Monthly Historical AveragesSarnia, ON
Average Temperature
High
-1°
Feels -5
Low
-8°
Feels -13
Average Precipitation
3 Days
3.2mm
4.4cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastSaturday, January 10, 2026
Day
4°Feels 0
Wind
22 km/h E
Gust
33 km/h
Humidity
80%
P.O.P
90%
Rain
~5 mm
Night
-4°Feels -12
Wind
41 km/h W
Gust
62 km/h
Humidity
100%
P.O.P
70%
Rain
<1 mm
Historical AveragesJan 10
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity