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St. Thomas, ON

Current Conditions

Sunny

Sunny

17°C62°F

Wind:
W 13 km/h
W 8 mph
More details
Temperature:
16.9°C
62.4° F
Pressure:
102.7 kPa
30.3 inches
Dew point:
0.9°C
33.6°F
Visibility:
24 km
15 miles
Humidity:
34%
Date:
10:00 AM EDT Friday 14 May 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: 5:00 AM EDT Friday 14 May 2021

Detailed ForecastForecast issued: 5:00 AM EDT Friday 14 May 2021

Sunny
Today
21°C70°F
Sunny. Wind becoming southwest 20 km/h this afternoon. High 21. UV index 8 or very high.
Clear
Tonight
5°C41°F
Clear. Low plus 5.
Mainly sunny
Sat, 15 May
22°C72°F
Mainly sunny. Wind becoming southwest 20 km/h late in the afternoon. High 22. UV index 7 or high.
Night:  Clear. Low 6.
A mix of sun and cloud
Sun, 16 May
20°C68°F
A mix of sun and cloud. High 20.
Night:  Cloudy periods. Low 10.
A mix of sun and cloud
Mon, 17 May
22°C72°F
A mix of sun and cloud. High 22.
Night:  Cloudy periods. Low 11.
A mix of sun and cloud
Tue, 18 May
24°C75°F
A mix of sun and cloud. High 24.
Night:  Cloudy periods. Low 12.
A mix of sun and cloud
Wed, 19 May
24°C75°F
A mix of sun and cloud. High 24.
Night:  Cloudy periods. Low 13.
A mix of sun and cloud
Thu, 20 May
24°C75°F
A mix of sun and cloud. High 24.
Normals:
Max 19°C.66°F. Min 8°C.46°F.
Sunrise:
6:03 EDT
Sunset:
20:39 EDT

Averages and extremes

09 May
Average high
  • 17.6°C63.7°F
Average low
  • 5.7°C42.3°F
Highest temperature (1941-2002)
  • 28.6°C83.5°F
  • 1979
Lowest temperature (1941-2002)
  • -4.4°C24.1°F
  • 1966
Greatest precipitation (1941-2002)
  • 41.7 mm1.64 inches
  • 1948
Greatest rainfall (1941-2002)
  • 41.7 mm1.64 inches
  • 1948
Greatest snowfall (1941-2002)
  • 0.5 cm0.2 inches
  • 1969
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 41 %

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 May
Average high
  • 17.9°C64.2°F
Average low
  • 5.9°C42.6°F
Highest temperature (1941-2002)
  • 28.3°C82.9°F
  • 1953
Lowest temperature (1941-2002)
  • -5.0°C23.0°F
  • 1947
Greatest precipitation (1941-2002)
  • 29.6 mm1.17 inches
  • 1995
Greatest rainfall (1941-2002)
  • 29.6 mm1.17 inches
  • 1995
Greatest snowfall (1941-2002)
  • 0.5 cm0.2 inches
  • 1945
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 41 %

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 May
Average high
  • 18.1°C64.6°F
Average low
  • 6.0°C42.8°F
Highest temperature (1941-2002)
  • 28.2°C82.8°F
  • 1987
Lowest temperature (1941-2002)
  • -3.3°C26.1°F
  • 1966
Greatest precipitation (1941-2002)
  • 30.0 mm1.18 inches
  • 1943
Greatest rainfall (1941-2002)
  • 30.0 mm1.18 inches
  • 1943
Greatest snowfall (1941-2002)
  • 1.0 cm0.39 inches
  • 1990
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 41 %

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 May
Average high
  • 18.3°C64.9°F
Average low
  • 6.2°C43.2°F
Highest temperature (1941-2002)
  • 28.7°C83.7°F
  • 1991
Lowest temperature (1941-2002)
  • -0.6°C30.9°F
  • 1967
Greatest precipitation (1941-2002)
  • 25.0 mm0.98 inches
  • 2002
Greatest rainfall (1941-2002)
  • 25.0 mm0.98 inches
  • 2002
Greatest snowfall (1941-2002)
  • 0.0 cm0.0 inches
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 41 %

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 May
Average high
  • 18.5°C65.3°F
Average low
  • 6.4°C43.5°F
Highest temperature (1941-2002)
  • 29.4°C84.9°F
  • 1991
Lowest temperature (1941-2002)
  • -1.7°C28.9°F
  • 1946
Greatest precipitation (1941-2002)
  • 26.8 mm1.06 inches
  • 1990
Greatest rainfall (1941-2002)
  • 26.8 mm1.06 inches
  • 1990
Greatest snowfall (1941-2002)
  • 5.0 cm1.97 inches
  • 1984
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 41 %

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 May
Average high
  • 18.7°C65.7°F
Average low
  • 6.6°C43.9°F
Highest temperature (1941-2002)
  • 30.0°C86.0°F
  • 1962
Lowest temperature (1941-2002)
  • -0.6°C30.9°F
  • 1943
Greatest precipitation (1941-2002)
  • 21.6 mm0.85 inches
  • 1945
Greatest rainfall (1941-2002)
  • 21.6 mm0.85 inches
  • 1945
Greatest snowfall (1941-2002)
  • 1.0 cm0.39 inches
  • 1959
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 41 %

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 May
Average high
  • 18.9°C66.0°F
Average low
  • 6.8°C44.2°F
Highest temperature (1941-2002)
  • 31.1°C88.0°F
  • 1962
Lowest temperature (1941-2002)
  • 0.4°C32.7°F
  • 1984
Greatest precipitation (1941-2002)
  • 36.3 mm1.43 inches
  • 1942
Greatest rainfall (1941-2002)
  • 36.3 mm1.43 inches
  • 1942
Greatest snowfall (1941-2002)
  • 0.0 cm0.0 inches
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 41 %

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 May
Average high
  • 19.2°C66.6°F
Average low
  • 7.0°C44.6°F
Highest temperature (1941-2002)
  • 31.1°C88.0°F
  • 1962
Lowest temperature (1941-2002)
  • -2.2°C28.0°F
  • 1959
Greatest precipitation (1941-2002)
  • 27.7 mm1.09 inches
  • 1946
Greatest rainfall (1941-2002)
  • 27.7 mm1.09 inches
  • 1946
Greatest snowfall (1941-2002)
  • 0.3 cm0.12 inches
  • 1956
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 41 %

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 May
Average high
  • 19.4°C66.9°F
Average low
  • 7.2°C45.0°F
Highest temperature (1941-2002)
  • 31.7°C89.1°F
  • 1962
Lowest temperature (1941-2002)
  • -1.7°C28.9°F
  • 1973
Greatest precipitation (1941-2002)
  • 24.4 mm0.96 inches
  • 1945
Greatest rainfall (1941-2002)
  • 24.4 mm0.96 inches
  • 1945
Greatest snowfall (1941-2002)
  • 0.0 cm0.0 inches
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 41 %

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 May
Average high
  • 19.6°C67.3°F
Average low
  • 7.4°C45.3°F
Highest temperature (1941-2002)
  • 31.1°C88.0°F
  • 1962
Lowest temperature (1941-2002)
  • -3.3°C26.1°F
  • 1973
Greatest precipitation (1941-2002)
  • 47.5 mm1.87 inches
  • 1969
Greatest rainfall (1941-2002)
  • 47.5 mm1.87 inches
  • 1969
Greatest snowfall (1941-2002)
  • 0.0 cm0.0 inches
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 41 %

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 May
Average high
  • 19.8°C67.6°F
Average low
  • 7.6°C45.7°F
Highest temperature (1941-2002)
  • 31.2°C88.2°F
  • 1998
Lowest temperature (1941-2002)
  • -2.8°C27.0°F
  • 2002
Greatest precipitation (1941-2002)
  • 36.2 mm1.43 inches
  • 1983
Greatest rainfall (1941-2002)
  • 36.2 mm1.43 inches
  • 1983
Greatest snowfall (1941-2002)
  • 0.0 cm0.0 inches
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 41 %

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:
18.6 °C65.5 °F
Min:
1.6 °C34.9 °F
Total Precipitation:
0.0 mm0.00 in

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