Monthly Historical AveragesCharleston, IL
Average Temperature
High
30°
Feels 32
Low
19°
Feels 19
Average Precipitation
11 Days
106.5mm
0cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastTuesday, July 21, 2026
Day
31°Feels 33
Wind
28 km/h W
Gust
42 km/h
Humidity
52%
P.O.P
20%
Night
18°Feels 18
Wind
22 km/h NW
Gust
33 km/h
Humidity
92%
P.O.P
20%
Historical AveragesJul 21
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity