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Climate & Weather Averages in St. Thomas, Ontario, Canada

Currently: 5 °C. More clouds than sun. (Weather station: London Weather Station, Canada). See more current weather

Annual Weather Averages Near St. Thomas

Averages are for London Weather Station, which is 29 kilometers from St. Thomas.

Based on weather reports collected during 1992–2021.

All Year Climate & Weather Averages in St. Thomas

High Temp: 27 °C

Low Temp: -9 °C

Mean Temp: 8 °C

Precipitation: 80.1 mm

Humidity: 76%

Dew Point: 4 °C

Wind: 26 km/h

Pressure: 1017 mbar

Visibility: 18 km

janvier Climate & Weather Averages in St. Thomas

High Temp: -2 °C

Low Temp: -9 °C

Mean Temp: -5 °C

Precipitation: 77.7 mm

Humidity: 81%

Dew Point: -8 °C

Wind: 31 km/h

Pressure: 1018 mbar

Visibility: 15 km

février Climate & Weather Averages in St. Thomas

High Temp: -1 °C

Low Temp: -9 °C

Mean Temp: -5 °C

Precipitation: 65.4 mm

Humidity: 78%

Dew Point: -8 °C

Wind: 30 km/h

Pressure: 1018 mbar

Visibility: 16 km

mars Climate & Weather Averages in St. Thomas

High Temp: 5 °C

Low Temp: -4 °C

Mean Temp: 0 °C

Precipitation: 66.5 mm

Humidity: 74%

Dew Point: -4 °C

Wind: 29 km/h

Pressure: 1018 mbar

Visibility: 18 km

avril Climate & Weather Averages in St. Thomas

High Temp: 12 °C

Low Temp: 1 °C

Mean Temp: 7 °C

Precipitation: 84.9 mm

Humidity: 69%

Dew Point: 1 °C

Wind: 30 km/h

Pressure: 1015 mbar

Visibility: 20 km

mai Climate & Weather Averages in St. Thomas

High Temp: 19 °C

Low Temp: 7 °C

Mean Temp: 13 °C

Precipitation: 87.4 mm

Humidity: 69%

Dew Point: 7 °C

Wind: 26 km/h

Pressure: 1016 mbar

Visibility: 20 km

juin Climate & Weather Averages in St. Thomas

High Temp: 24 °C

Low Temp: 13 °C

Mean Temp: 19 °C

Precipitation: 90.2 mm

Humidity: 72%

Dew Point: 13 °C

Wind: 22 km/h

Pressure: 1015 mbar

Visibility: 20 km

juillet Climate & Weather Averages in St. Thomas

High Temp: 27 °C

Low Temp: 15 °C

Mean Temp: 21 °C

Precipitation: 81.2 mm

Humidity: 74%

Dew Point: 16 °C

Wind: 20 km/h

Pressure: 1015 mbar

Visibility: 20 km

août Climate & Weather Averages in St. Thomas

High Temp: 26 °C

Low Temp: 14 °C

Mean Temp: 20 °C

Precipitation: 74.3 mm

Humidity: 77%

Dew Point: 16 °C

Wind: 19 km/h

Pressure: 1017 mbar

Visibility: 19 km

septembre Climate & Weather Averages in St. Thomas

High Temp: 22 °C

Low Temp: 11 °C

Mean Temp: 16 °C

Precipitation: 89.9 mm

Humidity: 77%

Dew Point: 12 °C

Wind: 21 km/h

Pressure: 1018 mbar

Visibility: 20 km

octobre Climate & Weather Averages in St. Thomas

High Temp: 15 °C

Low Temp: 5 °C

Mean Temp: 10 °C

Precipitation: 82.7 mm

Humidity: 79%

Dew Point: 6 °C

Wind: 25 km/h

Pressure: 1017 mbar

Visibility: 20 km

novembre Climate & Weather Averages in St. Thomas

High Temp: 7 °C

Low Temp: 0 °C

Mean Temp: 4 °C

Precipitation: 83.0 mm

Humidity: 80%

Dew Point: 0 °C

Wind: 28 km/h

Pressure: 1018 mbar

Visibility: 18 km

décembre Climate & Weather Averages in St. Thomas

High Temp: 1 °C

Low Temp: -5 °C

Mean Temp: -2 °C

Precipitation: 77.8 mm

Humidity: 82%

Dew Point: -4 °C

Wind: 30 km/h

Pressure: 1018 mbar

Visibility: 15 km

Quick Climate Info

Hottest Monthjuillet (21 °C avg)
Coldest Monthjanvier (-5 °C avg)
Wettest Monthjuin (90.2 mm avg)
Windiest Monthjanvier (31 km/h avg)
Annual precip.961.0 mm (per year)

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