Home   Weather   Cornwall Island   Climate
Flag for Canada

Climate & Weather Averages in Cornwall Island, Ontario, Canada

Currently: 21 °C. Mild. (Weather station: St Anicet, Canada). See more current weather

Annual Weather Averages in St Anicet

St Anicet is 35 kilometers from Cornwall Island, so the actual climate in Cornwall Island can vary a bit.

Based on weather reports collected during 1992–2021.

All Year Climate & Weather Averages in Cornwall Island

High Temp: 27 °C

Low Temp: -14 °C

Mean Temp: 7 °C

Precipitation: 78.0 mm

Humidity: 74%

Dew Point: 2 °C

Wind: 19 km/h

Pressure: 101.55 kPa

Visibility: 15 km

January Climate & Weather Averages in Cornwall Island

High Temp: -4 °C

Low Temp: -14 °C

Mean Temp: -9 °C

Precipitation: 69.1 mm

Humidity: 78%

Dew Point: -12 °C

Wind: 23 km/h

Pressure: 101.69 kPa

Visibility: 13 km

February Climate & Weather Averages in Cornwall Island

High Temp: -3 °C

Low Temp: -13 °C

Mean Temp: -8 °C

Precipitation: 60.5 mm

Humidity: 74%

Dew Point: -12 °C

Wind: 23 km/h

Pressure: 101.69 kPa

Visibility: 13 km

March Climate & Weather Averages in Cornwall Island

High Temp: 3 °C

Low Temp: -7 °C

Mean Temp: -2 °C

Precipitation: 63.8 mm

Humidity: 71%

Dew Point: -7 °C

Wind: 23 km/h

Pressure: 101.68 kPa

Visibility: 14 km

April Climate & Weather Averages in Cornwall Island

High Temp: 11 °C

Low Temp: 1 °C

Mean Temp: 6 °C

Precipitation: 81.6 mm

Humidity: 65%

Dew Point: 0 °C

Wind: 23 km/h

Pressure: 101.45 kPa

Visibility: 15 km

May Climate & Weather Averages in Cornwall Island

High Temp: 20 °C

Low Temp: 7 °C

Mean Temp: 13 °C

Precipitation: 75.6 mm

Humidity: 64%

Dew Point: 7 °C

Wind: 20 km/h

Pressure: 101.44 kPa

Visibility: 16 km

June Climate & Weather Averages in Cornwall Island

High Temp: 25 °C

Low Temp: 13 °C

Mean Temp: 19 °C

Precipitation: 96.2 mm

Humidity: 71%

Dew Point: 13 °C

Wind: 18 km/h

Pressure: 101.27 kPa

Visibility: 15 km

July Climate & Weather Averages in Cornwall Island

High Temp: 27 °C

Low Temp: 15 °C

Mean Temp: 21 °C

Precipitation: 86.1 mm

Humidity: 76%

Dew Point: 16 °C

Wind: 15 km/h

Pressure: 101.28 kPa

Visibility: 15 km

August Climate & Weather Averages in Cornwall Island

High Temp: 26 °C

Low Temp: 14 °C

Mean Temp: 20 °C

Precipitation: 77.4 mm

Humidity: 78%

Dew Point: 16 °C

Wind: 14 km/h

Pressure: 101.46 kPa

Visibility: 15 km

September Climate & Weather Averages in Cornwall Island

High Temp: 22 °C

Low Temp: 9 °C

Mean Temp: 16 °C

Precipitation: 90.0 mm

Humidity: 79%

Dew Point: 12 °C

Wind: 14 km/h

Pressure: 101.65 kPa

Visibility: 15 km

October Climate & Weather Averages in Cornwall Island

High Temp: 14 °C

Low Temp: 4 °C

Mean Temp: 9 °C

Precipitation: 92.3 mm

Humidity: 78%

Dew Point: 5 °C

Wind: 17 km/h

Pressure: 101.62 kPa

Visibility: 15 km

November Climate & Weather Averages in Cornwall Island

High Temp: 7 °C

Low Temp: -2 °C

Mean Temp: 2 °C

Precipitation: 71.1 mm

Humidity: 78%

Dew Point: -1 °C

Wind: 20 km/h

Pressure: 101.71 kPa

Visibility: 14 km

December Climate & Weather Averages in Cornwall Island

High Temp: 0 °C

Low Temp: -8 °C

Mean Temp: -4 °C

Precipitation: 72.7 mm

Humidity: 81%

Dew Point: -7 °C

Wind: 22 km/h

Pressure: 101.69 kPa

Visibility: 13 km

Quick Climate Info

Hottest Month July (21 °C avg)
Coldest Month January (-9 °C avg)
Wettest Month June (96.2 mm avg)
Windiest Month February (23 km/h avg)
Annual precip. 936.5 mm (per year)

Weather by CustomWeather, © 2025