Monthly Historical AveragesGranite City, IL
Average Temperature
High
20°
Feels 20
Low
9°
Feels 7
Average Precipitation
11 Days
126.6mm
0.1cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastFriday, April 3, 2026
Day
28°Feels 28
Wind
22 km/h S
Gust
33 km/h
Humidity
55%
P.O.P
30%
Night
15°Feels 14
Wind
20 km/h S
Gust
30 km/h
Humidity
96%
P.O.P
100%
Rain
~20 mm
Historical AveragesApr 3
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity