Cornwall, Ontario Weather - Extended Forecast

Friday

Chance of showers

High:
15°C

Cloudy with 30 percent chance of showers. High 15.

Friday Night

Chance of showers

Overnight low:
1°C

Cloudy periods with 40 percent chance of showers. Low plus 1.

Saturday

Chance of showers

High:
21°C

Saturday Night

Cloudy periods

Overnight low:
5°C

Sunday

Sunny

High:
19°C

Sunday Night

Clear

Overnight low:
9°C

Monday

Sunny

High:
28°C

Monday Night

Clear

Overnight low:
12°C