Sarnia Weather Forecast

CURRENT CONDITIONS - July 21, 2025
20°
Low of20°
Feels like 21°CLast Updated: July 21, 2025 at 12:33 AMWeather information supplied by: OpenWeather API
POP:1%
Wind:6.48 km/h
Humidity:79%
UV:8.24
Sunrise:10:08 AM
Sunset:1:02 AM

Sarnia Weather Forecast - Hourly

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Sarnia Weather Forecast - Weekly

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Sunday
July 20
24°
20°
Today
July 21
21°
17°
Tomorrow
July 22
23°
14°
Wednesday
July 23
25°
16°
Thursday
July 24
31°
22°
Friday
July 25
28°
22°
Saturday
July 26
24°
20°
Sunday
July 27
26°
19°

Local News

A young child on a boat in a lifejacket. Photo by shalamov/ iStock via Getty Images Plus.

OPP stress importance of water safety

Provincial police are urging people to plan ahead and be safe when on or near the water as there have been multiple drownings reported across the west region this summer.