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St. Thomas, ON

Current Conditions

Light Snow

Light Snow

-1°C30°F

Wind:
W 7 km/h
W 4 mph
Wind Chill:
-4
25
More details
Temperature:
-1.2°C
29.8° F
Pressure:
100.5 kPa
29.7 inches
Dew point:
-1.6°C
29.1°F
Visibility:
15 km
9 miles
Humidity:
98%
Date:
11:00 PM EST Sunday 17 January 2021
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 Sunday 17 January 2021

Detailed ForecastForecast issued: 3:30 PM EST Sunday 17 January 2021

Periods of snow
Tonight
0°C32°F
Periods of snow ending near midnight then cloudy with 40 percent chance of flurries. Local amount 2 cm. Temperature steady near zero.
Chance of flurries
Mon, 18 Jan
0°C32°F
Cloudy. 40 percent chance of flurries in the morning. A few flurries beginning near noon. Local amount 2 cm. Wind up to 15 km/h. Temperature steady near zero. Wind chill minus 5 in the morning. UV index 1 or low.
Night:  A few flurries ending near midnight then cloudy with 30 percent chance of flurries. Local amount 2 cm. Wind becoming west 20 km/h gusting to 40 near midnight then light before morning. Temperature steady near minus 3. Wind chill near minus 9.
Chance of flurries
Tue, 19 Jan
-3°C27°F
Cloudy with 40 percent chance of flurries. High minus 3.
Night:  Cloudy with 40 percent chance of flurries. Low minus 7.
Chance of flurries
Wed, 20 Jan
-4°C25°F
Cloudy with 30 percent chance of flurries. High minus 4.
Night:  Cloudy with 30 percent chance of flurries. Low minus 6.
Chance of snow
Thu, 21 Jan
1°C34°F
Cloudy with 60 percent chance of snow. High plus 1.
Night:  Cloudy. Low minus 3.
Cloudy
Fri, 22 Jan
-1°C30°F
Cloudy. High minus 1.
Night:  Cloudy. Low minus 6.
Cloudy
Sat, 23 Jan
-2°C28°F
Cloudy. High minus 2.
Normals:
Max -2°C.28°F. Min -9°C.16°F.
Sunrise:
7:52 EST
Sunset:
17:18 EST

Averages and extremes

12 January
Average high
  • -2.4°C27.7°F
Average low
  • -9.9°C14.2°F
Highest temperature (1941-2002)
  • 11.2°C52.2°F
  • 1995
Lowest temperature (1941-2002)
  • -25.0°C-13.0°F
  • 1966
Greatest precipitation (1941-2017)
  • 24.2 mm0.95 inches
  • 2013
Greatest rainfall (1941-2017)
  • 24.2 mm0.95 inches
  • 2013
Greatest snowfall (1941-2017)
  • 8.2 cm3.23 inches
  • 1999
Most snow on the ground (1955-2017)
  • 58.0 cm22.83 inches
  • 1969
Monthly frequency of precipitation
  • 61 %

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 January
Average high
  • -2.4°C27.7°F
Average low
  • -10.0°C14.0°F
Highest temperature (1941-2002)
  • 14.0°C57.2°F
  • 1995
Lowest temperature (1941-2002)
  • -23.7°C-10.7°F
  • 1977
Greatest precipitation (1941-2017)
  • 17.0 mm0.67 inches
  • 1976
Greatest rainfall (1941-2017)
  • 10.0 mm0.39 inches
  • 2005
Greatest snowfall (1941-2017)
  • 17.0 cm6.69 inches
  • 1976
Most snow on the ground (1955-2017)
  • 58.0 cm22.83 inches
  • 1969
Monthly frequency of precipitation
  • 61 %

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 January
Average high
  • -2.5°C27.5°F
Average low
  • -10.1°C13.8°F
Highest temperature (1941-2002)
  • 14.3°C57.7°F
  • 1995
Lowest temperature (1941-2002)
  • -25.0°C-13.0°F
  • 1970
Greatest precipitation (1941-2017)
  • 46.0 mm1.81 inches
  • 1968
Greatest rainfall (1941-2017)
  • 28.4 mm1.12 inches
  • 1968
Greatest snowfall (1941-2017)
  • 24.0 cm9.45 inches
  • 1992
Most snow on the ground (1955-2017)
  • 56.0 cm22.05 inches
  • 1969
Monthly frequency of precipitation
  • 61 %

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 January
Average high
  • -2.5°C27.5°F
Average low
  • -10.1°C13.8°F
Highest temperature (1941-2002)
  • 12.0°C53.6°F
  • 1995
Lowest temperature (1941-2002)
  • -28.4°C-19.1°F
  • 1984
Greatest precipitation (1941-2017)
  • 23.2 mm0.91 inches
  • 1995
Greatest rainfall (1941-2017)
  • 23.2 mm0.91 inches
  • 1995
Greatest snowfall (1941-2017)
  • 15.2 cm5.98 inches
  • 1968
Most snow on the ground (1955-2017)
  • 53.0 cm20.87 inches
  • 1969
Monthly frequency of precipitation
  • 61 %

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 January
Average high
  • -2.6°C27.3°F
Average low
  • -10.2°C13.6°F
Highest temperature (1941-2002)
  • 10.6°C51.1°F
  • 1949
Lowest temperature (1941-2002)
  • -28.8°C-19.8°F
  • 1984
Greatest precipitation (1941-2017)
  • 12.6 mm0.5 inches
  • 1996
Greatest rainfall (1941-2017)
  • 12.6 mm0.5 inches
  • 1996
Greatest snowfall (1941-2017)
  • 10.4 cm4.09 inches
  • 1954
Most snow on the ground (1955-2017)
  • 48.0 cm18.9 inches
  • 1969
Monthly frequency of precipitation
  • 61 %

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 January
Average high
  • -2.6°C27.3°F
Average low
  • -10.3°C13.5°F
Highest temperature (1941-2002)
  • 10.6°C51.1°F
  • 1952
Lowest temperature (1941-2002)
  • -28.9°C-20.0°F
  • 1976
Greatest precipitation (1941-2017)
  • 16.5 mm0.65 inches
  • 2006
Greatest rainfall (1941-2017)
  • 14.5 mm0.57 inches
  • 2006
Greatest snowfall (1941-2017)
  • 13.2 cm5.2 inches
  • 1970
Most snow on the ground (1955-2017)
  • 41.0 cm16.14 inches
  • 1969
Monthly frequency of precipitation
  • 61 %

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 January
Average high
  • -2.6°C27.3°F
Average low
  • -10.3°C13.5°F
Highest temperature (1941-2002)
  • 12.4°C54.3°F
  • 1996
Lowest temperature (1941-2002)
  • -30.6°C-23.1°F
  • 1976
Greatest precipitation (1941-2017)
  • 27.9 mm1.1 inches
  • 1949
Greatest rainfall (1941-2017)
  • 27.9 mm1.1 inches
  • 1949
Greatest snowfall (1941-2017)
  • 14.2 cm5.59 inches
  • 1960
Most snow on the ground (1955-2017)
  • 38.0 cm14.96 inches
  • 1976
Monthly frequency of precipitation
  • 61 %

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.

19 January
Average high
  • -2.6°C27.3°F
Average low
  • -10.4°C13.3°F
Highest temperature (1941-2002)
  • 8.4°C47.1°F
  • 1996
Lowest temperature (1941-2002)
  • -29.1°C-20.4°F
  • 1994
Greatest precipitation (1941-2017)
  • 20.2 mm0.8 inches
  • 1987
Greatest rainfall (1941-2017)
  • 9.9 mm0.39 inches
  • 1986
Greatest snowfall (1941-2017)
  • 20.0 cm7.87 inches
  • 2004
Most snow on the ground (1955-2017)
  • 38.0 cm14.96 inches
  • 1976
Monthly frequency of precipitation
  • 61 %

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.

20 January
Average high
  • -2.7°C27.1°F
Average low
  • -10.4°C13.3°F
Highest temperature (1941-2002)
  • 10.6°C51.1°F
  • 1951
Lowest temperature (1941-2002)
  • -26.1°C-15.0°F
  • 1970
Greatest precipitation (1941-2017)
  • 27.7 mm1.09 inches
  • 1959
Greatest rainfall (1941-2017)
  • 25.5 mm1.0 inches
  • 1995
Greatest snowfall (1941-2017)
  • 12.1 cm4.76 inches
  • 1978
Most snow on the ground (1955-2017)
  • 46.0 cm18.11 inches
  • 1976
Monthly frequency of precipitation
  • 61 %

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.

21 January
Average high
  • -2.7°C27.1°F
Average low
  • -10.4°C13.3°F
Highest temperature (1941-2002)
  • 9.4°C48.9°F
  • 1959
Lowest temperature (1941-2002)
  • -25.6°C-14.1°F
  • 1984
Greatest precipitation (1941-2017)
  • 11.4 mm0.45 inches
  • 1993
Greatest rainfall (1941-2017)
  • 11.4 mm0.45 inches
  • 1993
Greatest snowfall (1941-2017)
  • 9.4 cm3.7 inches
  • 1955
Most snow on the ground (1955-2017)
  • 45.0 cm17.72 inches
  • 2004
Monthly frequency of precipitation
  • 61 %

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.

22 January
Average high
  • -2.7°C27.1°F
Average low
  • -10.5°C13.1°F
Highest temperature (1941-2002)
  • 8.3°C46.9°F
  • 1972
Lowest temperature (1941-2002)
  • -23.3°C-9.9°F
  • 1976
Greatest precipitation (1941-2017)
  • 22.1 mm0.87 inches
  • 1957
Greatest rainfall (1941-2017)
  • 15.1 mm0.59 inches
  • 1999
Greatest snowfall (1941-2017)
  • 12.2 cm4.8 inches
  • 1976
Most snow on the ground (1955-2017)
  • 58.0 cm22.83 inches
  • 1976
Monthly frequency of precipitation
  • 61 %

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:
1.9 °C35.4 °F
Min:
-1.4 °C29.5 °F
Total Precipitation:
0.0 mm0.00 in

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