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Weather in St. Thomas, Ontario, Canada

Now
18 °F

Light snow. Overcast.


Feels Like: 4 °F
Forecast: 22 / 12 °F
Wind: 13 mph from Southwest

Location: London Weather Station
Current Time: Dec 15, 2025 at 10:49:05 am
Latest Report: Dec 15, 2025 at 10:05 am
Visibility: 2 mi
Pressure: 30.33 "Hg
Humidity: 86%
Dew Point: 14 °F
Location of St. ThomasLocation

Upcoming 5 hours

Now11:00 am12:00 pm1:00 pm2:00 pm3:00 pm
18 °F20 °F20 °F20 °F21 °F21 °F

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Forecast for the next 48 hours

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 MondayTuesday
 MorningAfternoonEveningNightMorningAfternoonEvening
Forecast
Temperature17 °F21 °F16 °F13 °F18 °F31 °F33 °F
Light snow. Overcast.Snow. Overcast.Mostly clear.Partly cloudy.Overcast.Overcast.Broken clouds.
Feels Like3 °F7 °F3 °F5 °F8 °F20 °F20 °F
Wind Speed12 mph17 mph11 mph5 mph8 mph18 mph21 mph
Wind DirectionWSW
WSW
WSW
W
SSW
SSW
SSW
Humidity81%70%73%84%91%68%76%
Dew Point12 °F13 °F9 °F9 °F16 °F22 °F26 °F
Visibility2 mi2 mi6 mi5 mi5 mi7 mi6 mi
Probability of Precipitation24%35%5%5%4%1%0%
Amount of Rain0.00"0.00"0.00"0.00"0.00"0.00"0.00"
Amount of Snow0.30"0.61"0.00"0.00"0.00"0.00"0.00"
* Updated Monday, December 15, 2025 8:42:39 am St. Thomas time - Weather by CustomWeather, © 2025

14 day forecast, day-by-dayHour-by-hour forecast for next week

Yesterday's weather

Snow flurries. Partly sunny. 14 / 7 °F
Humidity: 82%. Wind: 8 mph from West

More weather last week

Currently at nearby stations

19 °F

Delhi Cs Ont: (32 mi)

Cold.

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Forecast for the next 2 weeks

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14

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31
1
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Detailed forecast for 14 days