Sarnia Weather Forecast

CURRENT CONDITIONS - June 11, 2026
22°
Low of22°
Feels like 22°CLast Updated: June 11, 2026 at 7:57 AMWeather information supplied by: OpenWeather API
POP:0.37%
Wind:6.18 km/h
Humidity:76%
UV:5.57
Sunrise:9:49 AM
Sunset:1:08 AM

Current Weather Alerts

A heat event continues. What: Daytime highs near 31 degrees Celsius. Overnight lows near 21 degrees Celsius. Humidex values between 38 and 41. When: Continuing into Thursday. Additional Information: The heat event may continue Friday into Saturday, although confidence is low at this stage. Areas near Lake Huron and Lake Erie will likely be cooler. ### For more information: https://www.canada.ca/en/health-canada/services/climate-change-health/extreme-heat/how-protect-yourself.html https://www.canada.ca/en/health-canada/services/climate-change-health/extreme-heat/who-is-at-risk.html 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.

Sarnia Weather Forecast - Hourly

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Sarnia Weather Forecast - Weekly

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Today
June 11
28°
22°
Tomorrow
June 12
22°
17°
Saturday
June 13
25°
16°
Sunday
June 14
20°
13°
Monday
June 15
16°
11°
Tuesday
June 16
18°
12°
Wednesday
June 17
21°
13°
Thursday
June 18
24°
18°

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