Monthly
     

Monthly Historical AveragesAlton, IL

Average Temperature
High
6°
Feels 3
Low
-2°
Feels -6
Average Precipitation
8 Days
Rain amount
69.1mm
Snow amount
7.5cm
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Daily Historical Averages

S
M
T
W
T
F
S
ForecastSunday, December 28, 2025
Day
Risk of a thunderstorm
22°Feels 22
Wind
37 km/h S
Gust
56 km/h
Humidity
62%
P.O.P
60%
Rain
1-3 mm
Night
Partly cloudy
-8°Feels -17
Wind
48 km/h W
Gust
72 km/h
Humidity
67%
P.O.P
30%
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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