Monthly
     

Monthly Historical AveragesAlton, IL

Average Temperature
High
14°
Feels 12
Low
3°
Feels 0
Average Precipitation
10 Days
Rain amount
78.9mm
Snow amount
4.2cm
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Daily Historical Averages

S
M
T
W
T
F
S
ForecastMonday, March 23, 2026
Day
A mix of sun and clouds
10°Feels 8
Wind
24 km/h N
Gust
36 km/h
Humidity
41%
P.O.P
30%
Night
Cloudy with clear breaks
2°Feels -1
Wind
14 km/h E
Gust
20 km/h
Humidity
64%
P.O.P
30%
Historical AveragesMar 23
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.
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