Friday
Sunny
High:
11°C
Sunny. High 11.
Sarnia, Ontario Weather - Extended Forecast
Friday Night
Chance of showers
Overnight low:
3°C
Cloudy with 60 percent chance of showers. Low plus 3.
Saturday
Periods of rain
High:
7°C
Saturday Night
Chance of showers
Overnight low:
2°C
Sunday
Chance of showers
High:
4°C
Sunday Night
Chance of rain showers or flurries
Overnight low:
-3°C
Monday
Chance of flurries
High:
2°C