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Monthly
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Current
Hourly
7 Days
14 Days
Weekend
Monthly
°C
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Vandalia, IL
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April
Average Temperature
High
18°
Feels 18
Low
8°
Feels 6
Average Precipitation
11 Days
Rain amount
109.2mm
Snow amount
0.1cm
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Daily Historical Averages
April 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
25°
16
25°
17
27°
18
15°
19
14°
20
20°
21
22°
22
20°
23
22°
24
24°
25
14°
26
7°
27
10°
28
14°
29
12°
30
Forecast
Wednesday, April 15, 2026
Day
25°
Feels 25
Wind
24 km/h S
Gust
37 km/h
Humidity
67%
P.O.P
60%
Rain
1-3 mm
Night
18°
Feels 17
Wind
22 km/h SW
Gust
32 km/h
Humidity
98%
P.O.P
80%
Rain
1-3 mm
Historical Averages
Apr 15
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.