Currently: 10 °C. Partly cloudy. (Weather station: Sarnia Airport, Canada). See more current weather
Annual Weather Averages Near Sarnia
Averages are for Sarnia Airport, which is 6 kilometers from Sarnia.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Sarnia
High Temp: 26 °C
Low Temp: -8 °C
Mean Temp: 9 °C
Precipitation: 72.7 mm
Humidity: 75%
Dew Point: 4 °C
Wind: 27 km/h
Pressure: 101.66 kPa
Visibility: 16 km
January Climate & Weather Averages in Sarnia
High Temp: -1 °C
Low Temp: -8 °C
Mean Temp: -4 °C
Precipitation: 68.4 mm
Humidity: 80%
Dew Point: -8 °C
Wind: 32 km/h
Pressure: 101.75 kPa
Visibility: 14 km
February Climate & Weather Averages in Sarnia
High Temp: 0 °C
Low Temp: -8 °C
Mean Temp: -4 °C
Precipitation: 47.0 mm
Humidity: 77%
Dew Point: -7 °C
Wind: 30 km/h
Pressure: 101.77 kPa
Visibility: 14 km
March Climate & Weather Averages in Sarnia
High Temp: 5 °C
Low Temp: -3 °C
Mean Temp: 1 °C
Precipitation: 56.6 mm
Humidity: 74%
Dew Point: -4 °C
Wind: 31 km/h
Pressure: 101.79 kPa
Visibility: 16 km
April Climate & Weather Averages in Sarnia
High Temp: 12 °C
Low Temp: 2 °C
Mean Temp: 7 °C
Precipitation: 73.4 mm
Humidity: 70%
Dew Point: 1 °C
Wind: 31 km/h
Pressure: 101.53 kPa
Visibility: 17 km
May Climate & Weather Averages in Sarnia
High Temp: 19 °C
Low Temp: 7 °C
Mean Temp: 13 °C
Precipitation: 78.4 mm
Humidity: 71%
Dew Point: 7 °C
Wind: 27 km/h
Pressure: 101.54 kPa
Visibility: 17 km
June Climate & Weather Averages in Sarnia
High Temp: 24 °C
Low Temp: 13 °C
Mean Temp: 19 °C
Precipitation: 86.4 mm
Humidity: 73%
Dew Point: 13 °C
Wind: 23 km/h
Pressure: 101.43 kPa
Visibility: 16 km
July Climate & Weather Averages in Sarnia
High Temp: 26 °C
Low Temp: 16 °C
Mean Temp: 21 °C
Precipitation: 88.8 mm
Humidity: 74%
Dew Point: 16 °C
Wind: 21 km/h
Pressure: 101.48 kPa
Visibility: 17 km
August Climate & Weather Averages in Sarnia
High Temp: 26 °C
Low Temp: 16 °C
Mean Temp: 21 °C
Precipitation: 74.3 mm
Humidity: 76%
Dew Point: 16 °C
Wind: 20 km/h
Pressure: 101.62 kPa
Visibility: 16 km
September Climate & Weather Averages in Sarnia
High Temp: 22 °C
Low Temp: 12 °C
Mean Temp: 17 °C
Precipitation: 85.7 mm
Humidity: 77%
Dew Point: 12 °C
Wind: 22 km/h
Pressure: 101.75 kPa
Visibility: 16 km
October Climate & Weather Averages in Sarnia
High Temp: 15 °C
Low Temp: 6 °C
Mean Temp: 11 °C
Precipitation: 69.6 mm
Humidity: 76%
Dew Point: 6 °C
Wind: 27 km/h
Pressure: 101.73 kPa
Visibility: 16 km
November Climate & Weather Averages in Sarnia
High Temp: 8 °C
Low Temp: 1 °C
Mean Temp: 4 °C
Precipitation: 73.0 mm
Humidity: 77%
Dew Point: 0 °C
Wind: 30 km/h
Pressure: 101.77 kPa
Visibility: 15 km
December Climate & Weather Averages in Sarnia
High Temp: 2 °C
Low Temp: -4 °C
Mean Temp: -1 °C
Precipitation: 70.8 mm
Humidity: 80%
Dew Point: -4 °C
Wind: 30 km/h
Pressure: 101.77 kPa
Visibility: 14 km