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Extended Forecasts for Southern Ontario and the National Capital Region


* NOTE: Corrected and/or amended bulletins are listed first *

 
FPCN51 CWTO 221930
Extended forecasts from Thursday 24 September to Monday 28 September
for Southern Ontario and the National Capital Region issued by
Environment Canada at 3:30 p.m. EDT Tuesday 22 September 2026.
The next scheduled forecast will be issued at 5:00 a.m. EDT
Wednesday.

City of Toronto.
Thursday..Sunny. High 20.
Thursday night..Clear. Low 6.
Friday..Sunny. High 22.
Friday night..Clear. Low 8.
Saturday..A mix of sun and cloud. High 22.
Saturday night..Cloudy periods. Low 8.
Sunday..A mix of sun and cloud. High 22.
Sunday night..Cloudy periods. Low 10.
Monday..A mix of sun and cloud. High 23.
Normals for the period..Low 10. High 19.

Windsor - Essex - Chatham-Kent.
Thursday..Sunny. High 20.
Thursday night..Clear. Low 7.
Friday..Sunny. High 20.
Friday night..Clear. Low plus 4.
Saturday..Sunny. High 21.
Saturday night..Clear. Low 10.
Sunday..Sunny. High 22.
Sunday night..Clear. Low 11.
Monday..A mix of sun and cloud. High 24.
Normals for the period..Low 10. High 21.

Sarnia - Lambton.
Thursday..Sunny. High 21.
Thursday night..Clear. Low plus 5.
Friday..Sunny. High 20.
Friday night..Clear. Low plus 4.
Saturday..Sunny. High 20.
Saturday night..Clear. Low 10.
Sunday..A mix of sun and cloud. High 21.
Sunday night..Cloudy periods. Low 11.
Monday..A mix of sun and cloud. High 22.
Normals for the period..Low 9. High 20.

Elgin.
Thursday..Sunny. High 21.
Thursday night..Clear. Low 7.
Friday..Sunny. High 20.
Friday night..Clear. Low plus 5.
Saturday..Sunny. High 21.
Saturday night..Clear. Low 8.
Sunday..Sunny. High 21.
Sunday night..Clear. Low 10.
Monday..Sunny. High 22.
Normals for the period..Low 10. High 20.

London - Middlesex.
Thursday..Sunny. High 21.
Thursday night..Clear. Low plus 5.
Friday..Sunny. High 21.
Friday night..Clear. Low plus 5.
Saturday..Sunny. High 21.
Saturday night..Clear. Low 8.
Sunday..Sunny. High 21.
Sunday night..Clear. Low 10.
Monday..Sunny. High 23.
Normals for the period..Low 9. High 19.

Simcoe - Delhi - Norfolk.
Thursday..Sunny. High 20.
Thursday night..Clear. Low plus 4.
Friday..Sunny. High 20.
Friday night..Clear. Low plus 5.
Saturday..Sunny. High 22.
Saturday night..Clear. Low 8.
Sunday..A mix of sun and cloud. High 21.
Sunday night..Cloudy periods. Low 10.
Monday..A mix of sun and cloud. High 22.
Normals for the period..Low 9. High 19.

Dunnville - Caledonia - Haldimand.
Thursday..Sunny. High 20.
Thursday night..Clear. Low plus 5.
Friday..Sunny. High 20.
Friday night..Clear. Low 6.
Saturday..Sunny. High 22.
Saturday night..Clear. Low 10.
Sunday..A mix of sun and cloud. High 20.
Sunday night..Cloudy periods. Low 11.
Monday..A mix of sun and cloud. High 22.
Normals for the period..Low 9. High 19.

Oxford - Brant.
Thursday..Sunny. High 19.
Thursday night..Clear. Low plus 4.
Friday..Sunny. High 21.
Friday night..Clear. Low plus 5.
Saturday..Sunny. High 22.
Saturday night..Clear. Low 8.
Sunday..A mix of sun and cloud. High 22.
Sunday night..Cloudy periods. Low 10.
Monday..A mix of sun and cloud. High 23.
Normals for the period..Low 9. High 20.

Niagara.
Thursday..Sunny. High 20.
Thursday night..Clear. Low 10.
Friday..Sunny. High 20.
Friday night..Clear. Low 12.
Saturday..A mix of sun and cloud. High 21.
Saturday night..Clear. Low 12.
Sunday..Sunny. High 21.
Sunday night..Clear. Low 13.
Monday..Sunny. High 22.
Normals for the period..Low 11. High 19.

City of Hamilton.
Thursday..Sunny. High 19.
Thursday night..Clear. Low 7.
Friday..Sunny. High 21.
Friday night..Clear. Low 8.
Saturday..Sunny. High 22.
Saturday night..Clear. Low 11.
Sunday..Sunny. High 22.
Sunday night..Clear. Low 12.
Monday..A mix of sun and cloud. High 23.
Normals for the period..Low 9. High 19.

Halton - Peel.
Thursday..Sunny. High 20.
Thursday night..Clear. Low plus 4.
Friday..Sunny. High 22.
Friday night..Clear. Low 6.
Saturday..Sunny. High 22.
Saturday night..Clear. Low 8.
Sunday..Sunny. High 22.
Sunday night..Clear. Low 9.
Monday..A mix of sun and cloud. High 23.
Normals for the period..Low 8. High 19.

York - Durham.
Thursday..Sunny. High 20.
Thursday night..Clear. Low plus 4.
Friday..Sunny. High 21.
Friday night..Clear. Low 6.
Saturday..Sunny. High 22.
Saturday night..Clear. Low 9.
Sunday..Sunny. High 22.
Sunday night..Clear. Low 9.
Monday..A mix of sun and cloud. High 22.
Normals for the period..Low 8. High 18.

Huron - Perth.
Thursday..Sunny. High 20.
Thursday night..Clear. Low plus 3.
Friday..Sunny. High 20.
Friday night..Clear. Low plus 3.
Saturday..Sunny. High 21.
Saturday night..Clear. Low 8.
Sunday..A mix of sun and cloud. High 21.
Sunday night..Cloudy periods. Low 10.
Monday..A mix of sun and cloud. High 21.
Normals for the period..Low 8. High 18.

Waterloo - Wellington.
Thursday..Sunny. High 20.
Thursday night..Clear. Low plus 4.
Friday..Sunny. High 20.
Friday night..Clear. Low plus 5.
Saturday..Sunny. High 21.
Saturday night..Clear. Low 8.
Sunday..A mix of sun and cloud. High 22.
Sunday night..Cloudy periods. Low 9.
Monday..A mix of sun and cloud. High 21.
Normals for the period..Low 8. High 18.

Dufferin - Innisfil.
Thursday..Sunny. High 20.
Thursday night..Clear. Low plus 3.
Friday..Sunny. High 20.
Friday night..Clear. Low plus 5.
Saturday..Sunny. High 20.
Saturday night..Clear. Low 8.
Sunday..A mix of sun and cloud. High 20.
Sunday night..Cloudy periods. Low 9.
Monday..A mix of sun and cloud. High 21.
Normals for the period..Low 7. High 18.

Grey - Bruce.
Thursday..Sunny. High 19.
Thursday night..Clear. Low plus 4.
Friday..Sunny. High 19.
Friday night..Clear. Low plus 4.
Saturday..Sunny. High 19.
Saturday night..Clear. Low 8.
Sunday..A mix of sun and cloud. High 20.
Sunday night..Cloudy periods. Low 9.
Monday..A mix of sun and cloud. High 20.
Normals for the period..Low 9. High 18.

Barrie - Orillia - Midland.
Thursday..Sunny. High 19.
Thursday night..Clear. Low 6.
Friday..Sunny. High 20.
Friday night..Clear. Low 6.
Saturday..Sunny. High 20.
Saturday night..Clear. Low 6.
Sunday..A mix of sun and cloud. High 21.
Sunday night..Cloudy periods. Low 8.
Monday..A mix of sun and cloud. High 21.
Normals for the period..Low 7. High 18.

Belleville - Quinte - Northumberland.
Thursday..Sunny. High 20.
Thursday night..Clear. Low 7.
Friday..Sunny. High 21.
Friday night..Increasing cloudiness. Low 11.
Saturday..Clearing. High 22.
Saturday night..Clear. Low 8.
Sunday..Sunny. High 22.
Sunday night..Clear. Low 9.
Monday..Sunny. High 22.
Normals for the period..Low 8. High 18.

Kingston - Prince Edward.
Thursday..Sunny. High 20.
Thursday night..Clear. Low 7.
Friday..Sunny. High 21.
Friday night..Increasing cloudiness. Low 11.
Saturday..Clearing. High 22.
Saturday night..Clear. Low 8.
Sunday..Sunny. High 22.
Sunday night..Clear. Low 9.
Monday..Sunny. High 22.
Normals for the period..Low 8. High 18.

Peterborough - Kawartha Lakes.
Thursday..Sunny. High 20.
Thursday night..Clear. Low plus 3.
Friday..Sunny. High 21.
Friday night..Clear. Low 7.
Saturday..Sunny. High 22.
Saturday night..Clear. Low plus 4.
Sunday..Sunny. High 21.
Sunday night..Clear. Low 6.
Monday..Sunny. High 22.
Normals for the period..Low 7. High 18.

Stirling - Tweed - South Frontenac.
Thursday..Sunny. High 19.
Thursday night..Clear. Low 6.
Friday..Sunny. High 20.
Friday night..Cloudy periods. Low 11.
Saturday..A mix of sun and cloud. High 21.
Saturday night..Clear. Low 7.
Sunday..Sunny. High 21.
Sunday night..Clear. Low 8.
Monday..Sunny. High 21.
Normals for the period..Low 7. High 18.

Bancroft - Bon Echo Park.
Thursday..Sunny. High 19.
Thursday night..Clear. Low plus 1.
Friday..Sunny. High 20.
Friday night..Clear. Low 7.
Saturday..Sunny. High 21.
Saturday night..Clear. Low 6.
Sunday..A mix of sun and cloud. High 21.
Sunday night..Cloudy periods. Low 7.
Monday..A mix of sun and cloud. High 21.
Normals for the period..Low 6. High 18.

Brockville - Leeds and Grenville.
Thursday..Sunny. High 19.
Thursday night..Clear. Low 6.
Friday..Sunny. High 20.
Friday night..Cloudy. Low 11.
Saturday..A mix of sun and cloud. High 22.
Saturday night..Clear. Low 9.
Sunday..Sunny. High 21.
Sunday night..Clear. Low 9.
Monday..Sunny. High 21.
Normals for the period..Low 9. High 18.

City of Ottawa.
Thursday..Sunny. High 20.
Thursday night..Clear. Low plus 3.
Friday..Sunny. High 22.
Friday night..Cloudy. Low 10.
Saturday..A mix of sun and cloud. High 23.
Saturday night..Clear. Low 8.
Sunday..Sunny. High 22.
Sunday night..Clear. Low 10.
Monday..Sunny. High 22.
Normals for the period..Low 8. High 18.

Gatineau.
Thursday..Sunny. High 21.
Thursday night..Clear. Low 6.
Friday..Sunny. High 22.
Friday night..Cloudy periods. Low 9.
Saturday..A mix of sun and cloud. High 22.
Saturday night..Cloudy periods. Low 8.
Sunday..A mix of sun and cloud. High 22.
Sunday night..Cloudy periods. Low 10.
Monday..A mix of sun and cloud. High 22.
Normals for the period..Low 7. High 17.

Prescott and Russell.
Thursday..Sunny. High 19.
Thursday night..Clear. Low plus 4.
Friday..Sunny. High 21.
Friday night..Cloudy. Low 11.
Saturday..A mix of sun and cloud. High 22.
Saturday night..Clear. Low 9.
Sunday..Sunny. High 22.
Sunday night..Clear. Low 10.
Monday..Sunny. High 22.
Normals for the period..Low 8. High 18.

Cornwall - Morrisburg.
Thursday..Sunny. High 19.
Thursday night..Clear. Low plus 3.
Friday..A mix of sun and cloud. High 21.
Friday night..Cloudy. Low 11.
Saturday..Cloudy. High 22.
Saturday night..Clear. Low 9.
Sunday..Sunny. High 21.
Sunday night..Clear. Low 11.
Monday..Sunny. High 22.
Normals for the period..Low 8. High 18.

Smiths Falls - Lanark - Sharbot Lake.
Thursday..Sunny. High 19.
Thursday night..Clear. Low plus 5.
Friday..Sunny. High 20.
Friday night..Cloudy periods. Low 10.
Saturday..A mix of sun and cloud. High 21.
Saturday night..Clear. Low 7.
Sunday..Sunny. High 21.
Sunday night..Clear. Low 9.
Monday..Sunny. High 21.
Normals for the period..Low 8. High 18.

Parry Sound - Muskoka.
Thursday..Sunny. High 20.
Thursday night..Clear. Low plus 2.
Friday..Sunny. High 20.
Friday night..Clear. Low plus 5.
Saturday..Sunny. High 21.
Saturday night..Clear. Low 7.
Sunday..Sunny. High 21.
Sunday night..Clear. Low 8.
Monday..A mix of sun and cloud. High 20.
Normals for the period..Low 6. High 17.

Haliburton.
Thursday..Sunny. High 19.
Thursday night..Clear. Low plus 3.
Friday..Sunny. High 19.
Friday night..Clear. Low 8.
Saturday..Sunny. High 20.
Saturday night..Clear. Low 7.
Sunday..A mix of sun and cloud. High 21.
Sunday night..Cloudy periods. Low 7.
Monday..A mix of sun and cloud. High 21.
Normals for the period..Low plus 5. High 18.

Renfrew - Pembroke - Barry's Bay.
Thursday..Sunny. High 19.
Thursday night..Clear. Low plus 3.
Friday..Sunny. High 20.
Friday night..Clear. Low 7.
Saturday..Sunny. High 21.
Saturday night..Clear. Low 6.
Sunday..Sunny. High 22.
Sunday night..Clear. Low 8.
Monday..A mix of sun and cloud. High 22.
Normals for the period..Low plus 5. High 17.

Algonquin.
Thursday..Sunny. High 18.
Thursday night..Clear. Low zero.
Friday..Sunny. High 19.
Friday night..Clear. Low plus 3.
Saturday..Sunny. High 20.
Saturday night..Clear. Low 6.
Sunday..A mix of sun and cloud. High 21.
Sunday night..Cloudy periods. Low 8.
Monday..A mix of sun and cloud. High 21.
Normals for the period..Low plus 5. High 17.

Burk's Falls - Bayfield Inlet.
Thursday..Sunny. High 20.
Thursday night..Clear. Low plus 3.
Friday..Sunny. High 20.
Friday night..Clear. Low plus 4.
Saturday..Sunny. High 20.
Saturday night..Clear. Low 7.
Sunday..Sunny. High 21.
Sunday night..Clear. Low 9.
Monday..A mix of sun and cloud. High 20.
Normals for the period..Low 7. High 16.

End
$$$$^^

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