Subj : Southern Ontario Weather
To   : All
From : Northern Realms
Date : Tue Sep 30 2025 15:35:00

FPCN11 CWTO 301930
Forecasts for Southern Ontario and the National Capital Region issued
by Environment Canada at 3:30 p.m. EDT Tuesday 30 September 2025 for
tonight Wednesday and Wednesday night.
The next scheduled forecast will be issued at 5:00 a.m. EDT
Wednesday.

City of Toronto.
Tonight..Clear. Wind becoming northeast 20 km/h gusting to 40 this
 evening. Low 8.
Wednesday..Sunny. Wind northeast 20 km/h becoming light late in the
 morning. High 17. UV index 6 or high.
Wednesday night..Clear. Low 8.

Windsor - Leamington - Essex County.
Tonight..Clear. Wind northeast 20 km/h becoming light this evening.
 Low 9.
Wednesday..Sunny. Wind becoming northeast 20 km/h gusting to 40 in
 the morning. High 21. UV index 6 or high.
Wednesday night..Clear. Low 11.

Chatham-Kent - Rondeau Park.
Tonight..Clear. Wind becoming northeast 20 km/h this evening. Low 7.
Wednesday..Sunny. Wind east 20 km/h gusting to 40. High 20. UV
 index 6 or high.
Wednesday night..Clear. Wind east 20 km/h becoming light near
 midnight. Low 8.

Sarnia - Petrolia - Western Lambton County.
Tonight..Clear. Wind north 30 km/h becoming light this evening.
 Low 7.
Wednesday..Sunny. Wind east 20 km/h. High 20. UV index 6 or high.
Wednesday night..Clear. Wind northeast 20 km/h becoming light in the
 evening. Low 8.

Watford - Pinery Park - Eastern Lambton County.
Tonight..Clear. Wind northeast 20 km/h becoming light this evening.
 Low 7.
Wednesday..Sunny. Wind becoming northeast 20 km/h gusting to 40 in
 the morning. High 20. UV index 6 or high.
Wednesday night..Clear. Wind northeast 20 km/h becoming light in the
 evening. Low 8.

Rodney - Shedden - Western Elgin County.
Tonight..Clear. Wind east 20 km/h becoming light early this evening.
 Low 7.
Wednesday..Sunny. Wind becoming east 20 km/h gusting to 40 in the
 morning then light in the afternoon. High 20. UV index 6 or high.
Wednesday night..Clear. Low 8.

St. Thomas - Aylmer - Eastern Elgin County.
Tonight..Clear. Wind northeast 20 km/h becoming light this evening.
 Low 7.
Wednesday..Sunny. Wind becoming east 20 km/h gusting to 40 in the
 morning. High 20. UV index 6 or high.
Wednesday night..Clear. Low 8.

Strathroy - Komoka - Western Middlesex County.
Tonight..Clear. Low 7.
Wednesday..Sunny. Wind east 20 km/h becoming light in the afternoon.
 High 20. UV index 6 or high.
Wednesday night..Clear. Low 8.

London - Parkhill - Eastern Middlesex County.
Tonight..Clear. Low 7.
Wednesday..Sunny. Wind becoming east 20 km/h gusting to 40 in the
 morning. High 20. UV index 6 or high.
Wednesday night..Clear. Low 8.

Simcoe - Delhi - Norfolk.
Tonight..Clear. Wind northeast 20 km/h becoming light this evening.
 Low plus 5.
Wednesday..Sunny. Wind becoming northeast 20 km/h gusting to 40 in
 the morning. High 18. UV index 6 or high.
Wednesday night..Clear. Wind northeast 20 km/h becoming light in the
 evening. Low 6.

Dunnville - Caledonia - Haldimand.
Tonight..Clear. Wind northeast 20 km/h becoming light this evening.
 Low 7.
Wednesday..Sunny. Wind becoming northeast 20 km/h gusting to 40 in
 the morning. High 17. UV index 6 or high.
Wednesday night..Clear. Wind northeast 20 km/h becoming light in the
 evening. Low 7.

Woodstock - Tillsonburg - Oxford County.
Tonight..Clear. Wind east 20 km/h becoming light this evening. Low
 plus 5.
Wednesday..Sunny. Wind becoming northeast 20 km/h in the morning.
 High 18. UV index 6 or high.
Wednesday night..Clear. Low 6.

Brantford - County of Brant.
Tonight..Clear. Wind northeast 30 km/h becoming light this evening.
 Low plus 5.
Wednesday..Sunny. Wind becoming northeast 30 km/h in the morning.
 High 18. UV index 6 or high.
Wednesday night..Clear. Low 6.

Niagara Falls - Welland - Southern Niagara Region.
Tonight..Clear. Wind northeast 20 km/h becoming light this evening.
 Low 9.
Wednesday..Sunny. Wind becoming northeast 20 km/h gusting to 40 in
 the morning. High 17. UV index 6 or high.
Wednesday night..Clear. Wind northeast 20 km/h becoming light in the
 evening. Low 9.

St. Catharines - Grimsby - Northern Niagara Region.
Tonight..Clear. Wind northeast 20 km/h gusting to 40 becoming light
 this evening. Low 9.
Wednesday..A mix of sun and cloud. Becoming sunny late in the
 morning. Wind becoming northeast 30 km/h in the morning. High 17. UV
 index 6 or high.
Wednesday night..Clear. Wind east 20 km/h becoming light in the
 evening. Low 9.

City of Hamilton.
Tonight..Clear. Wind northeast 20 km/h gusting to 40 becoming light
 this evening. Low 9.
Wednesday..A mix of sun and cloud. Becoming sunny late in the
 morning. Wind becoming northeast 20 km/h gusting to 40 in the
 morning. High 17. UV index 6 or high.
Wednesday night..Clear. Wind northeast 20 km/h becoming light in the
 evening. Low 9.

Burlington - Oakville.
Tonight..Clear. Wind northeast 20 km/h gusting to 40 becoming light
 after midnight. Low 9.
Wednesday..Sunny. Wind becoming northeast 30 km/h in the morning then
 light in the afternoon. High 17. UV index 6 or high.
Wednesday night..Clear. Low 9.

Halton Hills - Milton.
Tonight..Clear. Wind east 20 km/h becoming light early this evening.
 Low 8.
Wednesday..Sunny. Wind becoming east 20 km/h in the afternoon.
 High 17. UV index 6 or high.
Wednesday night..Clear. Low 8.

Mississauga - Brampton.
Tonight..Clear. Low 8.
Wednesday..Sunny. High 17. UV index 6 or high.
Wednesday night..Clear. Low 8.

Caledon.
Tonight..Clear. Low plus 3 with risk of frost.
Wednesday..Sunny. High 18. UV index 6 or high.
Wednesday night..Clear. Low plus 5.

Vaughan - Richmond Hill - Markham.
Tonight..Clear. Low 8.
Wednesday..Sunny. Wind east 20 km/h becoming light late in the
 morning. High 17. UV index 6 or high.
Wednesday night..Clear. Low 8.

Newmarket - Georgina - Northern York Region.
Tonight..Clear. Low plus 4.
Wednesday..Sunny. High 17. UV index 6 or high.
Wednesday night..Clear. Low 7.

Pickering - Oshawa - Southern Durham Region.
Tonight..Clear. Low 8.
Wednesday..Sunny. Wind northeast 20 km/h becoming light late in the
 morning. High 17. UV index 6 or high.
Wednesday night..Clear. Low 8.

Uxbridge - Beaverton - Northern Durham Region.
Tonight..Clear. Low plus 4.
Wednesday..Sunny. High 17. UV index 6 or high.
Wednesday night..Clear. Low 7.

Goderich - Bluewater - Southern Huron County.
Tonight..Clear. Wind becoming east 20 km/h early this evening. Low
 plus 4.
Wednesday..Sunny. Wind east 20 km/h becoming light in the morning.
 High 19. UV index 6 or high.
Wednesday night..Clear. Wind east 20 km/h becoming light near
 midnight. Low 7.

Wingham - Blyth - Northern Huron County.
Tonight..Clear. Low plus 3 with risk of frost.
Wednesday..Sunny. Wind becoming east 20 km/h late in the morning.
 High 18. UV index 6 or high.
Wednesday night..Clear. Low plus 5.

Stratford - Mitchell - Southern Perth County.
Tonight..Clear. Low plus 4.
Wednesday..Sunny. Wind becoming east 20 km/h in the morning. High 19.
 UV index 6 or high.
Wednesday night..Clear. Low 7.

Listowel - Milverton - Northern Perth County.
Tonight..Clear. Low plus 3 with risk of frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h late in the
 morning. High 18. UV index 6 or high.
Wednesday night..Clear. Low plus 5.

Kitchener - Cambridge - Region of Waterloo.
Tonight..Clear. Wind east 20 km/h becoming light early this evening.
 Low plus 3 with risk of frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h late in the
 morning. High 18. UV index 6 or high.
Wednesday night..Clear. Low plus 5.

Guelph - Erin - Southern Wellington County.
Tonight..Clear. Wind east 20 km/h becoming light early this evening.
 Low plus 3 with risk of frost.
Wednesday..Sunny. Wind northeast 20 km/h becoming light in the
 afternoon. High 18. UV index 6 or high.
Wednesday night..Clear. Low plus 5.

Mount Forest - Arthur - Northern Wellington County.
Tonight..Clear. Low plus 3 with risk of frost.
Wednesday..Sunny. High 18. UV index 6 or high.
Wednesday night..Clear. Low 7.

Orangeville - Grand Valley - Southern Dufferin County.
Tonight..Clear. Low plus 3 with risk of frost.
Wednesday..Sunny. High 18. UV index 6 or high.
Wednesday night..Clear. Low 7.

Shelburne - Mansfield - Northern Dufferin County.
Tonight..Clear. Low plus 3 with risk of frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h late in the
 morning. High 18. UV index 6 or high.
Wednesday night..Clear. Low 7.

Innisfil - New Tecumseth - Angus.
Tonight..Clear. Low plus 4.
Wednesday..Sunny. High 17. UV index 6 or high.
Wednesday night..Clear. Low 7.

Saugeen Shores - Kincardine - Southern Bruce County.
Tonight..Clear. Wind northeast 20 km/h becoming light this evening.
 Low plus 3 with risk of frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h late in the
 morning. High 18. UV index 6 or high.
Wednesday night..Clear. Low 7.

Bruce Peninsula - Sauble Beach - Tobermory.
Tonight..Clear. Wind northeast 20 km/h gusting to 40. Low 6.
Wednesday..Sunny. High 16. UV index 6 or high.
Wednesday night..Clear. Low 8.

Hanover - Dundalk - Southern Grey County.
Tonight..Clear. Wind northeast 20 km/h becoming light this evening.
 Low plus 3 with risk of frost.
Wednesday..Sunny. High 18. UV index 6 or high.
Wednesday night..Clear. Low 7.

Owen Sound - Blue Mountains - Northern Grey County.
Tonight..Clear. Wind northeast 30 km/h becoming light after midnight.
 Low plus 3 with risk of frost.
Wednesday..Sunny. Wind east 20 km/h becoming light late in the
 morning. High 18. UV index 6 or high.
Wednesday night..Clear. Low 7.

Barrie - Collingwood - Hillsdale.
Tonight..Clear. Low plus 4.
Wednesday..Sunny. Wind east 20 km/h becoming light late in the
 morning. High 17. UV index 6 or high.
Wednesday night..Clear. Low 7.

Midland - Coldwater - Orr Lake.
Tonight..Clear. Wind becoming northeast 30 km/h early this evening.
 Low plus 4.
Wednesday..Sunny. Wind east 20 km/h becoming light late in the
 morning. High 17. UV index 6 or high.
Wednesday night..Clear. Low 7.

Orillia - Lagoon City - Washago.
Tonight..Clear. Wind becoming northeast 20 km/h early this evening.
 Low plus 4.
Wednesday..Sunny. Wind northeast 20 km/h becoming light late in the
 morning. High 17. UV index 6 or high.
Wednesday night..Clear. Wind east 20 km/h becoming light after
 midnight. Low 7.

Cobourg - Colborne - Western Northumberland County.
Tonight..Clear. Wind northeast 20 km/h becoming light this evening.
 Low plus 5.
Wednesday..Sunny. Wind becoming northeast 20 km/h in the morning.
 High 17. UV index 6 or high.
Wednesday night..Clear. Low plus 4.

Belleville - Quinte West - Eastern Northumberland County.
Tonight..Clear. Wind northeast 20 km/h becoming light this evening.
 Low plus 5.
Wednesday..Sunny. Wind becoming northeast 20 km/h in the morning.
 High 17. UV index 6 or high.
Wednesday night..Clear. Low plus 4.

Picton - Sandbanks Park.
Tonight..Clear. Wind northeast 20 km/h becoming light this evening.
 Low plus 5.
Wednesday..Sunny. Wind becoming northeast 20 km/h in the morning.
 High 17. UV index 6 or high.
Wednesday night..Clear. Low plus 4.

Napanee - Consecon.
Tonight..Clear. Wind northeast 20 km/h becoming light this evening.
 Low plus 5.
Wednesday..Sunny. Wind becoming northeast 20 km/h in the morning.
 High 17. UV index 6 or high.
Wednesday night..Clear. Low plus 4.

Kingston - Odessa - Frontenac Islands.
Tonight..Clear. Wind northeast 20 km/h gusting to 40 becoming light
 this evening. Low plus 5.
Wednesday..Sunny. Wind becoming northeast 20 km/h gusting to 40 in
 the morning. High 17. UV index 6 or high.
Wednesday night..Clear. Wind northeast 20 km/h becoming light in the
 evening. Low plus 4.

Lindsay - Southern Kawartha Lakes.
Tonight..Clear. Low plus 2 with patchy frost.
Wednesday..Sunny. Wind northeast 20 km/h becoming light late in the
 morning. High 18. UV index 6 or high.
Wednesday night..Clear. Low plus 3 with risk of frost.

Fenelon Falls - Balsam Lake Park - Northern Kawartha Lakes.
Tonight..Clear. Low plus 2 with patchy frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h late in the
 morning. High 18. UV index 6 or high.
Wednesday night..Clear. Low plus 3 with risk of frost.

Peterborough City - Lakefield - Southern Peterborough County.
Tonight..Clear. Wind northeast 20 km/h becoming light this evening.
 Low plus 2 with patchy frost.
Wednesday..Sunny. Wind northeast 20 km/h becoming light in the
 afternoon. High 18. UV index 6 or high.
Wednesday night..Clear. Low plus 3 with risk of frost.

Apsley - Woodview - Northern Peterborough County.
Tonight..Clear. Wind northeast 20 km/h becoming light this evening.
 Low plus 1 with patchy frost.
Wednesday..Sunny. Wind northeast 20 km/h becoming light in the
 afternoon. High 17. UV index 6 or high.
Wednesday night..Clear. Low plus 2 with risk of frost.

Stirling - Tweed - Madoc.
Tonight..Clear. Wind northeast 20 km/h becoming light early this
 evening. Low plus 3 with risk of frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h in the morning.
 High 18. UV index 6 or high.
Wednesday night..Clear. Low plus 3 with risk of frost.

Tamworth - Sydenham - South Frontenac.
Tonight..Clear. Wind north 20 km/h becoming light this evening. Low
 plus 3 with risk of frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h gusting to 40 in
 the morning. High 18. UV index 6 or high.
Wednesday night..Clear. Low plus 3 with risk of frost.

Kaladar - Bannockburn - Bon Echo Park.
Tonight..Clear. Wind northeast 20 km/h becoming light early this
 evening. Low plus 1 with patchy frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h in the morning.
 High 17. UV index 6 or high.
Wednesday night..Clear. Low zero.

Bancroft - Hastings Highlands - Denbigh.
Tonight..Clear. Wind north 20 km/h becoming light this evening.
 Low zero with frost.
Wednesday..Sunny. Wind northeast 20 km/h becoming light in the
 afternoon. High 15. UV index 6 or high.
Wednesday night..Clear. Low plus 1.

Gananoque - Mallorytown.
Tonight..Clear. Wind north 20 km/h becoming light this evening. Low
 plus 3 with risk of frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h gusting to 40 in
 the morning. High 18. UV index 6 or high.
Wednesday night..Clear. Low plus 3 with risk of frost.

Brockville - Prescott.
Tonight..Clear. Wind north 20 km/h becoming light early this evening.
 Low plus 2 with patchy frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h in the morning.
 High 16. UV index 6 or high.
Wednesday night..Clear. Low plus 2 with risk of frost.

Westport - Charleston Lake.
Tonight..Clear. Wind north 20 km/h becoming light this evening. Low
 plus 3 with risk of frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h in the morning.
 High 18. UV index 6 or high.
Wednesday night..Clear. Low plus 3 with risk of frost.

Merrickville-Wolford - Kemptville.
Tonight..Clear. Wind north 20 km/h becoming light this evening. Low
 plus 2 with patchy frost.
Wednesday..Sunny. Wind northeast 20 km/h becoming light in the
 afternoon. High 16. UV index 6 or high.
Wednesday night..Clear. Low plus 2 with risk of frost.

Ottawa North - Kanata - Orleans.
Tonight..Clear. Wind north 20 km/h becoming light early this evening.
 Low plus 3 with risk of frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h in the morning.
 High 17. UV index 6 or high.
Wednesday night..Clear. Low plus 3 with risk of frost.

Ottawa South - Richmond - Metcalfe.
Tonight..Clear. Wind north 20 km/h becoming light early this evening.
 Low plus 2 with patchy frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h in the morning.
 High 16. UV index 6 or high.
Wednesday night..Clear. Low plus 2 with risk of frost.

Gatineau.
Tonight..Clear. Wind north 20 km/h becoming light early this evening.
 Low plus 3 with risk of frost.
Wednesday..Sunny. Wind north 20 km/h becoming light late in the
 morning. High 17. UV index 5 or moderate.
Wednesday night..Clear. Low plus 3 with risk of frost.

Prescott and Russell.
Tonight..Clear. Wind north 20 km/h becoming light early this evening.
 Low plus 2 with patchy frost.
Wednesday..Sunny. Wind northeast 20 km/h becoming light in the
 afternoon. High 16. UV index 6 or high.
Wednesday night..Clear. Low plus 2 with risk of frost.

Morrisburg - Long Sault.
Tonight..Clear. Low plus 2 with patchy frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h in the morning.
 High 16. UV index 6 or high.
Wednesday night..Clear. Low plus 2 with risk of frost.

Cornwall - Lancaster.
Tonight..Clear. Low plus 2 with patchy frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h in the morning.
 High 16. UV index 6 or high.
Wednesday night..Clear. Low plus 2 with risk of frost.

Winchester - Newington.
Tonight..Clear. Wind north 20 km/h becoming light early this evening.
 Low plus 2 with patchy frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h in the morning.
 High 16. UV index 6 or high.
Wednesday night..Clear. Low plus 2 with risk of frost.

Maxville - Alexandria.
Tonight..Clear. Low plus 2 with patchy frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h late in the
 morning. High 16. UV index 6 or high.
Wednesday night..Clear. Low plus 2 with risk of frost.

Plevna - Sharbot Lake - Western Lanark County.
Tonight..Clear. Wind north 20 km/h becoming light this evening. Low
 plus 2 with patchy frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h in the morning.
 High 17. UV index 6 or high.
Wednesday night..Clear. Low plus 3 with risk of frost.

Smiths Falls - Perth - Eastern Lanark County.
Tonight..Clear. Wind north 20 km/h becoming light early this evening.
 Low plus 2 with patchy frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h in the morning.
 High 17. UV index 6 or high.
Wednesday night..Clear. Low plus 3 with risk of frost.

Port Carling - Port Severn.
Tonight..Clear. Wind northeast 20 km/h becoming light late this
 evening. Low plus 3 with risk of frost.
Wednesday..Sunny. High 17. UV index 6 or high.
Wednesday night..Clear. Low plus 5.

Bracebridge - Gravenhurst.
Tonight..Clear. Low plus 2 with patchy frost.
Wednesday..Sunny. High 18. UV index 6 or high.
Wednesday night..Clear. Low plus 3.

Town of Parry Sound - Rosseau - Killbear Park.
Tonight..Clear. Wind northeast 30 km/h becoming light late this
 evening. Low plus 3 with risk of frost.
Wednesday..Sunny. High 17. UV index 6 or high.
Wednesday night..Clear. Low plus 5.

Huntsville - Baysville.
Tonight..Clear. Low zero with frost.
Wednesday..Sunny. Wind east 20 km/h becoming light in the afternoon.
 High 15. UV index 6 or high.
Wednesday night..Clear. Low plus 1.

Haliburton - Minden - Southern Haliburton County.
Tonight..Clear. Low zero with frost.
Wednesday..Sunny. Wind northeast 20 km/h becoming light in the
 afternoon. High 15. UV index 6 or high.
Wednesday night..Clear. Low plus 1.

Oxtongue Lake - Fort Irwin - Northern Haliburton County.
Tonight..Clear. Wind northeast 20 km/h. Low zero with frost.
Wednesday..Sunny. Wind northeast 20 km/h becoming light in the
 afternoon. High 15. UV index 6 or high.
Wednesday night..Clear. Low plus 1.

Barry's Bay - Killaloe.
Tonight..Clear. Wind north 20 km/h becoming light early this evening.
 Low zero with frost.
Wednesday..Clearing in the morning. Wind northeast 20 km/h becoming
 light in the afternoon. High 15. UV index 6 or high.
Wednesday night..Clear. Low plus 1.

Renfrew - Arnprior - Calabogie.
Tonight..Clear. Low plus 1 with patchy frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h late in the
 morning. High 16. UV index 6 or high.
Wednesday night..Clear. Low plus 1.

Petawawa - Pembroke - Cobden.
Tonight..Clear. Wind becoming north 30 km/h early this evening then
 light after midnight. Low plus 1 with patchy frost.
Wednesday..Sunny. High 16. UV index 6 or high.
Wednesday night..Clear. Low plus 1.

Western Algonquin Park - Lake of Two Rivers.
Tonight..Clear. Low zero with frost.
Wednesday..Sunny. Wind northeast 20 km/h becoming light in the
 afternoon. High 15. UV index 6 or high.
Wednesday night..Clear. Low plus 1.

Deep River - Whitney - Eastern Algonquin Park.
Tonight..Clear. Low zero with frost.
Wednesday..Sunny. Wind northeast 20 km/h becoming light in the
 afternoon. High 15. UV index 6 or high.
Wednesday night..Clear. Low plus 1.

Bayfield Inlet - Dunchurch.
Tonight..Clear. Low plus 3 with risk of frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h late in the
 morning. High 17. UV index 6 or high.
Wednesday night..Clear. Low plus 5.

South River - Burk's Falls.
Tonight..Clear. Low zero with frost.
Wednesday..Sunny. Wind becoming northeast 20 km/h late in the
 morning. High 15. UV index 6 or high.
Wednesday night..Clear. Low plus 1.

End
$$$$^^

--- up 2 days, 7 hours, 18 minutes
 * Origin: Northern Realms (618:400/23)

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