Annual Weather Averages Near St. Catharines
Averages are for Saint Catharines Airport, which is 8 kilometers from St. Catharines.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in St. Catharines
High Temp: 27 °C
Low Temp: -6 °C
Mean Temp: 10 °C
Precipitation: 62.9 mm
Humidity: 71%
Dew Point: 5 °C
Wind: 28 km/h
Pressure: 101.63 kPa
Visibility: 21 km
January Climate & Weather Averages in St. Catharines
High Temp: 0 °C
Low Temp: -6 °C
Mean Temp: -3 °C
Precipitation: 62.3 mm
Humidity: 76%
Dew Point: -7 °C
Wind: 33 km/h
Pressure: 101.75 kPa
Visibility: 18 km
February Climate & Weather Averages in St. Catharines
High Temp: 1 °C
Low Temp: -6 °C
Mean Temp: -3 °C
Precipitation: 42.6 mm
Humidity: 73%
Dew Point: -7 °C
Wind: 32 km/h
Pressure: 101.75 kPa
Visibility: 19 km
March Climate & Weather Averages in St. Catharines
High Temp: 5 °C
Low Temp: -2 °C
Mean Temp: 2 °C
Precipitation: 49.9 mm
Humidity: 69%
Dew Point: -3 °C
Wind: 31 km/h
Pressure: 101.76 kPa
Visibility: 20 km
April Climate & Weather Averages in St. Catharines
High Temp: 12 °C
Low Temp: 3 °C
Mean Temp: 8 °C
Precipitation: 74.8 mm
Humidity: 66%
Dew Point: 2 °C
Wind: 30 km/h
Pressure: 101.51 kPa
Visibility: 21 km
May Climate & Weather Averages in St. Catharines
High Temp: 19 °C
Low Temp: 9 °C
Mean Temp: 14 °C
Precipitation: 66.8 mm
Humidity: 65%
Dew Point: 8 °C
Wind: 27 km/h
Pressure: 101.53 kPa
Visibility: 22 km
June Climate & Weather Averages in St. Catharines
High Temp: 25 °C
Low Temp: 15 °C
Mean Temp: 20 °C
Precipitation: 75.4 mm
Humidity: 66%
Dew Point: 14 °C
Wind: 25 km/h
Pressure: 101.38 kPa
Visibility: 21 km
July Climate & Weather Averages in St. Catharines
High Temp: 27 °C
Low Temp: 18 °C
Mean Temp: 23 °C
Precipitation: 75.1 mm
Humidity: 66%
Dew Point: 17 °C
Wind: 25 km/h
Pressure: 101.41 kPa
Visibility: 21 km
August Climate & Weather Averages in St. Catharines
High Temp: 26 °C
Low Temp: 17 °C
Mean Temp: 22 °C
Precipitation: 53.2 mm
Humidity: 69%
Dew Point: 17 °C
Wind: 23 km/h
Pressure: 101.56 kPa
Visibility: 21 km
September Climate & Weather Averages in St. Catharines
High Temp: 23 °C
Low Temp: 13 °C
Mean Temp: 18 °C
Precipitation: 69.9 mm
Humidity: 71%
Dew Point: 13 °C
Wind: 25 km/h
Pressure: 101.71 kPa
Visibility: 22 km
October Climate & Weather Averages in St. Catharines
High Temp: 15 °C
Low Temp: 7 °C
Mean Temp: 11 °C
Precipitation: 64.6 mm
Humidity: 74%
Dew Point: 7 °C
Wind: 27 km/h
Pressure: 101.67 kPa
Visibility: 22 km
November Climate & Weather Averages in St. Catharines
High Temp: 9 °C
Low Temp: 2 °C
Mean Temp: 5 °C
Precipitation: 62.8 mm
Humidity: 74%
Dew Point: 1 °C
Wind: 29 km/h
Pressure: 101.78 kPa
Visibility: 21 km
December Climate & Weather Averages in St. Catharines
High Temp: 3 °C
Low Temp: -3 °C
Mean Temp: 0 °C
Precipitation: 58.0 mm
Humidity: 77%
Dew Point: -3 °C
Wind: 30 km/h
Pressure: 101.75 kPa
Visibility: 19 km