FPCN11 CWTO 171930
Forecasts for Southern Ontario and the National Capital Region issued
by Environment Canada at 3:30 p.m. EDT Tuesday 17 September 2024 for
tonight Wednesday and Wednesday night.
The next scheduled forecast will be issued at 5:00 a.m. EDT
Wednesday.

City of Toronto.
Tonight..A few clouds. Low 15.
Wednesday..Mainly sunny. High 26. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Low 16.

Windsor - Leamington - Essex County.
Tonight..A few clouds. Low 16.
Wednesday..Mainly sunny. High 25. Humidex 30. UV index 6 or high.
Wednesday night..A few clouds. Low 15.

Chatham-Kent - Rondeau Park.
Tonight..A few clouds. Low 16.
Wednesday..Mainly sunny. High 25. Humidex 30. UV index 6 or high.
Wednesday night..A few clouds. Low 15.

Sarnia - Petrolia - Western Lambton County.
Tonight..A few clouds. Low 13.
Wednesday..Mainly sunny. High 26. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing before morning.
 Low 13.

Watford - Pinery Park - Eastern Lambton County.
Tonight..A few clouds. Low 13.
Wednesday..Mainly sunny. High 26. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing before morning.
 Low 13.

Rodney - Shedden - Western Elgin County.
Tonight..A few clouds. Low 15.
Wednesday..Mainly sunny. High 26. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Low 13.

St. Thomas - Aylmer - Eastern Elgin County.
Tonight..A few clouds. Fog patches developing overnight. Low 15.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 26. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Low 13.

Strathroy - Komoka - Western Middlesex County.
Tonight..A few clouds. Low 13.
Wednesday..Mainly sunny. High 26. Humidex 30. UV index 6 or high.
Wednesday night..A few clouds. Low 13.

London - Parkhill - Eastern Middlesex County.
Tonight..A few clouds. Low 13.
Wednesday..Mainly sunny. High 27. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Low 13.

Simcoe - Delhi - Norfolk.
Tonight..A few clouds. Fog patches developing overnight. Low 14.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 26. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Low 12.

Dunnville - Caledonia - Haldimand.
Tonight..A few clouds. Fog patches developing overnight. Low 13.
Wednesday..A mix of sun and cloud. Fog patches dissipating in the
 morning. High 26. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 14.

Woodstock - Tillsonburg - Oxford County.
Tonight..A few clouds. Fog patches developing overnight. Low 12.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 25. Humidex 29. UV index 6 or high.
Wednesday night..A few clouds. Low 12.

Brantford - County of Brant.
Tonight..A few clouds. Fog patches developing overnight. Low 12.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 25. Humidex 29. UV index 6 or high.
Wednesday night..A few clouds. Low 12.

Niagara Falls - Welland - Southern Niagara Region.
Tonight..A few clouds. Fog patches developing overnight. Low 17.
Wednesday..A mix of sun and cloud. Fog patches dissipating in the
 morning. High 25. Humidex 30. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 16.

St. Catharines - Grimsby - Northern Niagara Region.
Tonight..A few clouds. Fog patches developing overnight. Low 17.
Wednesday..A mix of sun and cloud. Fog patches dissipating in the
 morning. High 25. Humidex 30. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 14.

City of Hamilton.
Tonight..A few clouds. Fog patches developing overnight. Low 14.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 25. Humidex 30. UV index 6 or high.
Wednesday night..A few clouds. Low 15.

Burlington - Oakville.
Tonight..A few clouds. Fog patches developing overnight. Low 15.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 26. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Low 14.

Halton Hills - Milton.
Tonight..A few clouds. Fog patches developing overnight. Low 13.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 26. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Low 14.

Mississauga - Brampton.
Tonight..A few clouds. Fog patches developing overnight. Low 14.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 26. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Low 14.

Caledon.
Tonight..A few clouds. Fog patches developing overnight. Low 13.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 26. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Low 14.

Vaughan - Richmond Hill - Markham.
Tonight..A few clouds. Low 14.
Wednesday..Mainly sunny. High 26. Humidex 30. UV index 6 or high.
Wednesday night..A few clouds. Low 12.

Newmarket - Georgina - Northern York Region.
Tonight..A few clouds. Fog patches developing overnight. Low 12.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 26. Humidex 30. UV index 6 or high.
Wednesday night..A few clouds. Low 12.

Pickering - Oshawa - Southern Durham Region.
Tonight..A few clouds. Low 14.
Wednesday..Mainly sunny. High 26. Humidex 30. UV index 6 or high.
Wednesday night..A few clouds. Low 12.

Uxbridge - Beaverton - Northern Durham Region.
Tonight..A few clouds. Fog patches developing overnight. Low 14.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 26. Humidex 30. UV index 6 or high.
Wednesday night..A few clouds. Low 12.

Goderich - Bluewater - Southern Huron County.
Tonight..A few clouds. Low 12.
Wednesday..Mainly sunny. High 27. Humidex 29. UV index 6 or high.
Wednesday night..A few clouds. Low 12.

Wingham - Blyth - Northern Huron County.
Tonight..A few clouds. Low 12.
Wednesday..Mainly sunny. High 27. Humidex 29. UV index 6 or high.
Wednesday night..A few clouds. Low 12.

Stratford - Mitchell - Southern Perth County.
Tonight..Clear. Low 12.
Wednesday..Sunny. High 27. Humidex 29. UV index 6 or high.
Wednesday night..Clear. Fog patches developing before morning.
 Low 12.

Listowel - Milverton - Northern Perth County.
Tonight..Clear. Low 12.
Wednesday..Sunny. High 27. Humidex 29. UV index 6 or high.
Wednesday night..Clear. Low 12.

Kitchener - Cambridge - Region of Waterloo.
Tonight..A few clouds. Fog patches developing overnight. Low 11.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 26. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing before morning.
 Low 12.

Guelph - Erin - Southern Wellington County.
Tonight..A few clouds. Fog patches developing overnight. Low 11.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 26. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing before morning.
 Low 12.

Mount Forest - Arthur - Northern Wellington County.
Tonight..Clear. Low 12.
Wednesday..Sunny. High 26. Humidex 29. UV index 6 or high.
Wednesday night..Clear. Low 12.

Orangeville - Grand Valley - Southern Dufferin County.
Tonight..Clear. Fog patches developing overnight. Low 13.
Wednesday..Sunny. Fog patches dissipating in the morning. High 25.
 Humidex 30. UV index 6 or high.
Wednesday night..Clear. Low 12.

Shelburne - Mansfield - Northern Dufferin County.
Tonight..Clear. Low 13.
Wednesday..Sunny. High 25. Humidex 30. UV index 6 or high.
Wednesday night..Clear. Low 12.

Innisfil - New Tecumseth - Angus.
Tonight..Clear. Fog patches developing overnight. Low 12.
Wednesday..Sunny. Fog patches dissipating in the morning. High 26.
 Humidex 31. UV index 6 or high.
Wednesday night..Clear. Low 11.

Saugeen Shores - Kincardine - Southern Bruce County.
Tonight..Clear. Low 13.
Wednesday..Sunny. High 27. Humidex 29. UV index 6 or high.
Wednesday night..Clear. Low 12.

Bruce Peninsula - Sauble Beach - Tobermory.
Tonight..Clear. Low 13.
Wednesday..Sunny. High 27. Humidex 29. UV index 6 or high.
Wednesday night..Clear. Low 12.

Hanover - Dundalk - Southern Grey County.
Tonight..Clear. Low 13.
Wednesday..Sunny. High 27. Humidex 29. UV index 6 or high.
Wednesday night..Clear. Low 12.

Owen Sound - Blue Mountains - Northern Grey County.
Tonight..Clear. Low 13.
Wednesday..Sunny. High 28. Humidex 30. UV index 6 or high.
Wednesday night..Clear. Low 12.

Barrie - Collingwood - Hillsdale.
Tonight..Clear. Low 13.
Wednesday..Sunny. High 26. Humidex 30. UV index 6 or high.
Wednesday night..Clear. Low 12.

Midland - Coldwater - Orr Lake.
Tonight..Clear. Low 13.
Wednesday..Sunny. High 26. Humidex 30. UV index 6 or high.
Wednesday night..Clear. Low 12.

Orillia - Lagoon City - Washago.
Tonight..Clear. Fog patches developing overnight. Low 13.
Wednesday..Sunny. Fog patches dissipating in the morning. High 26.
 Humidex 30. UV index 6 or high.
Wednesday night..Clear. Fog patches developing overnight. Low 12.

Cobourg - Colborne - Western Northumberland County.
Tonight..A few clouds. Low 14.
Wednesday..A mix of sun and cloud. High 26. Humidex 31. UV index 6 or
 high.
Wednesday night..A few clouds. Low 13.

Belleville - Quinte West - Eastern Northumberland County.
Tonight..A few clouds. Fog patches developing overnight. Low 14.
Wednesday..A mix of sun and cloud. Fog patches dissipating in the
 morning. High 26. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Low 13.

Picton - Sandbanks Park.
Tonight..A few clouds. Fog patches developing overnight. Low 14.
Wednesday..A mix of sun and cloud. Fog patches dissipating in the
 morning. High 26. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Low 13.

Napanee - Consecon.
Tonight..A few clouds. Fog patches developing overnight. Low 14.
Wednesday..A mix of sun and cloud. Fog patches dissipating in the
 morning. High 26. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Low 13.

Kingston - Odessa - Frontenac Islands.
Tonight..A few clouds. Fog patches developing overnight. Low 14.
Wednesday..A mix of sun and cloud. Fog patches dissipating in the
 morning. High 26. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Low 13.

Lindsay - Southern Kawartha Lakes.
Tonight..A few clouds. Fog patches developing overnight. Low 11.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 27. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 10.

Fenelon Falls - Balsam Lake Park - Northern Kawartha Lakes.
Tonight..A few clouds. Fog patches developing overnight. Low 11.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 27. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 9.

Peterborough City - Lakefield - Southern Peterborough County.
Tonight..A few clouds. Fog patches developing overnight. Low 11.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 27. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 10.

Apsley - Woodview - Northern Peterborough County.
Tonight..A few clouds. Fog patches developing overnight. Low 11.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 27. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 9.

Stirling - Tweed - Madoc.
Tonight..A few clouds. Fog patches developing overnight. Low 14.
Wednesday..A mix of sun and cloud. Fog patches dissipating in the
 morning. High 27. Humidex 32. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 12.

Tamworth - Sydenham - South Frontenac.
Tonight..A few clouds. Fog patches developing overnight. Low 14.
Wednesday..A mix of sun and cloud. Fog patches dissipating in the
 morning. High 27. Humidex 32. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 12.

Kaladar - Bannockburn - Bon Echo Park.
Tonight..A few clouds. Fog patches developing overnight. Low 10.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 27. Humidex 32. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 9.

Bancroft - Hastings Highlands - Denbigh.
Tonight..A few clouds. Fog patches developing overnight. Low 9.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 27. Humidex 32. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 8.

Gananoque - Mallorytown.
Tonight..A few clouds. Fog patches developing overnight. Low 12.
Wednesday..A mix of sun and cloud. Fog patches dissipating in the
 morning. High 27. Humidex 32. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 13.

Brockville - Prescott.
Tonight..A few clouds. Fog patches developing overnight. Low 12.
Wednesday..A mix of sun and cloud. Fog patches dissipating in the
 morning. High 27. Humidex 32. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 13.

Westport - Charleston Lake.
Tonight..A few clouds. Fog patches developing overnight. Low 12.
Wednesday..A mix of sun and cloud. Fog patches dissipating in the
 morning. High 27. Humidex 32. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 13.

Merrickville-Wolford - Kemptville.
Tonight..A few clouds. Fog patches developing overnight. Low 12.
Wednesday..A mix of sun and cloud. Fog patches dissipating in the
 morning. High 27. Humidex 32. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 13.

Ottawa North - Kanata - Orl�ans.
Tonight..A few clouds. Fog patches developing overnight. Low 12.
Wednesday..A mix of sun and cloud. Fog patches dissipating in the
 morning. High 28. Humidex 32. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 12.

Ottawa South - Richmond - Metcalfe.
Tonight..A few clouds. Fog patches developing overnight. Low 12.
Wednesday..A mix of sun and cloud. Fog patches dissipating in the
 morning. High 28. Humidex 32. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 12.

Gatineau.
Tonight..A few clouds. Fog patches developing overnight. Low 13.
Wednesday..A mix of sun and cloud. Fog patches dissipating in the
 morning. High 28. Humidex 32. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 14.

Prescott and Russell.
Tonight..A few clouds. Low 11.
Wednesday..A mix of sun and cloud. High 28. Humidex 33. UV index 6 or
 high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 13.

Morrisburg - Long Sault.
Tonight..A few clouds. Low 11.
Wednesday..A mix of sun and cloud. High 28. Humidex 33. UV index 6 or
 high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 12.

Cornwall - Lancaster.
Tonight..A few clouds. Low 11.
Wednesday..A mix of sun and cloud. High 28. Humidex 33. UV index 6 or
 high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 12.

Winchester - Newington.
Tonight..A few clouds. Low 11.
Wednesday..A mix of sun and cloud. High 28. Humidex 33. UV index 6 or
 high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 12.

Maxville - Alexandria.
Tonight..A few clouds. Low 11.
Wednesday..A mix of sun and cloud. High 28. Humidex 33. UV index 6 or
 high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 12.

Plevna - Sharbot Lake - Western Lanark County.
Tonight..A few clouds. Fog patches developing overnight. Low 13.
Wednesday..A mix of sun and cloud. Fog patches dissipating in the
 morning. High 28. Humidex 32. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 11.

Smiths Falls - Perth - Eastern Lanark County.
Tonight..A few clouds. Fog patches developing overnight. Low 13.
Wednesday..A mix of sun and cloud. Fog patches dissipating in the
 morning. High 28. Humidex 32. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 11.

Port Carling - Port Severn.
Tonight..A few clouds. Fog patches developing overnight. Low 11.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 27. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 9.

Bracebridge - Gravenhurst.
Tonight..Clear. Fog patches developing overnight. Low 11.
Wednesday..Sunny. Fog patches dissipating in the morning. High 27.
 Humidex 31. UV index 6 or high.
Wednesday night..Clear. Fog patches developing overnight. Low 9.

Town of Parry Sound - Rosseau - Killbear Park.
Tonight..Clear. Fog patches developing overnight. Low 11.
Wednesday..Sunny. Fog patches dissipating in the morning. High 27.
 Humidex 31. UV index 5 or moderate.
Wednesday night..Clear. Fog patches developing overnight. Low 12.

Huntsville - Baysville.
Tonight..Clear. Fog patches developing overnight. Low 11.
Wednesday..Sunny. Fog patches dissipating in the morning. High 27.
 Humidex 31. UV index 5 or moderate.
Wednesday night..Clear. Fog patches developing overnight. Low 12.

Haliburton - Minden - Southern Haliburton County.
Tonight..Clear. Fog patches developing overnight. Low 10.
Wednesday..Sunny. Fog patches dissipating in the morning. High 27.
 Humidex 31. UV index 6 or high.
Wednesday night..Clear. Fog patches developing overnight. Low 8.

Oxtongue Lake - Fort Irwin - Northern Haliburton County.
Tonight..Clear. Fog patches developing overnight. Low 8.
Wednesday..Sunny. Fog patches dissipating in the morning. High 27.
 Humidex 31. UV index 6 or high.
Wednesday night..Clear. Fog patches developing overnight. Low 8.

Barry's Bay - Killaloe.
Tonight..A few clouds. Fog patches developing overnight. Low 9.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 27. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 11.

Renfrew - Arnprior - Calabogie.
Tonight..A few clouds. Fog patches developing overnight. Low 11.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 27. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 11.

Petawawa - Pembroke - Cobden.
Tonight..A few clouds. Fog patches developing overnight. Low 11.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 27. Humidex 31. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 11.

Western Algonquin Park - Lake of Two Rivers.
Tonight..A few clouds. Fog patches developing overnight. Low 7.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 26. Humidex 29. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 8.

Deep River - Whitney - Eastern Algonquin Park.
Tonight..A few clouds. Fog patches developing overnight. Low 7.
Wednesday..Mainly sunny. Fog patches dissipating in the morning.
 High 26. Humidex 29. UV index 6 or high.
Wednesday night..A few clouds. Fog patches developing overnight.
 Low 8.

Bayfield Inlet - Dunchurch.
Tonight..Clear. Fog patches developing overnight. Low 13.
Wednesday..Sunny. Fog patches dissipating in the morning. High 26.
 Humidex 29. UV index 6 or high.
Wednesday night..Clear. Fog patches developing overnight. Low 12.

South River - Burk's Falls.
Tonight..Clear. Fog patches developing overnight. Low 13.
Wednesday..Sunny. Fog patches dissipating in the morning. High 26.
 Humidex 29. UV index 6 or high.
Wednesday night..Clear. Fog patches developing overnight. Low 12.

End
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 * Origin: Northern Realms (618:400/23)