Monthly Historical AveragesSt. Charles County Airport, MO
Average Temperature
High
20°
Feels 20
Low
8°
Feels 6
Average Precipitation
11 Days
128.3mm
0.1cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastTuesday, April 21, 2026
Day
26°Feels 26
Wind
28 km/h SW
Gust
42 km/h
Humidity
41%
P.O.P
20%
Night
12°Feels 11
Wind
24 km/h SW
Gust
36 km/h
Humidity
85%
P.O.P
10%
Historical AveragesApr 21
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity