Monthly
     

Monthly Historical AveragesHarriston, ON

Average Temperature
High
0°
Feels -4
Low
-6°
Feels -12
Average Precipitation
4 Days
Rain amount
6.4mm
Snow amount
5.7cm
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Daily Historical Averages

S
M
T
W
T
F
S
ForecastSunday, December 28, 2025
Day
Rain
2°Feels -3
Wind
24 km/h SE
Gust
36 km/h
Humidity
93%
P.O.P
100%
Rain
~15 mm
Night
Rain
1°Feels -11
Wind
41 km/h SE
Gust
62 km/h
Humidity
100%
P.O.P
100%
Rain
20-25 mm
Historical AveragesDec 28
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.
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