St. Thomas, ON

Current Conditions

Mainly Clear

Mainly Clear

-1°C31°F

Wind:
ESE 9 km/h
ESE 5 mph
Wind Chill:
-4
25
More details
Temperature:
-0.7°C
30.7° F
Pressure:
102.5 kPa
30.3 inches
Dew point:
-2.0°C
28.4°F
Visibility:
16 km
10 miles
Humidity:
91%
Date:
6:00 PM EST Thursday 13 December 2018
Observed at:
London Int'l Airport
Past 24 hour ConditionsPast 24 hour Conditions
Weather Radar
Satellite
Lightning
Alerts
Jet Stream
Hourly Forecast

ForecastForecast issued: 3:30 PM EST Thursday 13 December 2018

Detailed ForecastForecast issued: 3:30 PM EST Thursday 13 December 2018

A few showers
Tonight
1°C34°F
Partly cloudy. Becoming cloudy this evening. A few showers beginning before morning. Fog patches developing after midnight. Low plus 1.
A few showers
Fri, 14 Dec
7°C45°F
A few showers ending in the morning then mainly cloudy. Fog patches dissipating in the morning. Wind becoming southwest 20 km/h in the morning. High 7. UV index 1 or low.
Night:  Mainly cloudy. Wind becoming northeast 20 km/h before morning. Low zero.
Periods of rain
Sat, 15 Dec
6°C43°F
A mix of sun and cloud with 40 percent chance of rain. High 6.
Night:  Cloudy periods. Low plus 2.
A mix of sun and cloud
Sun, 16 Dec
5°C41°F
A mix of sun and cloud. High plus 5.
Night:  Cloudy periods. Low zero.
A mix of sun and cloud
Mon, 17 Dec
1°C34°F
A mix of sun and cloud. High plus 1.
Night:  Cloudy periods. Low minus 6.
Sunny
Tue, 18 Dec
-1°C30°F
Sunny. High minus 1.
Night:  Clear. Low minus 4.
Chance of showers
Wed, 19 Dec
2°C36°F
A mix of sun and cloud with 30 percent chance of showers. High plus 2.
Normals:
Max 1°C.34°F. Min -5°C.23°F.
Sunrise:
7:47 EST
Sunset:
16:51 EST

Averages and extremes

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.

13 December
Average high
  • 0.9°C33.6°F
Average low
  • -6.1°C21.0°F
Highest temperature (1940-2001)
  • 13.1°C55.6°F
  • 1991
Lowest temperature (1940-2001)
  • -20.7°C-5.3°F
  • 2000
Greatest precipitation (1940-2015)
  • 11.9 mm0.47 inches
  • 1968
Greatest rainfall (1940-2015)
  • 11.9 mm0.47 inches
  • 1968
Greatest snowfall (1940-2015)
  • 12.6 cm4.96 inches
  • 2000
Most snow on the ground (1955-2016)
  • 50.0 cm19.69 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.

14 December
Average high
  • 0.7°C33.3°F
Average low
  • -6.3°C20.7°F
Highest temperature (1940-2001)
  • 13.9°C57.0°F
  • 1975
Lowest temperature (1940-2001)
  • -20.6°C-5.1°F
  • 1958
Greatest precipitation (1940-2016)
  • 23.5 mm0.93 inches
  • 1999
Greatest rainfall (1940-2016)
  • 21.7 mm0.85 inches
  • 1977
Greatest snowfall (1940-2016)
  • 18.5 cm7.28 inches
  • 2010
Most snow on the ground (1955-2016)
  • 38.0 cm14.96 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.

15 December
Average high
  • 0.6°C33.1°F
Average low
  • -6.5°C20.3°F
Highest temperature (1940-2001)
  • 13.9°C57.0°F
  • 1971
Lowest temperature (1940-2001)
  • -20.6°C-5.1°F
  • 1943
Greatest precipitation (1940-2016)
  • 27.8 mm1.09 inches
  • 1987
Greatest rainfall (1940-2016)
  • 23.9 mm0.94 inches
  • 1948
Greatest snowfall (1940-2016)
  • 21.8 cm8.58 inches
  • 1963
Most snow on the ground (1955-2016)
  • 51.0 cm20.08 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.

16 December
Average high
  • 0.4°C32.7°F
Average low
  • -6.7°C19.9°F
Highest temperature (1940-2001)
  • 14.3°C57.7°F
  • 1984
Lowest temperature (1940-2001)
  • -20.0°C-4.0°F
  • 1951
Greatest precipitation (1940-2016)
  • 20.6 mm0.81 inches
  • 2007
Greatest rainfall (1940-2016)
  • 13.6 mm0.54 inches
  • 2000
Greatest snowfall (1940-2016)
  • 20.0 cm7.87 inches
  • 2007
Most snow on the ground (1955-2016)
  • 51.0 cm20.08 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.

17 December
Average high
  • 0.2°C32.4°F
Average low
  • -6.8°C19.8°F
Highest temperature (1940-2001)
  • 12.3°C54.1°F
  • 1984
Lowest temperature (1940-2001)
  • -20.0°C-4.0°F
  • 1951
Greatest precipitation (1940-2016)
  • 19.8 mm0.78 inches
  • 1996
Greatest rainfall (1940-2016)
  • 19.8 mm0.78 inches
  • 1996
Greatest snowfall (1940-2016)
  • 12.2 cm4.8 inches
  • 1950
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.

18 December
Average high
  • 0.1°C32.2°F
Average low
  • -7.0°C19.4°F
Highest temperature (1940-2001)
  • 11.7°C53.1°F
  • 1967
Lowest temperature (1940-2001)
  • -18.7°C-1.7°F
  • 1989
Greatest precipitation (1940-2016)
  • 11.5 mm0.45 inches
  • 1986
Greatest rainfall (1940-2016)
  • 9.9 mm0.39 inches
  • 1957
Greatest snowfall (1940-2016)
  • 17.5 cm6.89 inches
  • 1975
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.

Yesterday's Data
Max:
0.9 °C33.6 °F
Min:
-1.9 °C28.6 °F
Total Precipitation:
0.0 mm0.00 in
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