Monthly Historical AveragesSarnia, ON
Average Temperature
High
6°
Feels 3
Low
-3°
Feels -7
Average Precipitation
4 Days
6.7mm
2.6cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastThursday, March 26, 2026
Day
15°Feels 14
Wind
26 km/h SW
Gust
39 km/h
Humidity
68%
P.O.P
90%
Rain
5-10 mm
Night
-3°Feels -12
Wind
37 km/h N
Gust
56 km/h
Humidity
100%
P.O.P
90%
Rain
2-4 mm
Historical AveragesMar 26
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity