Monthly Historical AveragesAlton, ON
Average Temperature
High
11°
Feels 9
Low
0°
Feels -4
Average Precipitation
10 Days
75.8mm
9cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastThursday, April 9, 2026
Day
17°Feels 16
Wind
32 km/h S
Gust
50 km/h
Humidity
47%
P.O.P
40%
Rain
~1 mm
Night
2°Feels -1
Wind
28 km/h N
Gust
42 km/h
Humidity
93%
P.O.P
90%
Rain
1-3 mm
Historical AveragesApr 9
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity