St. Thomas, ON

Current Conditions

Mostly Cloudy

Mostly Cloudy

13°C56°F

Wind:
NNW 22
gust 36 km/h
NNW 14
gust 22 mph
More details
Temperature:
13.4°C
56.1° F
Pressure:
102.0 kPa
30.1 inches
Dew point:
7.8°C
46.0°F
Visibility:
24 km
15 miles
Humidity:
69%
Date:
1:00 AM EDT Saturday 22 September 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: 6:09 PM EDT Friday 21 September 2018

Detailed ForecastForecast issued: 6:09 PM EDT Friday 21 September 2018

Partly cloudy
Tonight
9°C48°F
Partly cloudy. Wind west 40 km/h gusting to 70 becoming northwest 20 near midnight. Low 9.
A mix of sun and cloud
Sat, 22 Sep
17°C63°F
A mix of sun and cloud. Clearing in the afternoon. High 17. UV index 6 or high.
Night:  Clear. Low plus 5.
Sunny
Sun, 23 Sep
20°C68°F
Sunny. High 20.
Night:  Clear. Low 11.
A mix of sun and cloud
Mon, 24 Sep
22°C72°F
A mix of sun and cloud. High 22.
Night:  Cloudy with 40 percent chance of showers. Windy. Low 17.
Chance of showers
Tue, 25 Sep
20°C68°F
Cloudy with 60 percent chance of showers. Windy. High 20.
Night:  Cloudy with 60 percent chance of showers. Low 13.
Chance of showers
Wed, 26 Sep
19°C66°F
A mix of sun and cloud with 40 percent chance of showers. High 19.
Night:  Clear. Low 8.
A mix of sun and cloud
Thu, 27 Sep
18°C64°F
A mix of sun and cloud. High 18.
Normals:
Max 20°C.68°F. Min 10°C.50°F.
Sunrise:
7:12 EDT
Sunset:
19:23 EDT

Averages and extremes

16 September
Average high
  • 20.9°C69.6°F
Average low
  • 9.6°C49.3°F
Highest temperature (1940-2002)
  • 30.8°C87.4°F
  • 1991
Lowest temperature (1940-2002)
  • 1.1°C34.0°F
  • 1966
Greatest precipitation (1940-2002)
  • 35.0 mm1.38 inches
  • 1977
Greatest rainfall (1940-2002)
  • 35.0 mm1.38 inches
  • 1977
Greatest snowfall (1940-2002)
  • 0.0 cm0.0 inches
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 40 %

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 September
Average high
  • 20.7°C69.3°F
Average low
  • 9.4°C48.9°F
Highest temperature (1940-2002)
  • 31.7°C89.1°F
  • 1955
Lowest temperature (1940-2002)
  • -1.1°C30.0°F
  • 1959
Greatest precipitation (1940-2002)
  • 29.7 mm1.17 inches
  • 1976
Greatest rainfall (1940-2002)
  • 29.7 mm1.17 inches
  • 1976
Greatest snowfall (1940-2002)
  • 0.0 cm0.0 inches
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 40 %

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 September
Average high
  • 20.5°C68.9°F
Average low
  • 9.3°C48.7°F
Highest temperature (1940-2002)
  • 32.8°C91.0°F
  • 1955
Lowest temperature (1940-2002)
  • -0.6°C30.9°F
  • 1943
Greatest precipitation (1940-2002)
  • 31.8 mm1.25 inches
  • 1992
Greatest rainfall (1940-2002)
  • 31.8 mm1.25 inches
  • 1992
Greatest snowfall (1940-2002)
  • 0.0 cm0.0 inches
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 40 %

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 September
Average high
  • 20.3°C68.5°F
Average low
  • 9.1°C48.4°F
Highest temperature (1940-2002)
  • 32.2°C90.0°F
  • 1955
Lowest temperature (1940-2002)
  • 1.7°C35.1°F
  • 1973
Greatest precipitation (1940-2002)
  • 29.4 mm1.16 inches
  • 2001
Greatest rainfall (1940-2002)
  • 29.4 mm1.16 inches
  • 2001
Greatest snowfall (1940-2002)
  • 0.0 cm0.0 inches
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 40 %

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 September
Average high
  • 20.1°C68.2°F
Average low
  • 8.9°C48.0°F
Highest temperature (1940-2002)
  • 29.4°C84.9°F
  • 1940
Lowest temperature (1940-2002)
  • 0.0°C32.0°F
  • 1973
Greatest precipitation (1940-2002)
  • 47.6 mm1.87 inches
  • 2002
Greatest rainfall (1940-2002)
  • 47.6 mm1.87 inches
  • 2002
Greatest snowfall (1940-2002)
  • 0.0 cm0.0 inches
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 40 %

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 September
Average high
  • 19.9°C67.8°F
Average low
  • 8.7°C47.7°F
Highest temperature (1940-2002)
  • 28.9°C84.0°F
  • 1970
Lowest temperature (1940-2002)
  • -2.8°C27.0°F
  • 1973
Greatest precipitation (1940-2002)
  • 45.2 mm1.78 inches
  • 1947
Greatest rainfall (1940-2002)
  • 45.2 mm1.78 inches
  • 1947
Greatest snowfall (1940-2002)
  • 0.0 cm0.0 inches
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 40 %

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 September
Average high
  • 19.7°C67.5°F
Average low
  • 8.5°C47.3°F
Highest temperature (1940-2002)
  • 30.6°C87.1°F
  • 1941
Lowest temperature (1940-2002)
  • -0.2°C31.6°F
  • 1999
Greatest precipitation (1940-2002)
  • 54.2 mm2.13 inches
  • 1996
Greatest rainfall (1940-2002)
  • 54.2 mm2.13 inches
  • 1996
Greatest snowfall (1940-2002)
  • 0.0 cm0.0 inches
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 40 %

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.

23 September
Average high
  • 19.5°C67.1°F
Average low
  • 8.3°C46.9°F
Highest temperature (1940-2002)
  • 28.3°C82.9°F
  • 1959
Lowest temperature (1940-2002)
  • -1.1°C30.0°F
  • 1974
Greatest precipitation (1940-2002)
  • 51.4 mm2.02 inches
  • 2000
Greatest rainfall (1940-2002)
  • 51.4 mm2.02 inches
  • 2000
Greatest snowfall (1940-2002)
  • 0.0 cm0.0 inches
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 40 %

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.

24 September
Average high
  • 19.2°C66.6°F
Average low
  • 8.1°C46.6°F
Highest temperature (1940-2002)
  • 28.3°C82.9°F
  • 1970
Lowest temperature (1940-2002)
  • -1.1°C30.0°F
  • 1974
Greatest precipitation (1940-2002)
  • 27.6 mm1.09 inches
  • 1977
Greatest rainfall (1940-2002)
  • 27.6 mm1.09 inches
  • 1977
Greatest snowfall (1940-2002)
  • 0.0 cm0.0 inches
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 40 %

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.

25 September
Average high
  • 19.0°C66.2°F
Average low
  • 7.9°C46.2°F
Highest temperature (1940-2002)
  • 26.7°C80.1°F
  • 1958
Lowest temperature (1940-2002)
  • 0.6°C33.1°F
  • 1947
Greatest precipitation (1940-2002)
  • 34.5 mm1.36 inches
  • 1945
Greatest rainfall (1940-2002)
  • 34.5 mm1.36 inches
  • 1945
Greatest snowfall (1940-2002)
  • 0.0 cm0.0 inches
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 40 %

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.

26 September
Average high
  • 18.8°C65.8°F
Average low
  • 7.7°C45.9°F
Highest temperature (1940-2002)
  • 29.4°C84.9°F
  • 1998
Lowest temperature (1940-2002)
  • -1.1°C30.0°F
  • 1947
Greatest precipitation (1940-2002)
  • 54.6 mm2.15 inches
  • 1942
Greatest rainfall (1940-2002)
  • 54.6 mm2.15 inches
  • 1942
Greatest snowfall (1940-2002)
  • 0.0 cm0.0 inches
Most snow on the ground (1955-2002)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 40 %

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:
20.8 °C69.4 °F
Min:
13.0 °C55.4 °F
Total Precipitation:
0.0 mm0.00 in
ATOM: Alerts
Twitter: Alerts
ATOM: Weather
Historical Weather

Print Instructions

City Page - Print Instructions

  1. Use the collapsible arrows at the top of each section to hide or unhide the sections that you want to print.
  2. Use your browser's print action to print the displayed content on one page. Don't forget to pick your preferred paper size.

NOTE: The print layout will differ slightly from the web page display.

Weather shortcuts


How to use
  • Add to shortcuts
    • Go to the desired page on the site, open the Weather shortcuts menu and click on the "Add to shortcuts" button
    • Page name will display in the "Add this page" window, the name can be changed by highlighting the text and entering the desired name.
    • Click on the "Save" button to add the link to the list
    • Click on the "X" button to close the panel
  • Delete a link
    • Click on the "Organize shortcuts" button
    • Select the link to delete
    • Click on the "Delete" button to remove the link from the list
    • Click on the "Close" button to save the change
  • Move a link up/down the list
    • Click on the "Organize shortcuts" button
    • Click and hold the link and move to new location in the list
    • Click on the "Close" button to save the change
  • Rename a link
    • Click on the "Organize shortcuts" button
    • Select the link to rename
    • Click on the "Rename" button and change the link name
    • Click the enter or tab key
    • Click on the "Close" button to save the change
  • Keyboard navigation
    • Use the Tab key to move to a button or link
    • Use the Enter key to click on buttons or links
    • Organize shortcuts navigation
      • Use the ↑ Up key to select the link above. If none are selected, it will select the first link
      • Use the ↓ Down key to select the link below. If none are selected, it will select the last link
      • Use the Page Up key to move a selection up in the list
      • Use the Page Down key to move a selection down in the list
  • Restore default list

    Warning: Clicking on the button below will remove all your customized links.

What we are doing

Weather Forecasts

Weather Alerts

Weather Resources

Features

Follow us on Twitter!

Get timely local #weather alerts directly to your Twitter feed

Be Air Aware

Be Air Aware

Be weather wise! 

Be weather wise!

Date modified:
Feedback about this web site