Extended Forecasts for Southern Ontario and the National Capital Region


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

 
FPCN51 CWTO 201930
Extended forecasts from Tuesday 22 August to Saturday 26 August for
Southern Ontario and the National Capital Region issued by
Environment Canada at 3:30 p.m. EDT Sunday 20 August 2017.
The next scheduled forecast will be issued at 5:00 a.m. EDT Monday.

City of Toronto.
Tuesday..Cloudy with 70 percent chance of showers or thunderstorms.
 High 25.
Tuesday night..Cloudy with 40 percent chance of showers. Low 14.
Wednesday..A mix of sun and cloud. High 22.
Wednesday night..Clear. Low 12.
Thursday..A mix of sun and cloud. High 22.
Thursday night..Clear. Low 10.
Friday..Sunny. High 23.
Friday night..Clear. Low 10.
Saturday..A mix of sun and cloud. High 24.
Normals for the period..Low 15. High 25.

Windsor - Essex - Chatham-Kent.
Tuesday..Cloudy with 70 percent chance of showers or thunderstorms.
 High 26.
Tuesday night..Cloudy with 40 percent chance of showers. Low 14.
Wednesday..A mix of sun and cloud. High 23.
Wednesday night..Cloudy periods. Low 13.
Thursday..A mix of sun and cloud. High 24.
Thursday night..Clear. Low 12.
Friday..Sunny. High 24.
Friday night..Clear. Low 13.
Saturday..A mix of sun and cloud. High 25.
Normals for the period..Low 15. High 26.

Sarnia - Lambton.
Tuesday..Cloudy with 70 percent chance of showers or thunderstorms.
 Windy. High 25.
Tuesday night..Cloudy with 40 percent chance of showers. Low 15.
Wednesday..A mix of sun and cloud. High 22.
Wednesday night..Cloudy periods. Low 12.
Thursday..A mix of sun and cloud. High 21.
Thursday night..Clear. Low 11.
Friday..Sunny. High 22.
Friday night..Clear. Low 11.
Saturday..A mix of sun and cloud. High 24.
Normals for the period..Low 14. High 26.

Elgin.
Tuesday..Cloudy with 70 percent chance of showers or thunderstorms.
 High 25.
Tuesday night..Cloudy with 40 percent chance of showers. Low 14.
Wednesday..A mix of sun and cloud. High 22.
Wednesday night..Cloudy periods. Low 11.
Thursday..A mix of sun and cloud. High 22.
Thursday night..Clear. Low 10.
Friday..Sunny. High 23.
Friday night..Clear. Low 10.
Saturday..A mix of sun and cloud. High 24.
Normals for the period..Low 15. High 25.

London - Middlesex.
Tuesday..Cloudy with 70 percent chance of showers or thunderstorms.
 High 24.
Tuesday night..Cloudy with 40 percent chance of showers. Low 14.
Wednesday..A mix of sun and cloud. High 21.
Wednesday night..Cloudy periods. Low 10.
Thursday..A mix of sun and cloud. High 21.
Thursday night..Clear. Low 9.
Friday..Sunny. High 22.
Friday night..Clear. Low 9.
Saturday..A mix of sun and cloud. High 24.
Normals for the period..Low 14. High 25.

Simcoe - Delhi - Norfolk.
Tuesday..Cloudy with 70 percent chance of showers or thunderstorms.
 Windy. High 23.
Tuesday night..Cloudy with 40 percent chance of showers. Low 12.
Wednesday..A mix of sun and cloud. High 21.
Wednesday night..Cloudy periods. Low 10.
Thursday..A mix of sun and cloud. High 22.
Thursday night..Clear. Low 9.
Friday..Sunny. High 22.
Friday night..Clear. Low 10.
Saturday..A mix of sun and cloud. High 23.
Normals for the period..Low 14. High 25.

Dunnville - Caledonia - Haldimand.
Tuesday..Cloudy with 70 percent chance of showers or thunderstorms.
 Windy. High 24.
Tuesday night..Cloudy with 40 percent chance of showers. Windy.
 Low 14.
Wednesday..A mix of sun and cloud. High 21.
Wednesday night..Cloudy periods. Low 11.
Thursday..A mix of sun and cloud. High 21.
Thursday night..Clear. Low 10.
Friday..Sunny. High 22.
Friday night..Clear. Low 11.
Saturday..A mix of sun and cloud. High 23.
Normals for the period..Low 14. High 25.

Oxford - Brant.
Tuesday..Cloudy with 70 percent chance of showers or thunderstorms.
 High 23.
Tuesday night..Cloudy with 40 percent chance of showers. Windy.
 Low 13.
Wednesday..A mix of sun and cloud. High 21.
Wednesday night..Cloudy periods. Low 9.
Thursday..A mix of sun and cloud. High 22.
Thursday night..Clear. Low 9.
Friday..Sunny. High 22.
Friday night..Clear. Low 9.
Saturday..A mix of sun and cloud. High 23.
Normals for the period..Low 14. High 25.

Niagara.
Tuesday..Cloudy with 70 percent chance of showers or thunderstorms.
 High 28.
Tuesday night..Cloudy with 40 percent chance of showers. Windy.
 Low 16.
Wednesday..A mix of sun and cloud. High 23.
Wednesday night..Cloudy periods. Low 14.
Thursday..A mix of sun and cloud. High 21.
Thursday night..Clear. Low 13.
Friday..Sunny. High 22.
Friday night..Clear. Low 14.
Saturday..A mix of sun and cloud. High 22.
Normals for the period..Low 15. High 25.

City of Hamilton.
Tuesday..Cloudy with 70 percent chance of showers or thunderstorms.
 Windy. High 25.
Tuesday night..Cloudy with 40 percent chance of showers. Windy.
 Low 14.
Wednesday..A mix of sun and cloud. High 22.
Wednesday night..Cloudy periods. Low 11.
Thursday..A mix of sun and cloud. High 21.
Thursday night..Clear. Low 12.
Friday..Sunny. High 22.
Friday night..Clear. Low 12.
Saturday..A mix of sun and cloud. High 23.
Normals for the period..Low 14. High 25.

Halton - Peel.
Tuesday..Cloudy with 70 percent chance of showers or thunderstorms.
 Windy. High 25.
Tuesday night..Cloudy with 40 percent chance of showers. Windy.
 Low 14.
Wednesday..A mix of sun and cloud. High 22.
Wednesday night..Clear. Low 10.
Thursday..A mix of sun and cloud. High 22.
Thursday night..Clear. Low 8.
Friday..Sunny. High 23.
Friday night..Clear. Low 9.
Saturday..A mix of sun and cloud. High 24.
Normals for the period..Low 13. High 24.

York - Durham.
Tuesday..Cloudy with 70 percent chance of showers or thunderstorms.
 High 23.
Tuesday night..Cloudy with 40 percent chance of showers. Low 14.
Wednesday..A mix of sun and cloud. High 22.
Wednesday night..Clear. Low 11.
Thursday..A mix of sun and cloud. High 21.
Thursday night..Clear. Low 9.
Friday..Sunny. High 22.
Friday night..Clear. Low 10.
Saturday..A mix of sun and cloud. High 23.
Normals for the period..Low 14. High 24.

Huron - Perth.
Tuesday..Cloudy with 70 percent chance of showers or thunderstorms.
 High 23.
Tuesday night..Cloudy with 40 percent chance of showers. Low 13.
Wednesday..A mix of sun and cloud. High 20.
Wednesday night..Cloudy periods. Low 9.
Thursday..A mix of sun and cloud. High 21.
Thursday night..Clear. Low 8.
Friday..Sunny. High 22.
Friday night..Clear. Low 9.
Saturday..A mix of sun and cloud. High 23.
Normals for the period..Low 13. High 24.

Waterloo - Wellington.
Tuesday..Cloudy with 70 percent chance of showers or thunderstorms.
 Windy. High 23.
Tuesday night..Cloudy with 40 percent chance of showers. Low 13.
Wednesday..A mix of sun and cloud. High 21.
Wednesday night..Cloudy periods. Low 9.
Thursday..A mix of sun and cloud. High 22.
Thursday night..Clear. Low 9.
Friday..Sunny. High 22.
Friday night..Clear. Low 10.
Saturday..A mix of sun and cloud. High 23.
Normals for the period..Low 13. High 24.

Dufferin - Innisfil.
Tuesday..Showers or thunderstorms. High 24.
Tuesday night..Cloudy with 30 percent chance of showers. Low 13.
Wednesday..A mix of sun and cloud. High 20.
Wednesday night..Cloudy periods. Low 10.
Thursday..Sunny. High 20.
Thursday night..Clear. Low 8.
Friday..Sunny. High 22.
Friday night..Clear. Low 8.
Saturday..A mix of sun and cloud. High 23.
Normals for the period..Low 12. High 24.

Grey - Bruce.
Tuesday..Showers or thunderstorms. Windy. High 22.
Tuesday night..Cloudy with 30 percent chance of showers. Windy.
 Low 14.
Wednesday..A mix of sun and cloud. High 20.
Wednesday night..Cloudy periods. Low 10.
Thursday..Sunny. High 19.
Thursday night..Clear. Low 8.
Friday..Sunny. High 21.
Friday night..Clear. Low 8.
Saturday..A mix of sun and cloud. High 22.
Normals for the period..Low 14. High 23.

Barrie - Orillia - Midland.
Tuesday..Showers or thunderstorms. High 24.
Tuesday night..Cloudy with 30 percent chance of showers. Windy.
 Low 15.
Wednesday..A mix of sun and cloud. High 20.
Wednesday night..Cloudy periods. Low 9.
Thursday..Sunny. High 20.
Thursday night..Clear. Low 7.
Friday..Sunny. High 22.
Friday night..Clear. Low 8.
Saturday..A mix of sun and cloud. High 23.
Normals for the period..Low 12. High 24.

Belleville - Quinte - Northumberland.
Tuesday..Cloudy with 70 percent chance of showers or thunderstorms.
 High 24.
Tuesday night..Cloudy with 60 percent chance of showers. Windy.
 Low 14.
Wednesday..A mix of sun and cloud with 30 percent chance of showers.
 Windy. High 22.
Wednesday night..Clear. Low 12.
Thursday..A mix of sun and cloud. High 20.
Thursday night..Clear. Low 10.
Friday..Sunny. High 23.
Friday night..Clear. Low 10.
Saturday..Sunny. High 23.
Normals for the period..Low 14. High 24.

Kingston - Prince Edward.
Tuesday..Cloudy with 70 percent chance of showers or thunderstorms.
 High 25.
Tuesday night..Cloudy with 60 percent chance of showers. Low 15.
Wednesday..A mix of sun and cloud with 30 percent chance of showers.
 High 22.
Wednesday night..Clear. Low 12.
Thursday..A mix of sun and cloud. High 21.
Thursday night..Clear. Low 11.
Friday..Sunny. High 22.
Friday night..Clear. Low 11.
Saturday..Sunny. High 23.
Normals for the period..Low 14. High 24.

Peterborough - Kawartha Lakes.
Tuesday..Cloudy with 70 percent chance of showers or thunderstorms.
 High 23.
Tuesday night..Cloudy with 60 percent chance of showers. Windy.
 Low 13.
Wednesday..A mix of sun and cloud with 30 percent chance of showers.
 High 22.
Wednesday night..Clear. Low 8.
Thursday..A mix of sun and cloud. High 20.
Thursday night..Clear. Low 7.
Friday..Sunny. High 23.
Friday night..Clear. Low 7.
Saturday..Sunny. High 24.
Normals for the period..Low 12. High 24.

Stirling - Tweed - South Frontenac.
Tuesday..Cloudy with 70 percent chance of showers or thunderstorms.
 High 25.
Tuesday night..Cloudy with 60 percent chance of showers. Low 13.
Wednesday..A mix of sun and cloud with 30 percent chance of showers.
 High 21.
Wednesday night..Clear. Low 9.
Thursday..A mix of sun and cloud. High 20.
Thursday night..Clear. Low 8.
Friday..Sunny. High 23.
Friday night..Clear. Low 9.
Saturday..Sunny. High 24.
Normals for the period..Low 13. High 24.

Bancroft - Bon Echo Park.
Tuesday..Showers. High 24.
Tuesday night..Cloudy with 40 percent chance of showers. Low 12.
Wednesday..Cloudy with 60 percent chance of showers. High 20.
Wednesday night..Cloudy periods. Low 7.
Thursday..Sunny. High 20.
Thursday night..Cloudy periods. Low 7.
Friday..A mix of sun and cloud. High 23.
Friday night..Clear. Low 8.
Saturday..Sunny. High 24.
Normals for the period..Low 12. High 24.

Brockville - Leeds and Grenville.
Tuesday..Cloudy with 70 percent chance of showers. High 27.
Tuesday night..Cloudy with 70 percent chance of showers. Low 14.
Wednesday..Cloudy with 30 percent chance of showers. High 21.
Wednesday night..Cloudy periods. Low 10.
Thursday..A mix of sun and cloud. High 22.
Thursday night..Clear. Low 10.
Friday..A mix of sun and cloud. High 23.
Friday night..Clear. Low 11.
Saturday..Sunny. High 24.
Normals for the period..Low 14. High 24.

City of Ottawa.
Tuesday..Cloudy with 70 percent chance of showers. High 26.
Tuesday night..Cloudy with 70 percent chance of showers. Low 14.
Wednesday..Cloudy with 30 percent chance of showers. High 20.
Wednesday night..Cloudy periods. Low 9.
Thursday..A mix of sun and cloud. High 21.
Thursday night..Clear. Low 10.
Friday..A mix of sun and cloud. High 23.
Friday night..Clear. Low 11.
Saturday..Sunny. High 24.
Normals for the period..Low 14. High 24.

Gatineau.
Tuesday..Cloudy with 70 percent chance of showers. High 25.
Tuesday night..Cloudy with 70 percent chance of showers. Low 15.
Wednesday..Cloudy with 30 percent chance of showers. High 20.
Wednesday night..Cloudy periods. Low 9.
Thursday..A mix of sun and cloud. High 21.
Thursday night..Clear. Low 10.
Friday..A mix of sun and cloud. High 23.
Friday night..Clear. Low 10.
Saturday..Sunny. High 24.
Normals for the period..Low 13. High 24.

Prescott and Russell.
Tuesday..Cloudy with 70 percent chance of showers. High 27.
Tuesday night..Cloudy with 70 percent chance of showers. Low 14.
Wednesday..Cloudy with 30 percent chance of showers. High 21.
Wednesday night..Cloudy periods. Low 9.
Thursday..A mix of sun and cloud. High 21.
Thursday night..Clear. Low 10.
Friday..A mix of sun and cloud. High 23.
Friday night..Clear. Low 11.
Saturday..Sunny. High 24.
Normals for the period..Low 14. High 24.

Cornwall - Morrisburg.
Tuesday..Cloudy with 70 percent chance of showers. High 28.
Tuesday night..Cloudy with 70 percent chance of showers. Low 14.
Wednesday..Cloudy with 30 percent chance of showers. High 20.
Wednesday night..Cloudy periods. Low 10.
Thursday..A mix of sun and cloud. High 21.
Thursday night..Clear. Low 10.
Friday..A mix of sun and cloud. High 23.
Friday night..Clear. Low 10.
Saturday..Sunny. High 23.
Normals for the period..Low 13. High 24.

Smiths Falls - Lanark - Sharbot Lake.
Tuesday..Cloudy with 70 percent chance of showers. High 28.
Tuesday night..Cloudy with 70 percent chance of showers. Low 13.
Wednesday..Cloudy with 30 percent chance of showers. High 21.
Wednesday night..Cloudy periods. Low 9.
Thursday..A mix of sun and cloud. High 21.
Thursday night..Clear. Low 9.
Friday..A mix of sun and cloud. High 23.
Friday night..Clear. Low 9.
Saturday..Sunny. High 24.
Normals for the period..Low 14. High 24.

Parry Sound - Muskoka.
Tuesday..Showers. High 22.
Tuesday night..Cloudy with 40 percent chance of showers. Low 13.
Wednesday..Cloudy with 60 percent chance of showers. High 19.
Wednesday night..Cloudy periods. Low 8.
Thursday..Sunny. High 20.
Thursday night..Cloudy periods. Low 7.
Friday..A mix of sun and cloud. High 22.
Friday night..Clear. Low 8.
Saturday..Sunny. High 23.
Normals for the period..Low 10. High 23.

Haliburton.
Tuesday..Showers. High 21.
Tuesday night..Cloudy with 40 percent chance of showers. Low 12.
Wednesday..Cloudy with 60 percent chance of showers. High 19.
Wednesday night..Cloudy periods. Low 7.
Thursday..Sunny. High 20.
Thursday night..Cloudy periods. Low 7.
Friday..A mix of sun and cloud. High 22.
Friday night..Clear. Low 7.
Saturday..Sunny. High 23.
Normals for the period..Low 11. High 24.

Renfrew - Pembroke - Barry's Bay.
Tuesday..Showers. High 23.
Tuesday night..Cloudy with 40 percent chance of showers. Low 13.
Wednesday..Cloudy with 60 percent chance of showers. High 20.
Wednesday night..Cloudy periods. Low 8.
Thursday..Sunny. High 20.
Thursday night..Cloudy periods. Low 8.
Friday..A mix of sun and cloud. High 23.
Friday night..Clear. Low 8.
Saturday..Sunny. High 24.
Normals for the period..Low 11. High 24.

Algonquin.
Tuesday..Showers. High 21.
Tuesday night..Cloudy with 40 percent chance of showers. Low 12.
Wednesday..Cloudy with 60 percent chance of showers. High 19.
Wednesday night..Cloudy periods. Low 7.
Thursday..Sunny. High 20.
Thursday night..Cloudy periods. Low 7.
Friday..A mix of sun and cloud. High 22.
Friday night..Clear. Low 8.
Saturday..Sunny. High 23.
Normals for the period..Low 10. High 23.

Burk's Falls - Bayfield Inlet.
Tuesday..Showers. High 21.
Tuesday night..Cloudy with 40 percent chance of showers. Low 12.
Wednesday..Cloudy with 60 percent chance of showers. High 18.
Wednesday night..Cloudy periods. Low 6.
Thursday..Sunny. High 19.
Thursday night..Cloudy periods. Low 6.
Friday..A mix of sun and cloud. High 22.
Friday night..Clear. Low 7.
Saturday..Sunny. High 23.
Normals for the period..Low 12. High 22.

End
$$$$^^

What we are doing

Features

UV Index and sun protection

Be weather wise!

Extreme Heat Protection

Be prepared!

Lightning Safety

When thunder roars, GO INDOORS!

Date modified: