Monthly Historical AveragesSarnia, ON
Average Temperature
High
2°
Feels -1
Low
-4°
Feels -9
Average Precipitation
3 Days
3mm
2.2cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastWednesday, December 24, 2025
Day
2°Feels 1
Wind
24 km/h NW
Gust
30 km/h
Humidity
69%
P.O.P
30%
Night
0°Feels -5
Wind
16 km/h S
Gust
35 km/h
Humidity
93%
P.O.P
30%
Historical AveragesDec 24
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity