Monthly Historical AveragesMount Vernon, IL
Average Temperature
High
6°
Feels 5
Low
-2°
Feels -4
Average Precipitation
8 Days
58.7mm
7.2cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastTuesday, December 30, 2025
Day
0°Feels -4
Wind
15 km/h NW
Gust
23 km/h
Humidity
36%
P.O.P
30%
Night
-3°Feels -7
Wind
18 km/h SW
Gust
26 km/h
Humidity
60%
P.O.P
20%
Historical AveragesDec 30
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity