Cornwall, ON Weekly 7-Day Weather

Wednesday

Sep 30, 2026

High 22°C • Low 11°C Overcast

Morning

14°C

Feels 13°C

Overcast

💧 23%

Afternoon

21°C

Feels 20°C

Overcast

💧 15%

Evening

18°C

Feels 17°C

Cloudy

💧 17%

Overnight

11°C

Feels 10°C

Overcast

💧 32%

Thursday

Oct 1, 2026

High 21°C • Low 16°C Overcast

Morning

19°C

Feels 16°C

Overcast

💧 19%

Afternoon

19°C

Feels 18°C

Cloudy

💧 19%

Evening

18°C

Feels 18°C

Cloudy

💧 22%

Overnight

17°C

Feels 17°C

Patchy rain nearby

💧 31%

Friday

Oct 2, 2026

High 21°C • Low 12°C Light rain

Morning

17°C

Feels 17°C

Mist

💧 50%

Afternoon

17°C

Feels 17°C

Light rain

💧 72%

Evening

14°C

Feels 13°C

Patchy rain nearby

💧 38%

Overnight

20°C

Feels 18°C

Cloudy

💧 13%

Saturday

Oct 3, 2026

High 15°C • Low 6°C Sunny

Morning

9°C

Feels 7°C

Sunny

💧 10%

Afternoon

15°C

Feels 12°C

Sunny

💧 1%

Evening

9°C

Feels 9°C

Partly Cloudy

💧 7%

Overnight

9°C

Feels 8°C

Clear

💧 15%

Sunday

Oct 4, 2026

High 14°C • Low 5°C Overcast

Morning

9°C

Feels 8°C

Overcast

💧 19%

Afternoon

13°C

Feels 11°C

Overcast

💧 15%

Evening

11°C

Feels 10°C

Overcast

💧 21%

Overnight

6°C

Feels 4°C

Clear

💧 12%

Monday

Oct 5, 2026

High 12°C • Low 4°C Patchy rain nearby

Morning

8°C

Feels 6°C

Patchy rain nearby

💧 22%

Afternoon

11°C

Feels 9°C

Patchy rain nearby

💧 17%

Evening

8°C

Feels 6°C

Patchy rain nearby

💧 22%

Overnight

8°C

Feels 6°C

Mist

💧 40%

Tuesday

Oct 6, 2026

High 11°C • Low 1°C Sunny

Morning

4°C

Feels 2°C

Sunny

💧 8%

Afternoon

11°C

Feels 8°C

Overcast

💧 3%

Evening

7°C

Feels 4°C

Cloudy

💧 10%

Overnight

3°C

Feels 1°C

Partly Cloudy

💧 20%

Cornwall, ON

Hourly Forecast

September 1, 2026

7 Day Forecast

Precipitation Map

Cornwall, ON Weekly 7-Day Weather

Wednesday

Sep 30, 2026

High 22°C • Low 11°C Overcast

Morning

14°C

Feels 13°C

Overcast

💧 23%

Afternoon

21°C

Feels 20°C

Overcast

💧 15%

Evening

18°C

Feels 17°C

Cloudy

💧 17%

Overnight

11°C

Feels 10°C

Overcast

💧 32%

Thursday

Oct 1, 2026

High 21°C • Low 16°C Overcast

Morning

19°C

Feels 16°C

Overcast

💧 19%

Afternoon

19°C

Feels 18°C

Cloudy

💧 19%

Evening

18°C

Feels 18°C

Cloudy

💧 22%

Overnight

17°C

Feels 17°C

Patchy rain nearby

💧 31%

Friday

Oct 2, 2026

High 21°C • Low 12°C Light rain

Morning

17°C

Feels 17°C

Mist

💧 50%

Afternoon

17°C

Feels 17°C

Light rain

💧 72%

Evening

14°C

Feels 13°C

Patchy rain nearby

💧 38%

Overnight

20°C

Feels 18°C

Cloudy

💧 13%

Saturday

Oct 3, 2026

High 15°C • Low 6°C Sunny

Morning

9°C

Feels 7°C

Sunny

💧 10%

Afternoon

15°C

Feels 12°C

Sunny

💧 1%

Evening

9°C

Feels 9°C

Partly Cloudy

💧 7%

Overnight

9°C

Feels 8°C

Clear

💧 15%

Sunday

Oct 4, 2026

High 14°C • Low 5°C Overcast

Morning

9°C

Feels 8°C

Overcast

💧 19%

Afternoon

13°C

Feels 11°C

Overcast

💧 15%

Evening

11°C

Feels 10°C

Overcast

💧 21%

Overnight

6°C

Feels 4°C

Clear

💧 12%

Monday

Oct 5, 2026

High 12°C • Low 4°C Patchy rain nearby

Morning

8°C

Feels 6°C

Patchy rain nearby

💧 22%

Afternoon

11°C

Feels 9°C

Patchy rain nearby

💧 17%

Evening

8°C

Feels 6°C

Patchy rain nearby

💧 22%

Overnight

8°C

Feels 6°C

Mist

💧 40%

Tuesday

Oct 6, 2026

High 11°C • Low 1°C Sunny

Morning

4°C

Feels 2°C

Sunny

💧 8%

Afternoon

11°C

Feels 8°C

Overcast

💧 3%

Evening

7°C

Feels 4°C

Cloudy

💧 10%

Overnight

3°C

Feels 1°C

Partly Cloudy

💧 20%

Cornwall, ON Weekly 7-Day Weather

Wednesday

Sep 30, 2026

High 22°C • Low 11°C Overcast

Morning

14°C

Feels 13°C

Overcast

💧 23%

Afternoon

21°C

Feels 20°C

Overcast

💧 15%

Evening

18°C

Feels 17°C

Cloudy

💧 17%

Overnight

11°C

Feels 10°C

Overcast

💧 32%

Thursday

Oct 1, 2026

High 21°C • Low 16°C Overcast

Morning

19°C

Feels 16°C

Overcast

💧 19%

Afternoon

19°C

Feels 18°C

Cloudy

💧 19%

Evening

18°C

Feels 18°C

Cloudy

💧 22%

Overnight

17°C

Feels 17°C

Patchy rain nearby

💧 31%

Friday

Oct 2, 2026

High 21°C • Low 12°C Light rain

Morning

17°C

Feels 17°C

Mist

💧 50%

Afternoon

17°C

Feels 17°C

Light rain

💧 72%

Evening

14°C

Feels 13°C

Patchy rain nearby

💧 38%

Overnight

20°C

Feels 18°C

Cloudy

💧 13%

Saturday

Oct 3, 2026

High 15°C • Low 6°C Sunny

Morning

9°C

Feels 7°C

Sunny

💧 10%

Afternoon

15°C

Feels 12°C

Sunny

💧 1%

Evening

9°C

Feels 9°C

Partly Cloudy

💧 7%

Overnight

9°C

Feels 8°C

Clear

💧 15%

Sunday

Oct 4, 2026

High 14°C • Low 5°C Overcast

Morning

9°C

Feels 8°C

Overcast

💧 19%

Afternoon

13°C

Feels 11°C

Overcast

💧 15%

Evening

11°C

Feels 10°C

Overcast

💧 21%

Overnight

6°C

Feels 4°C

Clear

💧 12%

Monday

Oct 5, 2026

High 12°C • Low 4°C Patchy rain nearby

Morning

8°C

Feels 6°C

Patchy rain nearby

💧 22%

Afternoon

11°C

Feels 9°C

Patchy rain nearby

💧 17%

Evening

8°C

Feels 6°C

Patchy rain nearby

💧 22%

Overnight

8°C

Feels 6°C

Mist

💧 40%

Tuesday

Oct 6, 2026

High 11°C • Low 1°C Sunny

Morning

4°C

Feels 2°C

Sunny

💧 8%

Afternoon

11°C

Feels 8°C

Overcast

💧 3%

Evening

7°C

Feels 4°C

Cloudy

💧 10%

Overnight

3°C

Feels 1°C

Partly Cloudy

💧 20%