FPCN11 CWTO 141930
Forecasts for Southern Ontario and the National Capital Region issued
by Environment Canada at 3:30 p.m. EDT Sunday 14 September 2025 for
tonight Monday and Monday night.
The next scheduled forecast will be issued at 5:00 a.m. EDT Monday.

City of Toronto.
Tonight..Partly cloudy. 30 percent chance of showers early this
 evening. Low 14.
Monday..A mix of sun and cloud. Clearing late in the morning.
 High 24. Humidex 26. UV index 6 or high.
Monday night..Clear. Low 14.

Windsor - Leamington - Essex County.
Tonight..Clear. Fog patches developing after midnight. Low 12.
Monday..Sunny. Fog patches dissipating in the morning. Wind becoming
 east 20 km/h in the afternoon. High 26. Humidex 31. UV index 7 or
 high.
Monday night..Clear. Wind east 20 km/h becoming light in the evening.
 Low 11.

Chatham-Kent - Rondeau Park.
Tonight..Partly cloudy. Clearing late this evening. Fog patches
 developing after midnight. Low 12.
Monday..Sunny. Fog patches dissipating in the morning. Wind east
 20 km/h becoming light in the afternoon. High 26. Humidex 31. UV
 index 7 or high.
Monday night..Clear. Low 11.

Sarnia - Petrolia - Western Lambton County.
Tonight..Clear. Fog patches developing after midnight. Low 13.
Monday..Mainly sunny. Fog patches dissipating in the morning.
 High 27. Humidex 30. UV index 7 or high.
Monday night..Clear. Low 11.

Watford - Pinery Park - Eastern Lambton County.
Tonight..Partly cloudy. Clearing this evening. Fog patches developing
 after midnight. Low 13.
Monday..Sunny. Fog patches dissipating in the morning. High 27.
 Humidex 30. UV index 7 or high.
Monday night..Clear. Low 11.

Rodney - Shedden - Western Elgin County.
Tonight..Mainly cloudy. 30 percent chance of showers early this
 evening. Clearing near midnight. Fog patches developing after
 midnight. Low 14.
Monday..Sunny. Fog patches dissipating in the morning. High 26.
 Humidex 29. UV index 7 or high.
Monday night..Clear. Low 13.

St. Thomas - Aylmer - Eastern Elgin County.
Tonight..Mainly cloudy. 30 percent chance of showers early this
 evening. Clearing near midnight. Fog patches developing after
 midnight. Low 14.
Monday..Sunny. Fog patches dissipating in the morning. High 26.
 Humidex 29. UV index 7 or high.
Monday night..Clear. Low 13.

Strathroy - Komoka - Western Middlesex County.
Tonight..Partly cloudy. 30 percent chance of showers early this
 evening. Fog patches developing after midnight. Low 13.
Monday..Mainly sunny. Fog patches dissipating in the morning.
 High 27. Humidex 29. UV index 7 or high.
Monday night..Clear. Low 12.

London - Parkhill - Eastern Middlesex County.
Tonight..Partly cloudy. 30 percent chance of showers early this
 evening. Fog patches developing after midnight. Low 13.
Monday..Sunny. Fog patches dissipating in the morning. High 27.
 Humidex 29. UV index 7 or high.
Monday night..Clear. Low 12.

Simcoe - Delhi - Norfolk.
Tonight..Mainly cloudy. 30 percent chance of showers early this
 evening. Clearing near midnight. Fog patches developing after
 midnight. Low 11.
Monday..Sunny. Fog patches dissipating in the morning. High 26.
 Humidex 29. UV index 7 or high.
Monday night..Clear. Low 11.

Dunnville - Caledonia - Haldimand.
Tonight..Mainly cloudy with 30 percent chance of showers early this
 evening. Clearing this evening. Fog patches developing after
 midnight. Low 12.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 29. UV index 7 or high.
Monday night..Clear. Low 13.

Woodstock - Tillsonburg - Oxford County.
Tonight..Partly cloudy with 30 percent chance of showers early this
 evening. Clearing this evening. Fog patches developing after
 midnight. Low 12.
Monday..Sunny. Fog patches dissipating in the morning. High 26.
 Humidex 29. UV index 7 or high.
Monday night..Clear. Low 12.

Brantford - County of Brant.
Tonight..Partly cloudy with 30 percent chance of showers early this
 evening. Clearing this evening. Fog patches developing after
 midnight. Low 12.
Monday..Sunny. Fog patches dissipating in the morning. High 26.
 Humidex 29. UV index 7 or high.
Monday night..Clear. Low 12.

Niagara Falls - Welland - Southern Niagara Region.
Tonight..Partly cloudy with 30 percent chance of showers early this
 evening. Otherwise clear. Fog patches developing after midnight.
 Low 16.
Monday..Sunny. Fog patches dissipating in the morning. High 24.
 Humidex 28. UV index 7 or high.
Monday night..Clear. Low 17.

St. Catharines - Grimsby - Northern Niagara Region.
Tonight..Partly cloudy. 30 percent chance of showers early this
 evening. Fog patches developing after midnight. Low 12.
Monday..A mix of sun and cloud. Becoming sunny late in the morning.
 Fog patches dissipating in the morning. Wind becoming northeast
 20 km/h in the afternoon. High 24. Humidex 29. UV index 6 or high.
Monday night..Clear. Low 12.

City of Hamilton.
Tonight..Partly cloudy. 30 percent chance of showers early this
 evening. Fog patches developing after midnight. Low 12.
Monday..A mix of sun and cloud. Becoming sunny late in the morning.
 Fog patches dissipating in the morning. High 23. Humidex 28. UV
 index 7 or high.
Monday night..Clear. Low 13.

Burlington - Oakville.
Tonight..Partly cloudy. 30 percent chance of showers early this
 evening. Low 11.
Monday..Mainly cloudy. Clearing late in the morning. High 24. Humidex
 27. UV index 7 or high.
Monday night..Clear. Low 11.

Halton Hills - Milton.
Tonight..Partly cloudy. 30 percent chance of showers early this
 evening. Low 11.
Monday..A mix of sun and cloud. Clearing late in the morning.
 High 24. Humidex 27. UV index 7 or high.
Monday night..Clear. Low 11.

Mississauga - Brampton.
Tonight..Partly cloudy. 30 percent chance of showers early this
 evening. Wind northeast 20 km/h becoming light early this evening.
 Low 11.
Monday..A mix of sun and cloud. Clearing late in the morning.
 High 24. Humidex 27. UV index 7 or high.
Monday night..Clear. Low 11.

Caledon.
Tonight..Partly cloudy with 30 percent chance of showers early this
 evening. Otherwise clear. Fog patches developing after midnight.
 Low 11.
Monday..Sunny. Fog patches dissipating in the morning. High 24.
 Humidex 27. UV index 7 or high.
Monday night..Clear. Low 11.

Vaughan - Richmond Hill - Markham.
Tonight..Partly cloudy with 30 percent chance of showers early this
 evening. Otherwise clear. Low 11.
Monday..Sunny. High 25. Humidex 28. UV index 7 or high.
Monday night..Clear. Low 9.

Newmarket - Georgina - Northern York Region.
Tonight..Partly cloudy with 30 percent chance of showers early this
 evening. Otherwise clear. Fog patches developing after midnight.
 Low 11.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 28. UV index 7 or high.
Monday night..Clear. Low 9.

Pickering - Oshawa - Southern Durham Region.
Tonight..Partly cloudy with 30 percent chance of showers early this
 evening. Otherwise clear. Low 11.
Monday..Sunny. High 25. Humidex 28. UV index 7 or high.
Monday night..Clear. Low 9.

Uxbridge - Beaverton - Northern Durham Region.
Tonight..Partly cloudy with 30 percent chance of showers early this
 evening. Otherwise clear. Fog patches developing after midnight.
 Low 11.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 28. UV index 7 or high.
Monday night..Clear. Low 9.

Goderich - Bluewater - Southern Huron County.
Tonight..Partly cloudy with 30 percent chance of showers early this
 evening. Otherwise clear. Fog patches developing after midnight.
 Wind becoming east 20 km/h late this evening. Low 11.
Monday..Mainly sunny. Fog patches dissipating in the morning.
 High 27. Humidex 30. UV index 6 or high.
Monday night..Clear. Low 10.

Wingham - Blyth - Northern Huron County.
Tonight..Partly cloudy with 30 percent chance of showers early this
 evening. Clearing this evening. Fog patches developing after
 midnight. Low 11.
Monday..Mainly sunny. Fog patches dissipating in the morning.
 High 27. Humidex 30. UV index 6 or high.
Monday night..Clear. Low 10.

Stratford - Mitchell - Southern Perth County.
Tonight..Partly cloudy. 30 percent chance of showers early this
 evening. Fog patches developing after midnight. Low 11.
Monday..Sunny. Fog patches dissipating in the morning. High 27.
 Humidex 30. UV index 6 or high.
Monday night..Clear. Low 10.

Listowel - Milverton - Northern Perth County.
Tonight..Partly cloudy. 30 percent chance of showers early this
 evening. Fog patches developing after midnight. Low 11.
Monday..Sunny. Fog patches dissipating in the morning. High 27.
 Humidex 30. UV index 6 or high.
Monday night..Clear. Low 10.

Kitchener - Cambridge - Region of Waterloo.
Tonight..Partly cloudy. 30 percent chance of showers early this
 evening. Clearing this evening. Fog patches developing after
 midnight. Low 10.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 27. UV index 7 or high.
Monday night..Clear. Low 11.

Guelph - Erin - Southern Wellington County.
Tonight..Mainly cloudy with 30 percent chance of showers early this
 evening. Clearing this evening. Fog patches developing after
 midnight. Low 10.
Monday..A mix of sun and cloud. Becoming sunny late in the morning.
 Fog patches dissipating in the morning. High 25. Humidex 27. UV
 index 7 or high.
Monday night..Clear. Low 11.

Mount Forest - Arthur - Northern Wellington County.
Tonight..Partly cloudy with 30 percent chance of showers early this
 evening. Clearing this evening. Fog patches developing after
 midnight. Low 10.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 27. UV index 7 or high.
Monday night..Clear. Low 11.

Orangeville - Grand Valley - Southern Dufferin County.
Tonight..Partly cloudy with 30 percent chance of showers early this
 evening. Clearing this evening. Fog patches developing after
 midnight. Low 9.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 30. UV index 7 or high.
Monday night..Clear. Low 8.

Shelburne - Mansfield - Northern Dufferin County.
Tonight..Partly cloudy. Becoming clear this evening. Fog patches
 developing after midnight. Low 9.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 30. UV index 7 or high.
Monday night..Clear. Low 8.

Innisfil - New Tecumseth - Angus.
Tonight..Partly cloudy with 30 percent chance of showers early this
 evening. Otherwise clear. Fog patches developing after midnight.
 Low 9.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 30. UV index 7 or high.
Monday night..Clear. Low 8.

Saugeen Shores - Kincardine - Southern Bruce County.
Tonight..Clear. Fog patches developing after midnight. Low 11.
Monday..Mainly sunny. Fog patches dissipating in the morning.
 High 26. Humidex 29. UV index 6 or high.
Monday night..Clear. Low 10.

Bruce Peninsula - Sauble Beach - Tobermory.
Tonight..Clear. Fog patches developing after midnight. Low 11.
Monday..Sunny. Fog patches dissipating in the morning. High 26.
 Humidex 29. UV index 6 or high.
Monday night..Clear. Low 10.

Hanover - Dundalk - Southern Grey County.
Tonight..Clearing early this evening. Fog patches developing after
 midnight. Low 11.
Monday..Sunny. Fog patches dissipating in the morning. High 26.
 Humidex 29. UV index 6 or high.
Monday night..Clear. Low 10.

Owen Sound - Blue Mountains - Northern Grey County.
Tonight..Clear. Fog patches developing after midnight. Low 11.
Monday..Sunny. Fog patches dissipating in the morning. High 26.
 Humidex 29. UV index 6 or high.
Monday night..Clear. Low 10.

Barrie - Collingwood - Hillsdale.
Tonight..Clear. Fog patches developing after midnight. Low 10.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 28. UV index 6 or high.
Monday night..Clear. Low 10.

Midland - Coldwater - Orr Lake.
Tonight..Clear. Fog patches developing after midnight. Low 10.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 28. UV index 6 or high.
Monday night..Clear. Low 10.

Orillia - Lagoon City - Washago.
Tonight..Clear. Fog patches developing after midnight. Low 10.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 28. UV index 6 or high.
Monday night..Clear. Low 10.

Cobourg - Colborne - Western Northumberland County.
Tonight..Partly cloudy with 30 percent chance of showers early this
 evening. Otherwise clear. Fog patches developing after midnight.
 Low 10.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 28. UV index 6 or high.
Monday night..Clear. Low 11.

Belleville - Quinte West - Eastern Northumberland County.
Tonight..Partly cloudy with 30 percent chance of showers early this
 evening. Otherwise clear. Fog patches developing after midnight.
 Low 10.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 28. UV index 6 or high.
Monday night..Clear. Low 11.

Picton - Sandbanks Park.
Tonight..Partly cloudy with 30 percent chance of showers early this
 evening. Otherwise clear. Fog patches developing after midnight.
 Low 10.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 28. UV index 6 or high.
Monday night..Clear. Low 11.

Napanee - Consecon.
Tonight..Partly cloudy with 30 percent chance of showers early this
 evening. Otherwise clear. Fog patches developing after midnight.
 Low 10.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 28. UV index 6 or high.
Monday night..Clear. Low 11.

Kingston - Odessa - Frontenac Islands.
Tonight..Clear. Fog patches developing after midnight. Low 10.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 28. UV index 6 or high.
Monday night..Clear. Low 11.

Lindsay - Southern Kawartha Lakes.
Tonight..Partly cloudy with 30 percent chance of showers early this
 evening. Otherwise clear. Fog patches developing after midnight.
 Low 9.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 27. UV index 6 or high.
Monday night..Clear. Low 7.

Fenelon Falls - Balsam Lake Park - Northern Kawartha Lakes.
Tonight..Clear. Fog patches developing after midnight. Low 9.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 27. UV index 6 or high.
Monday night..Clear. Low 7.

Peterborough City - Lakefield - Southern Peterborough County.
Tonight..Partly cloudy with 30 percent chance of showers early this
 evening. Otherwise clear. Fog patches developing after midnight.
 Low 9.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 27. UV index 6 or high.
Monday night..Clear. Low 7.

Apsley - Woodview - Northern Peterborough County.
Tonight..Clear. Fog patches developing after midnight. Low 9.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 27. UV index 6 or high.
Monday night..Clear. Low 7.

Stirling - Tweed - Madoc.
Tonight..Clear. Fog patches developing after midnight. Low 10.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 27. UV index 6 or high.
Monday night..Clear. Low 10.

Tamworth - Sydenham - South Frontenac.
Tonight..Clear. Fog patches developing after midnight. Low 10.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 27. UV index 6 or high.
Monday night..Clear. Low 10.

Kaladar - Bannockburn - Bon Echo Park.
Tonight..Clear. Fog patches developing after midnight. Low plus 5.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 27. UV index 6 or high.
Monday night..Clear. Low 6.

Bancroft - Hastings Highlands - Denbigh.
Tonight..Clear. Fog patches developing after midnight. Low plus 5.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 27. UV index 6 or high.
Monday night..Clear. Low 6.

Gananoque - Mallorytown.
Tonight..Clear. Fog patches developing after midnight. Low 10.
Monday..A mix of sun and cloud. Becoming sunny in the morning. Fog
 patches dissipating in the morning. High 25. Humidex 28. UV index 6
 or high.
Monday night..Clear. Low 9.

Brockville - Prescott.
Tonight..Clear. Fog patches developing after midnight. Low 10.
Monday..Clearing in the morning. Fog patches dissipating in the
 morning. High 25. Humidex 28. UV index 6 or high.
Monday night..Clear. Low 9.

Westport - Charleston Lake.
Tonight..Clear. Fog patches developing after midnight. Low 10.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 28. UV index 6 or high.
Monday night..Clear. Low 9.

Merrickville-Wolford - Kemptville.
Tonight..Clear. Fog patches developing after midnight. Low 10.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 28. UV index 6 or high.
Monday night..Clear. Low 9.

Ottawa North - Kanata - Orl�ans.
Tonight..Clear. Fog patches developing after midnight. Low 9.
Monday..Sunny. Fog patches dissipating in the morning. High 24.
 Humidex 27. UV index 6 or high.
Monday night..Clear. Low 8.

Ottawa South - Richmond - Metcalfe.
Tonight..Clear. Fog patches developing after midnight. Low 9.
Monday..Sunny. Fog patches dissipating in the morning. High 24.
 Humidex 27. UV index 6 or high.
Monday night..Clear. Low 8.

Gatineau.
Tonight..Clear. Fog patches developing after midnight. Low 10.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 27. UV index 6 or high.
Monday night..Clear. Low 9.

Prescott and Russell.
Tonight..Clear. Fog patches developing after midnight. Low 10.
Monday..Sunny. Fog patches dissipating in the morning. High 24.
 Humidex 26. UV index 6 or high.
Monday night..Clear. Low 8.

Morrisburg - Long Sault.
Tonight..Clear. Fog patches developing after midnight. Low 9.
Monday..Clearing in the morning. Fog patches dissipating in the
 morning. High 24. Humidex 27. UV index 6 or high.
Monday night..Clear. Low 7.

Cornwall - Lancaster.
Tonight..Clear. Fog patches developing after midnight. Low 9.
Monday..Sunny. Fog patches dissipating in the morning. High 24.
 Humidex 27. UV index 6 or high.
Monday night..Clear. Low 7.

Winchester - Newington.
Tonight..Clear. Fog patches developing after midnight. Low 9.
Monday..Sunny. Fog patches dissipating in the morning. High 24.
 Humidex 27. UV index 6 or high.
Monday night..Clear. Low 7.

Maxville - Alexandria.
Tonight..Clear. Fog patches developing after midnight. Low 9.
Monday..Sunny. Fog patches dissipating in the morning. High 24.
 Humidex 27. UV index 6 or high.
Monday night..Clear. Low 7.

Plevna - Sharbot Lake - Western Lanark County.
Tonight..Clear. Fog patches developing after midnight. Low 9.
Monday..Sunny. Fog patches dissipating in the morning. High 24.
 Humidex 26. UV index 6 or high.
Monday night..Clear. Low 9.

Smiths Falls - Perth - Eastern Lanark County.
Tonight..Clear. Fog patches developing after midnight. Low 9.
Monday..Sunny. Fog patches dissipating in the morning. High 24.
 Humidex 26. UV index 6 or high.
Monday night..Clear. Low 9.

Port Carling - Port Severn.
Tonight..Clear. Fog patches developing after midnight. Low 11.
Monday..Sunny. Fog patches dissipating in the morning. High 24.
 Humidex 27. UV index 6 or high.
Monday night..Clear. Fog patches developing after midnight. Low 11.

Bracebridge - Gravenhurst.
Tonight..Clear. Fog patches developing after midnight. Low 8.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 28. UV index 6 or high.
Monday night..Clear. Fog patches developing after midnight. Low 8.

Town of Parry Sound - Rosseau - Killbear Park.
Tonight..Clear. Fog patches developing after midnight. Low 8.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 28. UV index 6 or high.
Monday night..Clear. Fog patches developing after midnight. Low 8.

Huntsville - Baysville.
Tonight..Clear. Fog patches developing after midnight. Low 8.
Monday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 28. UV index 6 or high.
Monday night..Clear. Fog patches developing after midnight. Low 8.

Haliburton - Minden - Southern Haliburton County.
Tonight..Clear. Fog patches developing after midnight. Low 7.
Monday..Sunny. Fog patches dissipating in the morning. High 23.
 Humidex 25. UV index 6 or high.
Monday night..Clear. Low 9.

Oxtongue Lake - Fort Irwin - Northern Haliburton County.
Tonight..Clear. Fog patches developing after midnight. Low 6.
Monday..Sunny. Fog patches dissipating in the morning. High 23.
 Humidex 25. UV index 6 or high.
Monday night..Clear. Low 9.

Barry's Bay - Killaloe.
Tonight..Clear. Fog patches developing after midnight. Low 9.
Monday..Sunny. Fog patches dissipating in the morning. High 23.
 Humidex 25. UV index 6 or high.
Monday night..Clear. Low 8.

Renfrew - Arnprior - Calabogie.
Tonight..Clear. Fog patches developing after midnight. Low 9.
Monday..Sunny. Fog patches dissipating in the morning. High 23.
 Humidex 25. UV index 6 or high.
Monday night..Clear. Low 8.

Petawawa - Pembroke - Cobden.
Tonight..Clear. Fog patches developing after midnight. Low 9.
Monday..Sunny. Fog patches dissipating in the morning. High 23.
 Humidex 25. UV index 6 or high.
Monday night..Clear. Low 8.

Western Algonquin Park - Lake of Two Rivers.
Tonight..Clear. Fog patches developing after midnight. Low plus 5.
Monday..Sunny. Fog patches dissipating in the morning. High 23.
 Humidex 25. UV index 6 or high.
Monday night..Clear. Low plus 5.

Deep River - Whitney - Eastern Algonquin Park.
Tonight..Clear. Fog patches developing after midnight. Low plus 5.
Monday..Sunny. Fog patches dissipating in the morning. High 23.
 Humidex 25. UV index 6 or high.
Monday night..Clear. Low plus 5.

Bayfield Inlet - Dunchurch.
Tonight..Clear. Fog patches developing after midnight. Low 8.
Monday..Sunny. Fog patches dissipating in the morning. High 24.
 Humidex 27. UV index 6 or high.
Monday night..Clear. Fog patches developing after midnight. Low 9.

South River - Burk's Falls.
Tonight..Clear. Fog patches developing after midnight. Low 8.
Monday..Sunny. Fog patches dissipating in the morning. High 24.
 Humidex 27. UV index 6 or high.
Monday night..Clear. Fog patches developing after midnight. Low 9.

End
$$$$^^

--- up 3 days, 18 hours, 10 minutes
 * Origin: Northern Realms (618:400/23)