Monthly Historical AveragesVandalia, IL
Average Temperature
High
4°
Feels 1
Low
-5°
Feels -10
Average Precipitation
6 Days
31mm
11.8cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastSaturday, February 28, 2026
Day
17°Feels 17
Wind
12 km/h NE
Gust
18 km/h
Humidity
28%
P.O.P
30%
Night
-2°Feels -8
Wind
24 km/h N
Gust
36 km/h
Humidity
78%
P.O.P
30%
Historical AveragesFeb 28
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity