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Weather in Sarnia, Ontario, Canada

Now
21 °F

Light snow. Overcast.


Feels Like: 10 °F
Forecast: 31 / 10 °F
Wind: 10 mph from South

Location: Sarnia Airport
Current Time: Jan 21, 2026 at 9:54:08 am
Latest Report: Jan 21, 2026 at 9:00 am
Visibility: 1 mi
Pressure: 30.03 "Hg
Humidity: 86%
Dew Point: 18 °F
Location of SarniaLocation

Upcoming 5 hours

Now10:00 am11:00 am12:00 pm1:00 pm2:00 pm
21 °F20 °F22 °F24 °F26 °F27 °F

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Forecast for the next 48 hours

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 WednesdayThursday
 MorningAfternoonEveningNightMorningAfternoonEvening
Forecast
Temperature18 °F28 °F27 °F27 °F19 °F20 °F17 °F
Moderate snow. Overcast.Snow. Overcast.Light snow. Overcast.Snow. Overcast.Light snow. Broken clouds.Light snow. Cloudy.Light snow. Cloudy.
Feels Like3 °F17 °F16 °F16 °F4 °F7 °F2 °F
Wind Speed16 mph15 mph13 mph14 mph19 mph15 mph15 mph
Wind DirectionS
SSW
SW
WSW
W
WSW
W
Humidity86%76%80%81%75%56%73%
Dew Point14 °F22 °F22 °F22 °F13 °F7 °F9 °F
Visibility0 mi1 mi2 mi2 mi2 mi2 mi2 mi
Probability of Precipitation32%43%28%31%28%22%23%
Amount of Rain0.00"0.00"0.00"0.00"0.00"0.00"0.00"
Amount of Snow1.46"0.59"0.27"0.61"0.41"0.40"0.45"
* Updated Wednesday, January 21, 2026 8:42:43 am Sarnia time - Weather by CustomWeather, © 2026

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

Yesterday's weather

Light snow. Passing clouds. 16 / 3 °F
Humidity: 66%. Wind: 12 mph from Southwest

More weather last week

Currently at nearby stations

21 °F

Windsor Weather Station: (58 mi)

Snow. Ice fog.

19 °F

London Weather Station: (62 mi)

Snow flurries. Ice fog.

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Forecast for the next 2 weeks

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SunMonTueWedThuFriSat
18
19
20

View historic weather

5
6
7

Detailed forecast for 14 days