Monthly Historical AveragesAlton, IL
Average Temperature
High
13°
Feels 12
Low
3°
Feels 0
Average Precipitation
10 Days
74.8mm
4cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastSaturday, March 7, 2026
Day
17°Feels 17
Wind
28 km/h SW
Gust
41 km/h
Humidity
53%
P.O.P
40%
Rain
~1 mm
Night
2°Feels 2
Wind
20 km/h W
Gust
29 km/h
Humidity
84%
P.O.P
20%
Historical AveragesMar 7
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity