Sarnia Weather Forecast

CURRENT CONDITIONS - January 28, 2026
-18°
Low of-18°
Feels like -24°CLast Updated: January 28, 2026 at 10:14 AMWeather information supplied by: OpenWeather API
POP:0.32%
Wind:6.01 km/h
Humidity:84%
UV:1.67
Sunrise:12:48 PM
Sunset:10:35 PM

Current Weather Alerts

A period of very cold wind chills is expected. What: Wind chill values of minus 25 to minus 30. When: Tonight into early Wednesday morning. ### Extreme cold puts everyone at risk. Risks are greater for young children, older adults, people with chronic illnesses, people working or exercising outdoors, and those without proper shelter. Watch for cold related symptoms: shortness of breath, chest pain, muscle pain and weakness, numbness and colour change in fingers and toes. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm. For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.

Sarnia Weather Forecast - Hourly

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-18°C

10 AM

-18°C

11 AM

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12 PM

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-16°C

2 PM

-13°C

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-11°C

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-9°C

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Sarnia Weather Forecast - Weekly

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Today
January 28
-10°
-18°
Tomorrow
January 29
-12°
-18°
Friday
January 30
-14°
-22°
Saturday
January 31
-10°
-18°
Sunday
February 1
-7°
-13°
Monday
February 2
-4°
-12°
Tuesday
February 3
-3°
-9°
Wednesday
February 4
-1°
-9°

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