Extended Forecasts for Southern Ontario and the National Capital Region


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

 
FPCN51 CWTO 231500
Extended forecasts from Sunday night 24 September to Friday 29
September for Southern Ontario and the National Capital Region issued
by Environment Canada at 11:00 a.m. EDT Saturday 23 September 2017.
The next scheduled forecast will be issued at 3:30 p.m. EDT.

City of Toronto.
Sunday night..Clear. Low 20.
Monday..Sunny. High 30.
Monday night..Clear. Low 18.
Tuesday..A mix of sun and cloud. High 30.
Tuesday night..Cloudy periods. Low 19.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 27.
Wednesday night..Cloudy periods. Low 12.
Thursday..A mix of sun and cloud. High 19.
Thursday night..Cloudy periods. Low 9.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 17.
Normals for the period..Low 10. High 19.

Windsor - Essex - Chatham-Kent.
Sunday night..Clear. Low 17.
Monday..Sunny. High 30.
Monday night..Clear. Low 18.
Tuesday..A mix of sun and cloud. High 29.
Tuesday night..Cloudy periods. Low 16.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 27.
Wednesday night..Cloudy periods. Low 12.
Thursday..A mix of sun and cloud. High 22.
Thursday night..Cloudy periods. Low 10.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 20.
Normals for the period..Low 10. High 20.

Sarnia - Lambton.
Sunday night..Clear. Low 17.
Monday..Sunny. High 31.
Monday night..Clear. Low 16.
Tuesday..A mix of sun and cloud. High 28.
Tuesday night..Cloudy periods. Low 16.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 26.
Wednesday night..Cloudy periods. Low 12.
Thursday..A mix of sun and cloud. High 19.
Thursday night..Cloudy periods. Low 11.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 16.
Normals for the period..Low 9. High 20.

Elgin.
Sunday night..Clear. Low 18.
Monday..Sunny. High 30.
Monday night..Clear. Low 18.
Tuesday..A mix of sun and cloud. High 30.
Tuesday night..Cloudy periods. Low 16.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 27.
Wednesday night..Cloudy periods. Low 11.
Thursday..A mix of sun and cloud. High 20.
Thursday night..Cloudy periods. Low 10.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 17.
Normals for the period..Low 10. High 19.

London - Middlesex.
Sunday night..Clear. Low 17.
Monday..Sunny. High 31.
Monday night..Clear. Low 17.
Tuesday..A mix of sun and cloud. High 30.
Tuesday night..Cloudy periods. Low 16.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 27.
Wednesday night..Cloudy periods. Low 12.
Thursday..A mix of sun and cloud. High 19.
Thursday night..Cloudy periods. Low 9.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 16.
Normals for the period..Low 9. High 19.

Simcoe - Delhi - Norfolk.
Sunday night..Clear. Low 17.
Monday..Sunny. High 31.
Monday night..Clear. Low 16.
Tuesday..A mix of sun and cloud. High 30.
Tuesday night..Cloudy periods. Low 16.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 27.
Wednesday night..Cloudy periods. Low 12.
Thursday..A mix of sun and cloud. High 19.
Thursday night..Cloudy periods. Low 10.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 17.
Normals for the period..Low 9. High 19.

Dunnville - Caledonia - Haldimand.
Sunday night..Clear. Low 17.
Monday..Sunny. High 29.
Monday night..Clear. Low 17.
Tuesday..A mix of sun and cloud. High 29.
Tuesday night..Cloudy periods. Low 19.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 27.
Wednesday night..Cloudy periods. Low 12.
Thursday..A mix of sun and cloud. High 19.
Thursday night..Cloudy periods. Low 10.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 17.
Normals for the period..Low 9. High 19.

Oxford - Brant.
Sunday night..Clear. Low 16.
Monday..Sunny. High 31.
Monday night..Clear. Low 15.
Tuesday..A mix of sun and cloud. High 30.
Tuesday night..Cloudy periods. Low 16.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 27.
Wednesday night..Cloudy periods. Low 11.
Thursday..A mix of sun and cloud. High 19.
Thursday night..Cloudy periods. Low 9.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 16.
Normals for the period..Low 8. High 19.

Niagara.
Sunday night..Clear. Low 18.
Monday..Sunny. High 32.
Monday night..Clear. Low 18.
Tuesday..A mix of sun and cloud. High 31.
Tuesday night..Cloudy periods. Low 18.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 27.
Wednesday night..Cloudy periods. Low 14.
Thursday..A mix of sun and cloud. High 19.
Thursday night..Cloudy periods. Low 12.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 17.
Normals for the period..Low 10. High 20.

City of Hamilton.
Sunday night..Clear. Low 16.
Monday..Sunny. High 30.
Monday night..Clear. Low 16.
Tuesday..A mix of sun and cloud. High 30.
Tuesday night..Cloudy periods. Low 18.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 27.
Wednesday night..Cloudy periods. Low 13.
Thursday..A mix of sun and cloud. High 19.
Thursday night..Cloudy periods. Low 11.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 16.
Normals for the period..Low 8. High 19.

Halton - Peel.
Sunday night..Clear. Low 17.
Monday..Sunny. High 31.
Monday night..Clear. Low 16.
Tuesday..A mix of sun and cloud. High 30.
Tuesday night..Cloudy periods. Low 17.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 27.
Wednesday night..Cloudy periods. Low 11.
Thursday..A mix of sun and cloud. High 19.
Thursday night..Cloudy periods. Low 8.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 16.
Normals for the period..Low 8. High 19.

York - Durham.
Sunday night..Clear. Low 17.
Monday..Sunny. High 31.
Monday night..Clear. Low 17.
Tuesday..A mix of sun and cloud. High 30.
Tuesday night..Cloudy periods. Low 17.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 27.
Wednesday night..Cloudy periods. Low 11.
Thursday..A mix of sun and cloud. High 18.
Thursday night..Cloudy periods. Low 9.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 15.
Normals for the period..Low 8. High 18.

Huron - Perth.
Sunday night..Clear. Low 16.
Monday..Sunny. High 31.
Monday night..Clear. Low 16.
Tuesday..A mix of sun and cloud. High 30.
Tuesday night..Cloudy periods. Low 16.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 26.
Wednesday night..Cloudy with 30 percent chance of showers. Low 11.
Thursday..A mix of sun and cloud with 30 percent chance of showers.
 High 18.
Thursday night..Cloudy periods with 30 percent chance of showers.
 Low 9.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 15.
Normals for the period..Low 8. High 18.

Waterloo - Wellington.
Sunday night..Clear. Low 14.
Monday..Sunny. High 31.
Monday night..Clear. Low 13.
Tuesday..A mix of sun and cloud. High 29.
Tuesday night..Cloudy periods. Low 14.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 26.
Wednesday night..Cloudy with 30 percent chance of showers. Low 12.
Thursday..A mix of sun and cloud with 30 percent chance of showers.
 High 18.
Thursday night..Cloudy periods with 30 percent chance of showers.
 Low 9.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 15.
Normals for the period..Low 8. High 18.

Dufferin - Innisfil.
Sunday night..Clear. Low 16.
Monday..Sunny. High 32.
Monday night..Clear. Low 14.
Tuesday..A mix of sun and cloud. High 31.
Tuesday night..Cloudy periods with 30 percent chance of showers.
 Low 16.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 26.
Wednesday night..Cloudy with 30 percent chance of showers. Low 11.
Thursday..A mix of sun and cloud with 30 percent chance of showers.
 High 18.
Thursday night..Cloudy periods with 30 percent chance of showers.
 Low 8.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 14.
Normals for the period..Low 7. High 18.

Grey - Bruce.
Sunday night..Clear. Low 17.
Monday..Sunny. High 30.
Monday night..Clear. Low 15.
Tuesday..A mix of sun and cloud. High 30.
Tuesday night..Cloudy periods with 40 percent chance of showers.
 Low 16.
Wednesday..Cloudy with 40 percent chance of showers. High 23.
Wednesday night..Cloudy with 30 percent chance of showers. Low 10.
Thursday..A mix of sun and cloud with 30 percent chance of showers.
 High 15.
Thursday night..Cloudy periods with 30 percent chance of showers.
 Low 8.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 13.
Normals for the period..Low 9. High 18.

Barrie - Orillia - Midland.
Sunday night..Clear. Low 16.
Monday..Sunny. High 31.
Monday night..Clear. Low 14.
Tuesday..A mix of sun and cloud. High 30.
Tuesday night..Cloudy periods with 40 percent chance of showers.
 Low 16.
Wednesday..Cloudy with 40 percent chance of showers. High 24.
Wednesday night..Cloudy with 30 percent chance of showers. Low 10.
Thursday..A mix of sun and cloud with 30 percent chance of showers.
 High 17.
Thursday night..Cloudy periods with 30 percent chance of showers.
 Low 7.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 14.
Normals for the period..Low 7. High 18.

Belleville - Quinte - Northumberland.
Sunday night..Clear. Low 18.
Monday..Sunny. High 30.
Monday night..Clear. Low 18.
Tuesday..A mix of sun and cloud. High 30.
Tuesday night..Cloudy periods. Low 17.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 26.
Wednesday night..Cloudy periods. Low 11.
Thursday..A mix of sun and cloud. High 19.
Thursday night..Cloudy periods. Low 8.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 16.
Normals for the period..Low 7. High 18.

Kingston - Prince Edward.
Sunday night..Clear. Low 17.
Monday..Sunny. High 28.
Monday night..Clear. Low 17.
Tuesday..A mix of sun and cloud. High 29.
Tuesday night..Cloudy periods. Low 19.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 25.
Wednesday night..Cloudy periods. Low 12.
Thursday..A mix of sun and cloud. High 19.
Thursday night..Cloudy periods. Low 8.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 17.
Normals for the period..Low 9. High 18.

Peterborough - Kawartha Lakes.
Sunday night..Clear. Low 14.
Monday..Sunny. High 31.
Monday night..Clear. Low 13.
Tuesday..A mix of sun and cloud. High 31.
Tuesday night..Cloudy periods. Low 15.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 26.
Wednesday night..Cloudy periods. Low 10.
Thursday..A mix of sun and cloud. High 19.
Thursday night..Cloudy periods. Low 7.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 15.
Normals for the period..Low 7. High 18.

Stirling - Tweed - South Frontenac.
Sunday night..Clear. Low 15.
Monday..Sunny. High 30.
Monday night..Clear. Low 15.
Tuesday..A mix of sun and cloud. High 30.
Tuesday night..Cloudy periods. Low 16.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 26.
Wednesday night..Cloudy periods. Low 10.
Thursday..A mix of sun and cloud. High 19.
Thursday night..Cloudy periods. Low 7.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 16.
Normals for the period..Low 7. High 18.

Bancroft - Bon Echo Park.
Sunday night..Clear. Low 12.
Monday..Sunny. High 31.
Monday night..Clear. Low 13.
Tuesday..A mix of sun and cloud. High 31.
Tuesday night..Cloudy periods. Low 13.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 25.
Wednesday night..Cloudy periods. Low 10.
Thursday..A mix of sun and cloud. High 19.
Thursday night..Cloudy periods. Low 7.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 16.
Normals for the period..Low 7. High 18.

Brockville - Leeds and Grenville.
Sunday night..Clear. Low 17.
Monday..Sunny. High 32.
Monday night..Clear. Low 17.
Tuesday..A mix of sun and cloud. High 31.
Tuesday night..Cloudy periods. Low 17.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 27.
Wednesday night..Cloudy periods. Low 12.
Thursday..A mix of sun and cloud. High 20.
Thursday night..Cloudy periods. Low 8.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 17.
Normals for the period..Low 8. High 18.

City of Ottawa.
Sunday night..Clear. Low 18.
Monday..Sunny. High 32.
Monday night..Clear. Low 18.
Tuesday..A mix of sun and cloud. High 30.
Tuesday night..Cloudy periods. Low 17.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 26.
Wednesday night..Cloudy periods. Low 12.
Thursday..A mix of sun and cloud. High 20.
Thursday night..Cloudy periods. Low 7.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 17.
Normals for the period..Low 8. High 17.

Gatineau.
Sunday night..Clear. Low 17.
Monday..Sunny. High 32.
Monday night..Clear. Low 16.
Tuesday..A mix of sun and cloud. High 31.
Tuesday night..Cloudy periods. Low 16.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 25.
Wednesday night..Cloudy periods. Low 11.
Thursday..A mix of sun and cloud. High 19.
Thursday night..Cloudy periods. Low 8.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 16.
Normals for the period..Low 7. High 17.

Prescott and Russell.
Sunday night..Clear. Low 18.
Monday..Sunny. High 32.
Monday night..Clear. Low 18.
Tuesday..A mix of sun and cloud. High 30.
Tuesday night..Cloudy periods. Low 17.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 25.
Wednesday night..Cloudy periods. Low 12.
Thursday..A mix of sun and cloud. High 20.
Thursday night..Cloudy periods. Low 8.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 17.
Normals for the period..Low 8. High 17.

Cornwall - Morrisburg.
Sunday night..Clear. Low 17.
Monday..Sunny. High 32.
Monday night..Clear. Low 17.
Tuesday..A mix of sun and cloud. High 32.
Tuesday night..Cloudy periods. Low 16.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 27.
Wednesday night..Cloudy periods. Low 12.
Thursday..A mix of sun and cloud. High 20.
Thursday night..Cloudy periods. Low 8.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 17.
Normals for the period..Low 8. High 18.

Smiths Falls - Lanark - Sharbot Lake.
Sunday night..Clear. Low 16.
Monday..Sunny. High 32.
Monday night..Clear. Low 15.
Tuesday..A mix of sun and cloud. High 31.
Tuesday night..Cloudy periods. Low 16.
Wednesday..A mix of sun and cloud with 40 percent chance of showers.
 High 25.
Wednesday night..Cloudy periods. Low 11.
Thursday..A mix of sun and cloud. High 20.
Thursday night..Cloudy periods. Low 7.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 17.
Normals for the period..Low 8. High 18.

Parry Sound - Muskoka.
Sunday night..Clear. Low 14.
Monday..Sunny. High 31.
Monday night..Clear. Low 14.
Tuesday..A mix of sun and cloud. High 30.
Tuesday night..Cloudy periods with 40 percent chance of showers.
 Low 15.
Wednesday..Cloudy with 40 percent chance of showers. High 24.
Wednesday night..Cloudy with 30 percent chance of showers. Low 9.
Thursday..A mix of sun and cloud with 30 percent chance of showers.
 High 16.
Thursday night..Cloudy periods with 30 percent chance of showers.
 Low 6.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 13.
Normals for the period..Low 6. High 17.

Haliburton.
Sunday night..Clear. Low 13.
Monday..Sunny. High 30.
Monday night..Clear. Low 13.
Tuesday..A mix of sun and cloud. High 30.
Tuesday night..Cloudy periods with 40 percent chance of showers.
 Low 16.
Wednesday..Cloudy with 40 percent chance of showers. High 24.
Wednesday night..Cloudy periods. Low 10.
Thursday..A mix of sun and cloud. High 18.
Thursday night..Cloudy periods with 30 percent chance of showers.
 Low 6.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 14.
Normals for the period..Low plus 5. High 17.

Renfrew - Pembroke - Barry's Bay.
Sunday night..Clear. Low 14.
Monday..Sunny. High 32.
Monday night..Clear. Low 14.
Tuesday..A mix of sun and cloud. High 31.
Tuesday night..Cloudy periods with 30 percent chance of showers.
 Low 16.
Wednesday..Cloudy with 40 percent chance of showers. High 24.
Wednesday night..Cloudy periods. Low 10.
Thursday..A mix of sun and cloud. High 19.
Thursday night..Cloudy periods. Low 6.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 15.
Normals for the period..Low plus 5. High 17.

Algonquin.
Sunday night..Clear. Low 13.
Monday..Sunny. High 31.
Monday night..Clear. Low 13.
Tuesday..A mix of sun and cloud. High 29.
Tuesday night..Cloudy periods with 40 percent chance of showers.
 Low 15.
Wednesday..Cloudy with 40 percent chance of showers. High 24.
Wednesday night..Cloudy periods. Low 9.
Thursday..A mix of sun and cloud. High 17.
Thursday night..Cloudy periods with 30 percent chance of showers.
 Low 6.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 14.
Normals for the period..Low plus 5. High 17.

Burk's Falls - Bayfield Inlet.
Sunday night..Clear. Low 14.
Monday..Sunny. High 30.
Monday night..Clear. Low 16.
Tuesday..A mix of sun and cloud. High 29.
Tuesday night..Cloudy periods with 40 percent chance of showers.
 Low 16.
Wednesday..Cloudy with 40 percent chance of showers. High 23.
Wednesday night..Cloudy with 30 percent chance of showers. Low 9.
Thursday..A mix of sun and cloud with 30 percent chance of showers.
 High 15.
Thursday night..Cloudy periods with 30 percent chance of showers.
 Low 6.
Friday..A mix of sun and cloud with 30 percent chance of showers.
 High 13.
Normals for the period..Low 7. High 16.

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