Monthly Historical AveragesHarriston, ON
Average Temperature
High
-3°
Feels -8
Low
-10°
Feels -17
Average Precipitation
4 Days
0mm
20.1cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastSaturday, January 31, 2026
Day
-12°Feels -17
Wind
21 km/h N
Gust
32 km/h
Humidity
63%
P.O.P
30%
Night
-21°Feels -30
Wind
20 km/h N
Gust
30 km/h
Humidity
92%
P.O.P
20%
Historical AveragesJan 31
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity