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Hourly
7 Days
14 Days
Weekend
Monthly
°C
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°Celsius
°Fahrenheit
Monthly Historical Averages
Illiopolis, IL
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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
27°
14
28°
15
24°
16
24°
17
27°
18
22°
19
11°
20
14°
21
16°
22
22°
23
19°
24
19°
25
12°
26
13°
27
23°
28
29
30
Forecast
Monday, April 13, 2026
Day
27°
Feels 28
Wind
26 km/h SW
Gust
39 km/h
Humidity
55%
P.O.P
30%
Night
19°
Feels 20
Wind
27 km/h SW
Gust
41 km/h
Humidity
89%
P.O.P
30%
Historical Averages
Apr 13
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.
April
Average Temperature
High
18°
Feels 17
Low
7°
Feels 4
Average Precipitation
10 Days
Rain amount
78mm
Snow amount
0.1cm