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°C
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Monthly Historical Averages
Decatur, 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
25°
10
17°
11
21°
12
26°
13
28°
14
28°
15
23°
16
24°
17
26°
18
23°
19
25°
20
25°
21
27°
22
23°
23
16°
24
25
26
27
28
29
30
Forecast
Thursday, April 9, 2026
Day
25°
Feels 25
Wind
25 km/h SW
Gust
37 km/h
Humidity
35%
P.O.P
30%
Night
13°
Feels 12
Wind
26 km/h S
Gust
39 km/h
Humidity
84%
P.O.P
30%
Historical Averages
Apr 9
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
77.3mm
Snow amount
0.1cm