Monthly Historical AveragesHarriston, ON
Average Temperature
High
11°
Feels 9
Low
0°
Feels -3
Average Precipitation
8 Days
29.2mm
5.7cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, April 5, 2026
Day
2°Feels -4
Wind
34 km/h W
Gust
51 km/h
Humidity
64%
P.O.P
40%
Rain
<1 mm
Night
-3°Feels -9
Wind
33 km/h NW
Gust
49 km/h
Humidity
86%
P.O.P
60%
Snow
~1 cm
Historical AveragesApr 5
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity