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St. Thomas, ON

Current Conditions

Mostly Cloudy

Mostly Cloudy

-3°C26°F

Wind:
SE 9 km/h
SE 6 mph
Wind Chill:
-7
19
More details
Temperature:
-3.2°C
26.2° F
Pressure:
103.0 kPa
30.4 inches
Dew point:
-5.4°C
22.3°F
Visibility:
24 km
15 miles
Humidity:
84%
Date:
7:00 PM EST Saturday 7 December 2019
Observed at:
London Int'l Airport
Past 24 hour ConditionsPast 24 hour Conditions
Weather Radar
Satellite
Lightning
Alerts
Jet Stream
Hourly Forecast
Historical Weather

ForecastForecast issued: 3:30 PM EST Saturday 7 December 2019

Detailed ForecastForecast issued: 3:30 PM EST Saturday 7 December 2019

A few clouds
Tonight
-3°C27°F
A few clouds. Wind becoming south 20 km/h after midnight. Low minus 3 with temperature rising to plus 3 by morning. Wind chill minus 5 this evening.
A mix of sun and cloud
Sun, 8 Dec
8°C46°F
Mainly sunny. Increasing cloudiness in the afternoon. Wind south 20 km/h becoming southwest 40 gusting to 60 in the morning. High 8. UV index 1 or low.
Night:  Cloudy with 40 percent chance of showers. Rain beginning before morning. Wind south 20 km/h gusting to 40. Temperature steady near 7.
Rain
Mon, 9 Dec
9°C48°F
Rain. High 9.
Night:  Rain showers or flurries. Windy. Low zero.
Chance of flurries
Tue, 10 Dec
-1°C30°F
Cloudy with 40 percent chance of flurries. High minus 1.
Night:  Cloudy with 30 percent chance of flurries. Low minus 7.
Chance of flurries
Wed, 11 Dec
-6°C21°F
Cloudy with 60 percent chance of flurries. High minus 6.
Night:  Cloudy with 60 percent chance of flurries. Low minus 10.
A mix of sun and cloud
Thu, 12 Dec
-6°C21°F
A mix of sun and cloud. High minus 6.
Night:  Cloudy periods. Low minus 8.
Cloudy
Fri, 13 Dec
-1°C30°F
Cloudy. High minus 1.
Normals:
Max 3°C.37°F. Min -4°C.25°F.
Sunrise:
7:41 EST
Sunset:
16:51 EST

Averages and extremes

02 December
Average high
  • 3.1°C37.6°F
Average low
  • -3.9°C25.0°F
Highest temperature (1940-2001)
  • 15.7°C60.3°F
  • 1982
Lowest temperature (1940-2001)
  • -23.9°C-11.0°F
  • 1944
Greatest precipitation (1940-2016)
  • 29.2 mm1.15 inches
  • 1986
Greatest rainfall (1940-2016)
  • 23.9 mm0.94 inches
  • 2007
Greatest snowfall (1940-2016)
  • 21.0 cm8.27 inches
  • 2005
Most snow on the ground (1955-2016)
  • 23.0 cm9.06 inches
  • 1958
Monthly frequency of precipitation
  • 58 %

Note that more recent Averages and Extremes information for this location may be available. Please visit the Historical Climate Data's Almanac Averages and Extremes page.

03 December
Average high
  • 2.9°C37.2°F
Average low
  • -4.1°C24.6°F
Highest temperature (1940-2001)
  • 18.5°C65.3°F
  • 1982
Lowest temperature (1940-2001)
  • -22.2°C-8.0°F
  • 1966
Greatest precipitation (1940-2016)
  • 29.0 mm1.14 inches
  • 1990
Greatest rainfall (1940-2016)
  • 19.3 mm0.76 inches
  • 1955
Greatest snowfall (1940-2016)
  • 16.5 cm6.5 inches
  • 2007
Most snow on the ground (1955-2016)
  • 23.0 cm9.06 inches
  • 2005
Monthly frequency of precipitation
  • 58 %

Note that more recent Averages and Extremes information for this location may be available. Please visit the Historical Climate Data's Almanac Averages and Extremes page.

04 December
Average high
  • 2.7°C36.9°F
Average low
  • -4.3°C24.3°F
Highest temperature (1940-2001)
  • 16.7°C62.1°F
  • 1941
Lowest temperature (1940-2001)
  • -22.8°C-9.0°F
  • 1966
Greatest precipitation (1940-2016)
  • 23.4 mm0.92 inches
  • 2011
Greatest rainfall (1940-2016)
  • 23.4 mm0.92 inches
  • 2011
Greatest snowfall (1940-2016)
  • 23.6 cm9.29 inches
  • 1991
Most snow on the ground (1955-2016)
  • 20.0 cm7.87 inches
  • 2005
Monthly frequency of precipitation
  • 58 %

Note that more recent Averages and Extremes information for this location may be available. Please visit the Historical Climate Data's Almanac Averages and Extremes page.

05 December
Average high
  • 2.4°C36.3°F
Average low
  • -4.6°C23.7°F
Highest temperature (1940-2001)
  • 16.4°C61.5°F
  • 2001
Lowest temperature (1940-2001)
  • -12.3°C9.9°F
  • 1991
Greatest precipitation (1940-2016)
  • 31.4 mm1.24 inches
  • 2011
Greatest rainfall (1940-2016)
  • 25.4 mm1.0 inches
  • 2011
Greatest snowfall (1940-2016)
  • 35.0 cm13.78 inches
  • 2010
Most snow on the ground (1955-2016)
  • 25.0 cm9.84 inches
  • 1991
Monthly frequency of precipitation
  • 58 %

Note that more recent Averages and Extremes information for this location may be available. Please visit the Historical Climate Data's Almanac Averages and Extremes page.

06 December
Average high
  • 2.2°C36.0°F
Average low
  • -4.8°C23.4°F
Highest temperature (1940-2001)
  • 17.8°C64.0°F
  • 1998
Lowest temperature (1940-2001)
  • -14.4°C6.1°F
  • 1958
Greatest precipitation (1940-2016)
  • 37.9 mm1.49 inches
  • 1983
Greatest rainfall (1940-2016)
  • 31.8 mm1.25 inches
  • 1966
Greatest snowfall (1940-2016)
  • 26.0 cm10.24 inches
  • 2010
Most snow on the ground (1955-2016)
  • 35.0 cm13.78 inches
  • 1991
Monthly frequency of precipitation
  • 58 %

Note that more recent Averages and Extremes information for this location may be available. Please visit the Historical Climate Data's Almanac Averages and Extremes page.

07 December
Average high
  • 2.0°C35.6°F
Average low
  • -5.0°C23.0°F
Highest temperature (1940-2001)
  • 15.6°C60.1°F
  • 1951
Lowest temperature (1940-2001)
  • -15.6°C3.9°F
  • 1976
Greatest precipitation (1940-2016)
  • 42.9 mm1.69 inches
  • 1950
Greatest rainfall (1940-2016)
  • 41.9 mm1.65 inches
  • 1950
Greatest snowfall (1940-2016)
  • 57.0 cm22.44 inches
  • 1977
Most snow on the ground (1955-2016)
  • 50.0 cm19.69 inches
  • 2010
Monthly frequency of precipitation
  • 58 %

Note that more recent Averages and Extremes information for this location may be available. Please visit the Historical Climate Data's Almanac Averages and Extremes page.

08 December
Average high
  • 1.8°C35.2°F
Average low
  • -5.2°C22.6°F
Highest temperature (1940-2001)
  • 15.6°C60.1°F
  • 1966
Lowest temperature (1940-2001)
  • -19.7°C-3.5°F
  • 1977
Greatest precipitation (1940-2016)
  • 18.8 mm0.74 inches
  • 1977
Greatest rainfall (1940-2016)
  • 14.3 mm0.56 inches
  • 1980
Greatest snowfall (1940-2016)
  • 21.0 cm8.27 inches
  • 1977
Most snow on the ground (1955-2016)
  • 59.0 cm23.23 inches
  • 2010
Monthly frequency of precipitation
  • 58 %

Note that more recent Averages and Extremes information for this location may be available. Please visit the Historical Climate Data's Almanac Averages and Extremes page.

09 December
Average high
  • 1.6°C34.9°F
Average low
  • -5.4°C22.3°F
Highest temperature (1941-2001)
  • 12.2°C54.0°F
  • 1946
Lowest temperature (1941-2001)
  • -21.7°C-7.1°F
  • 1968
Greatest precipitation (1940-2016)
  • 20.1 mm0.79 inches
  • 2008
Greatest rainfall (1940-2016)
  • 20.1 mm0.79 inches
  • 2008
Greatest snowfall (1940-2016)
  • 22.6 cm8.9 inches
  • 1977
Most snow on the ground (1955-2016)
  • 57.0 cm22.44 inches
  • 2010
Monthly frequency of precipitation
  • 58 %

Note that more recent Averages and Extremes information for this location may be available. Please visit the Historical Climate Data's Almanac Averages and Extremes page.

10 December
Average high
  • 1.4°C34.5°F
Average low
  • -5.6°C21.9°F
Highest temperature (1940-2001)
  • 17.2°C63.0°F
  • 1971
Lowest temperature (1940-2001)
  • -22.8°C-9.0°F
  • 1968
Greatest precipitation (1940-2016)
  • 22.6 mm0.89 inches
  • 1966
Greatest rainfall (1940-2016)
  • 13.5 mm0.53 inches
  • 1971
Greatest snowfall (1940-2016)
  • 16.8 cm6.61 inches
  • 1945
Most snow on the ground (1955-2016)
  • 70.0 cm27.56 inches
  • 1977
Monthly frequency of precipitation
  • 58 %

Note that more recent Averages and Extremes information for this location may be available. Please visit the Historical Climate Data's Almanac Averages and Extremes page.

11 December
Average high
  • 1.3°C34.3°F
Average low
  • -5.8°C21.6°F
Highest temperature (1940-2001)
  • 13.3°C55.9°F
  • 1949
Lowest temperature (1940-2001)
  • -26.9°C-16.4°F
  • 1977
Greatest precipitation (1940-2016)
  • 22.7 mm0.89 inches
  • 2007
Greatest rainfall (1940-2016)
  • 18.3 mm0.72 inches
  • 1959
Greatest snowfall (1940-2016)
  • 22.0 cm8.66 inches
  • 2016
Most snow on the ground (1955-2016)
  • 68.0 cm26.77 inches
  • 1977
Monthly frequency of precipitation
  • 58 %

Note that more recent Averages and Extremes information for this location may be available. Please visit the Historical Climate Data's Almanac Averages and Extremes page.

12 December
Average high
  • 1.1°C34.0°F
Average low
  • -5.9°C21.4°F
Highest temperature (1940-2001)
  • 12.8°C55.0°F
  • 1946
Lowest temperature (1940-2001)
  • -20.5°C-4.9°F
  • 1988
Greatest precipitation (1940-2016)
  • 34.0 mm1.34 inches
  • 1946
Greatest rainfall (1940-2016)
  • 34.0 mm1.34 inches
  • 1946
Greatest snowfall (1940-2016)
  • 16.0 cm6.3 inches
  • 2010
Most snow on the ground (1955-2016)
  • 65.0 cm25.59 inches
  • 1977
Monthly frequency of precipitation
  • 58 %

Note that more recent Averages and Extremes information for this location may be available. Please visit the Historical Climate Data's Almanac Averages and Extremes page.

Yesterday's Data
Max:
2.7 °C36.9 °F
Min:
-1.9 °C28.6 °F
Total Precipitation:
0.4 mm0.02 in

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