear. Low 10.
Friday..Sunny. High 24. UV index 8 or very high.
Friday night..Clear. Low 9.

Westport - Charleston Lake.
Tonight..A few clouds. Wind northeast 20 km/h. Low 10.
Friday..Sunny. Wind northeast 20 km/h becoming light in the morning.
 High 24. UV index 8 or very high.
Friday night..Clear. Low 9.

Merrickville-Wolford - Kemptville.
Tonight..Clearing. Low 10.
Friday..Sunny. High 24. UV index 8 or very high.
Friday night..Clear. Low 9.

Ottawa North - Kanata - Orl�ans.
Tonight..Clearing. Low 13.
Friday..Sunny. High 24. UV index 8 or very high.
Friday night..Clear. Low 11.

Ottawa South - Richmond - Metcalfe.
Tonight..Clearing. Low 13.
Friday..Sunny. High 24. UV index 8 or very high.
Friday night..Clear. Low 11.

Gatineau.
Tonight..Partly cloudy. Becoming clear this evening. Low 13.
Friday..Sunny. High 25. UV index 8 or very high.
Friday night..Clear. Low 9.

Prescott and Russell.
Tonight..Clearing. Low 15.
Friday..Mainly sunny. High 24. UV index 8 or very high.
Friday night..Clear. Low 10.

Morrisburg - Long Sault.
Tonight..A few clouds. Low 12.
Friday..Mainly sunny. High 24. UV index 8 or very high.
Friday night..Clear. Low 8.

Cornwall - Lancaster.
Tonight..A few clouds. Low 12.
Friday..Clearing in the morning. High 24. UV index 8 or very high.
Friday night..Clear. Low 8.

Winchester - Newington.
Tonight..Clearing. Low 12.
Friday..Mainly sunny. High 24. UV index 8 or very high.
Friday night..Clear. Low 8.

Maxville - Alexandria.
Tonight..A few clouds. Low 11.
Friday..Clearing in the morning. High 24. UV index 8 or very high.
Friday night..Clear. Low 8.

Plevna - Sharbot Lake - Western Lanark County.
Tonight..Partly cloudy. Clearing after midnight. Low 12.
Friday..Sunny. High 23. UV index 8 or very high.
Friday night..Clear. Low 10.

Smiths Falls - Perth - Eastern Lanark County.
Tonight..Partly cloudy. Becoming clear this evening. Low 12.
Friday..Sunny. High 23. UV index 8 or very high.
Friday night..Clear. Low 10.

Port Carling - Port Severn.
Tonight..Partly cloudy. Wind becoming northeast 20 km/h this evening.
 Low 15.
Friday..Sunny. Becoming a mix of sun and cloud near noon. Wind
 becoming northwest 30 km/h late in the morning. High 24. UV index 7
 or high.
Friday night..A few clouds. Wind northwest 30 km/h becoming light
 near midnight. Wind becoming west 30 before morning. Low 17.

Bracebridge - Gravenhurst.
Tonight..A few clouds. Low 9.
Friday..Sunny. Becoming a mix of sun and cloud in the afternoon.
 High 25. UV index 8 or very high.
Friday night..Partly cloudy. Becoming clear before morning. Low 9.

Town of Parry Sound - Rosseau - Killbear Park.
Tonight..Clear. Wind north 30 km/h becoming light late this evening.
 Low 12.
Friday..Sunny. Becoming a mix of sun and cloud late in the morning.
 Wind becoming west 30 km/h late in the morning. High 23. Humidex 26.
 UV index 7 or high.
Friday night..Clear. Becoming partly cloudy late in the evening. Wind
 northwest 30 km/h becoming light in the evening. Wind becoming west
 30 after midnight. Low 12.

Huntsville - Baysville.
Tonight..Partly cloudy. Clearing this evening. Low 12.
Friday..Sunny. Becoming a mix of sun and cloud late in the morning.
 Wind becoming north 20 km/h late in the morning. High 23. Humidex
 26. UV index 7 or high.
Friday night..Partly cloudy. Low 12.

Haliburton - Minden - Southern Haliburton County.
Tonight..Partly cloudy. Low 10.
Friday..Sunny. Becoming a mix of sun and cloud in the afternoon.
 High 22. UV index 8 or very high.
Friday night..A few clouds. Low 9.

Oxtongue Lake - Fort Irwin - Northern Haliburton County.
Tonight..Partly cloudy. Low 10.
Friday..Sunny. Becoming a mix of sun and cloud near noon. Wind
 becoming north 20 km/h late in the morning. High 22. UV index 8 or
 very high.
Friday night..A few clouds. Low 9.

Barry's Bay - Killaloe.
Tonight..Mainly cloudy. Clearing late this evening. Low 11.
Friday..Sunny. Becoming a mix of sun and cloud in the afternoon. Wind
 becoming northwest 20 km/h late in the morning. High 23. UV index 7
 or high.
Friday night..A few clouds. Low 12.

Renfrew - Arnprior - Calabogie.
Tonight..Mainly cloudy. Clearing late this evening. Low 11.
Friday..Sunny. Wind becoming north 20 km/h late in the morning.
 High 23. UV index 7 or high.
Friday night..A few clouds. Low 12.

Petawawa - Pembroke - Cobden.
Tonight..Mainly cloudy. Clearing this evening. Wind becoming
 northeast 30 km/h this evening then light after midnight. Low 11.
Friday..Sunny. Becoming a mix of sun and cloud in the afternoon. Wind
 becoming northwest 20 km/h late in the morning. High 23. UV index 7
 or high.
Friday night..Partly cloudy. Low 12.

Western Algonquin Park - Lake of Two Rivers.
Tonight..Mainly cloudy. Clearing this evening. Low 7.
Friday..Sunny. Becoming a mix of sun and cloud late in the morning.
 High 22. UV index 7 or high.
Friday night..A few clouds. Low 9.

Deep River - Whitney - Eastern Algonquin Park.
Tonight..Mainly cloudy. Clearing this evening. Low 7.
Friday..Sunny. Becoming a mix of sun and cloud near noon. High 22. UV
 index 7 or high.
Friday night..Partly cloudy. Low 9.

Bayfield Inlet - Dunchurch.
Tonight..Partly cloudy. Clearing this evening. Low 11.
Friday..Sunny. Becoming a mix of sun and cloud in the morning.
 High 24. Humidex 25. UV index 7 or high.
Friday night..Partly cloudy. Low 13.

South River - Burk's Falls.
Tonight..Partly cloudy. Clearing this evening. Low 11.
Friday..Sunny. Becoming a mix of sun and cloud in the morning.
 High 24. Humidex 25. UV index 7 or high.
Friday night..Partly cloudy. Low 13.

End
$$$$^^

--- up 4 hours, 19 minutes
 * Origin: Northern Realms (618:400/23)