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Monthly Historical Averages
Chillicothe, IL
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April
Average Temperature
High
18°
Feels 17
Low
6°
Feels 3
Average Precipitation
11 Days
Rain amount
97.7mm
Snow amount
0.2cm
Daily Historical Averages
April 2026
S
M
T
W
T
F
S
1
2
21°
3
23°
4
12°
5
11°
6
11°
7
9°
8
17°
9
17°
10
18°
11
17°
12
16°
13
16°
14
16°
15
17°
16
16°
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Forecast
Thursday, April 2, 2026
Day
21°
Feels 21
Wind
48 km/h S
Gust
72 km/h
Humidity
78%
P.O.P
100%
Rain
10-15 mm
Night
9°
Feels 7
Wind
40 km/h S
Gust
60 km/h
Humidity
93%
P.O.P
60%
Rain
1-3 mm
Historical Averages
Apr 2
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.