FPCN11 CWTO 111930
Forecasts for Southern Ontario and the National Capital Region issued
by Environment Canada at 3:30 p.m. EDT Saturday 11 July 2026 for
tonight Sunday and Sunday night.
The next scheduled forecast will be issued at 5:00 a.m. EDT Sunday.

City of Toronto.
Tonight..Partly cloudy. Becoming clear this evening. Low 17.
Sunday..Sunny. High 29. Humidex 32. UV index 8 or very high.
Sunday night..Clear. Low 18.

Windsor - Leamington - Essex County.
Tonight..Mainly cloudy. Clearing this evening. Wind northeast 30 km/h
 becoming light late this evening. Low 15.
Sunday..Sunny. High 28. Humidex 29. UV index 9 or very high.
Sunday night..Clear. Low 13.

Chatham-Kent - Rondeau Park.
Tonight..Partly cloudy. Clearing this evening. Low 15.
Sunday..Sunny. Wind east 20 km/h becoming light in the afternoon.
 High 28. Humidex 29. UV index 9 or very high.
Sunday night..Clear. Low 13.

Sarnia - Petrolia - Western Lambton County.
Tonight..Clear. Wind north 30 km/h becoming light late this evening.
 Low 16.
Sunday..Sunny. High 29. Humidex 31. UV index 9 or very high.
Sunday night..Clear. Low 15.

Watford - Pinery Park - Eastern Lambton County.
Tonight..Clear. Wind northeast 20 km/h becoming light this evening.
 Low 16.
Sunday..Sunny. Wind east 20 km/h becoming light late in the morning.
 High 29. Humidex 31. UV index 9 or very high.
Sunday night..Clear. Low 15.

Rodney - Shedden - Western Elgin County.
Tonight..Partly cloudy. Becoming clear this evening. Low 16.
Sunday..Sunny. Wind east 20 km/h becoming light in the afternoon.
 High 28. Humidex 31. UV index 9 or very high.
Sunday night..Clear. Low 13.

St. Thomas - Aylmer - Eastern Elgin County.
Tonight..Partly cloudy. Becoming clear this evening. Low 16.
Sunday..Sunny. Wind east 20 km/h becoming light late in the morning.
 High 28. Humidex 31. UV index 9 or very high.
Sunday night..Clear. Low 13.

Strathroy - Komoka - Western Middlesex County.
Tonight..Partly cloudy. Becoming clear this evening. Low 15.
Sunday..Sunny. High 29. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Low 14.

London - Parkhill - Eastern Middlesex County.
Tonight..Clearing early this evening. Low 15.
Sunday..Sunny. Wind east 20 km/h becoming light late in the morning.
 High 29. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Low 14.

Simcoe - Delhi - Norfolk.
Tonight..Clear. Low 13.
Sunday..Sunny. Wind east 20 km/h becoming light in the afternoon.
 High 28. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Low 10.

Dunnville - Caledonia - Haldimand.
Tonight..Clear. Low 13.
Sunday..Sunny. Wind northeast 20 km/h becoming light late in the
 morning. High 28. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Low 13.

Woodstock - Tillsonburg - Oxford County.
Tonight..Clearing early this evening. Low 14.
Sunday..Sunny. Wind east 20 km/h becoming light late in the morning.
 High 28. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Low 13.

Brantford - County of Brant.
Tonight..Clear. Low 14.
Sunday..Sunny. Wind east 20 km/h becoming light late in the morning.
 High 28. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Low 13.

Niagara Falls - Welland - Southern Niagara Region.
Tonight..Clear. Wind northeast 20 km/h becoming light early this
 evening. Low 19.
Sunday..Sunny. Wind northeast 20 km/h becoming light late in the
 morning. High 29. Humidex 33. UV index 8 or very high.
Sunday night..Clear. Low 20.

St. Catharines - Grimsby - Northern Niagara Region.
Tonight..Clear. Low 15.
Sunday..Sunny. High 28. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Low 15.

City of Hamilton.
Tonight..Clear. Low 15.
Sunday..Sunny. High 28. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Low 15.

Burlington - Oakville.
Tonight..A few clouds. Low 16.
Sunday..Sunny. High 28. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Low 15.

Halton Hills - Milton.
Tonight..A few clouds. Low 15.
Sunday..Sunny. High 28. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Low 15.

Mississauga - Brampton.
Tonight..A few clouds. Wind east 20 km/h becoming light early this
 evening. Low 15.
Sunday..Sunny. High 29. Humidex 32. UV index 8 or very high.
Sunday night..Clear. Low 15.

Caledon.
Tonight..Clear. Low 14.
Sunday..Sunny. High 28. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Wind becoming west 20 km/h before morning.
 Low 15.

Vaughan - Richmond Hill - Markham.
Tonight..A few clouds. Low 13.
Sunday..Sunny. High 29. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Low 15.

Newmarket - Georgina - Northern York Region.
Tonight..Clear. Low 13.
Sunday..Sunny. High 28. Humidex 29. UV index 8 or very high.
Sunday night..Clear. Low 15.

Pickering - Oshawa - Southern Durham Region.
Tonight..Clear. Low 13.
Sunday..Sunny. High 29. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Low 15.

Uxbridge - Beaverton - Northern Durham Region.
Tonight..Clear. Low 13.
Sunday..Sunny. High 28. Humidex 29. UV index 8 or very high.
Sunday night..Clear. Low 15.

Goderich - Bluewater - Southern Huron County.
Tonight..Clearing early this evening. Wind north 30 km/h becoming
 light this evening. Low 15.
Sunday..Sunny. High 27. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Low 16.

Wingham - Blyth - Northern Huron County.
Tonight..Clearing early this evening. Low 13.
Sunday..Sunny. High 29. UV index 8 or very high.
Sunday night..Clear. Low 16.

Stratford - Mitchell - Southern Perth County.
Tonight..Partly cloudy. Becoming clear this evening. Low 13.
Sunday..Sunny. High 29. UV index 8 or very high.
Sunday night..Clear. Low 16.

Listowel - Milverton - Northern Perth County.
Tonight..Clear. Low 13.
Sunday..Sunny. High 28. UV index 8 or very high.
Sunday night..Clear. Wind becoming southwest 20 km/h gusting to 40
 before morning. Low 16.

Kitchener - Cambridge - Region of Waterloo.
Tonight..Clear. Low 14.
Sunday..Sunny. High 29. UV index 8 or very high.
Sunday night..Clear. Low 13.

Guelph - Erin - Southern Wellington County.
Tonight..Clear. Low 14.
Sunday..Sunny. High 29. UV index 8 or very high.
Sunday night..Clear. Low 13.

Mount Forest - Arthur - Northern Wellington County.
Tonight..Clear. Low 12.
Sunday..Sunny. High 28. UV index 8 or very high.
Sunday night..Clear. Wind becoming southwest 20 km/h before morning.
 Low 13.

Orangeville - Grand Valley - Southern Dufferin County.
Tonight..Clear. Low 12.
Sunday..Sunny. High 27. Humidex 28. UV index 8 or very high.
Sunday night..Clear. Wind becoming southwest 20 km/h before morning.
 Low 15.

Shelburne - Mansfield - Northern Dufferin County.
Tonight..Clear. Low 12.
Sunday..Sunny. High 27. Humidex 28. UV index 8 or very high.
Sunday night..Clear. Low 15.

Innisfil - New Tecumseth - Angus.
Tonight..Clear. Low 12.
Sunday..Sunny. High 28. UV index 8 or very high.
Sunday night..Clear. Low 15.

Saugeen Shores - Kincardine - Southern Bruce County.
Tonight..Clear. Wind north 30 km/h becoming light this evening.
 Low 15.
Sunday..Sunny. High 28. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Becoming partly cloudy before morning. Wind
 becoming south 30 km/h gusting to 50 before morning. Low 20.

Bruce Peninsula - Sauble Beach - Tobermory.
Tonight..Clear. Low 18.
Sunday..Sunny. High 29. Humidex 34. UV index 8 or very high.
Sunday night..Clear. Increasing cloudiness after midnight then
 30 percent chance of showers overnight. Risk of a thunderstorm
 overnight. Wind becoming southwest 20 km/h gusting to 40 after
 midnight. Low 20.

Hanover - Dundalk - Southern Grey County.
Tonight..Clear. Low 12.
Sunday..Sunny. High 28. UV index 8 or very high.
Sunday night..Clear. Becoming partly cloudy before morning. Wind
 becoming southwest 20 km/h before morning. Low 19.

Owen Sound - Blue Mountains - Northern Grey County.
Tonight..Clear. Low 12.
Sunday..Sunny. High 29. UV index 8 or very high.
Sunday night..Clear. Increasing cloudiness after midnight. Wind
 becoming southwest 30 km/h before morning. Low 19.

Barrie - Collingwood - Hillsdale.
Tonight..Clear. Low 12.
Sunday..Sunny. High 28. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Low 15.

Midland - Coldwater - Orr Lake.
Tonight..Clear. Low 12.
Sunday..Sunny. High 28. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Becoming partly cloudy before morning. Low 15.

Orillia - Lagoon City - Washago.
Tonight..Clear. Low 12.
Sunday..Sunny. High 28. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Wind becoming southwest 30 km/h near midnight.
 Low 21.

Cobourg - Colborne - Western Northumberland County.
Tonight..Clear. Low 13.
Sunday..Sunny. High 28. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Low 16.

Belleville - Quinte West - Eastern Northumberland County.
Tonight..Clear. Low 13.
Sunday..Sunny. High 28. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Low 16.

Picton - Sandbanks Park.
Tonight..Clear. Low 13.
Sunday..Sunny. High 28. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Low 16.

Napanee - Consecon.
Tonight..Clear. Low 13.
Sunday..Sunny. High 28. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Low 16.

Kingston - Odessa - Frontenac Islands.
Tonight..Clear. Wind northeast 20 km/h becoming light this evening.
 Low 13.
Sunday..Sunny. High 28. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Low 16.

Lindsay - Southern Kawartha Lakes.
Tonight..Clear. Low 12.
Sunday..Sunny. High 28. Humidex 29. UV index 8 or very high.
Sunday night..Clear. Low 15.

Fenelon Falls - Balsam Lake Park - Northern Kawartha Lakes.
Tonight..Clear. Low 12.
Sunday..Sunny. High 28. Humidex 29. UV index 8 or very high.
Sunday night..Clear. Wind becoming southwest 20 km/h before morning.
 Low 15.

Peterborough City - Lakefield - Southern Peterborough County.
Tonight..Clear. Low 12.
Sunday..Sunny. High 29. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Low 12.

Apsley - Woodview - Northern Peterborough County.
Tonight..Clear. Low 12.
Sunday..Sunny. Becoming a mix of sun and cloud in the afternoon.
 High 29. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Low 12.

Stirling - Tweed - Madoc.
Tonight..Clear. Low 13.
Sunday..Sunny. High 29. UV index 8 or very high.
Sunday night..Clear. Low 16.

Tamworth - Sydenham - South Frontenac.
Tonight..Clear. Low 13.
Sunday..Sunny. High 29. UV index 8 or very high.
Sunday night..Clear. Low 16.

Kaladar - Bannockburn - Bon Echo Park.
Tonight..Clear. Low 12.
Sunday..Sunny. High 28. Humidex 29. UV index 8 or very high.
Sunday night..Clear. Low 15.

Bancroft - Hastings Highlands - Denbigh.
Tonight..Clear. Low 10.
Sunday..Sunny. Becoming a mix of sun and cloud in the afternoon.
 High 28. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Low 12.

Gananoque - Mallorytown.
Tonight..Clear. Low 12.
Sunday..Sunny. High 29. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Low 16.

Brockville - Prescott.
Tonight..Clear. Low 12.
Sunday..Sunny. High 29. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Low 16.

Westport - Charleston Lake.
Tonight..Clear. Low 12.
Sunday..Sunny. High 29. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Low 16.

Merrickville-Wolford - Kemptville.
Tonight..Clear. Low 12.
Sunday..Sunny. High 29. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Low 16.

Ottawa North - Kanata - Orl�ans.
Tonight..Clear. Low 13.
Sunday..Sunny. High 29. Humidex 32. UV index 8 or very high.
Sunday night..Clear. Low 17.

Ottawa South - Richmond - Metcalfe.
Tonight..Clear. Low 13.
Sunday..Sunny. High 29. Humidex 32. UV index 8 or very high.
Sunday night..Clear. Low 17.

Gatineau.
Tonight..Clear. Low 13.
Sunday..Sunny. High 29. Humidex 32. UV index 8 or very high.
Sunday night..Clear. Low 14.

Prescott and Russell.
Tonight..Clear. Low 13.
Sunday..Sunny. High 27. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Low 16.

Morrisburg - Long Sault.
Tonight..Clear. Low 13.
Sunday..Sunny. High 28. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Low 15.

Cornwall - Lancaster.
Tonight..Clear. Low 13.
Sunday..Sunny. High 28. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Low 15.

Winchester - Newington.
Tonight..Clear. Low 13.
Sunday..Sunny. High 28. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Low 15.

Maxville - Alexandria.
Tonight..Clear. Low 12.
Sunday..Sunny. High 28. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Low 15.

Plevna - Sharbot Lake - Western Lanark County.
Tonight..Clear. Low 12.
Sunday..Sunny. High 28. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Low 16.

Smiths Falls - Perth - Eastern Lanark County.
Tonight..Clear. Low 12.
Sunday..Sunny. High 28. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Low 16.

Port Carling - Port Severn.
Tonight..Clear. Low 15.
Sunday..Sunny. High 28. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Becoming partly cloudy overnight. Low 20.

Bracebridge - Gravenhurst.
Tonight..Clear. Low 10.
Sunday..Sunny. High 29. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Becoming partly cloudy overnight. Low 15.

Town of Parry Sound - Rosseau - Killbear Park.
Tonight..Clear. Low 13.
Sunday..Sunny. High 28. Humidex 29. UV index 8 or very high.
Sunday night..Clear. Increasing cloudiness after midnight then
 30 percent chance of showers overnight. Risk of a thunderstorm
 overnight. Wind becoming southwest 30 km/h before morning. Low 17.

Huntsville - Baysville.
Tonight..Clear. Low 13.
Sunday..Sunny. High 28. Humidex 29. UV index 8 or very high.
Sunday night..Clear. Increasing cloudiness after midnight then
 30 percent chance of showers overnight. Risk of a thunderstorm
 overnight. Low 17.

Haliburton - Minden - Southern Haliburton County.
Tonight..Clear. Low 12.
Sunday..Sunny. High 28. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Becoming partly cloudy before morning. Low 16.

Oxtongue Lake - Fort Irwin - Northern Haliburton County.
Tonight..Clear. Low 12.
Sunday..Sunny. High 28. Humidex 30. UV index 8 or very high.
Sunday night..Clear in the evening and after midnight then partly
 cloudy with 30 percent chance of showers overnight. Risk of a
 thunderstorm overnight. Low 16.

Barry's Bay - Killaloe.
Tonight..Clear. Low 12.
Sunday..Sunny. High 28. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Becoming partly cloudy before morning. Low 18.

Renfrew - Arnprior - Calabogie.
Tonight..Clear. Low 12.
Sunday..Sunny. High 28. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Low 18.

Petawawa - Pembroke - Cobden.
Tonight..Clear. Low 12.
Sunday..Sunny. High 28. Humidex 30. UV index 8 or very high.
Sunday night..Clear. Becoming partly cloudy before morning. Low 18.

Western Algonquin Park - Lake of Two Rivers.
Tonight..Clear. Low 9.
Sunday..Sunny. Becoming a mix of sun and cloud in the afternoon.
 High 28. Humidex 30. UV index 8 or very high.
Sunday night..Clear in the evening and after midnight then partly
 cloudy with 30 percent chance of showers overnight. Risk of a
 thunderstorm overnight. Low 13.

Deep River - Whitney - Eastern Algonquin Park.
Tonight..Clear. Low 9.
Sunday..Sunny. High 28. Humidex 30. UV index 8 or very high.
Sunday night..Clear in the evening and after midnight then partly
 cloudy with 30 percent chance of showers overnight. Risk of a
 thunderstorm overnight. Wind becoming south 20 km/h gusting to 40
 before morning. Low 13.

Bayfield Inlet - Dunchurch.
Tonight..Clear. Low 12.
Sunday..Sunny. High 28. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Increasing cloudiness after midnight then
 30 percent chance of showers overnight. Risk of a thunderstorm
 overnight. Wind becoming south 20 km/h before morning. Low 17.

South River - Burk's Falls.
Tonight..Clear. Low 12.
Sunday..Sunny. High 28. Humidex 31. UV index 8 or very high.
Sunday night..Clear. Increasing cloudiness after midnight then
 30 percent chance of showers overnight. Risk of a thunderstorm
 overnight. Wind becoming south 20 km/h before morning. Low 17.

End
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