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Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Grafton, IL
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April
Average Temperature
High
19°
Feels 19
Low
8°
Feels 6
Average Precipitation
11 Days
Rain amount
127mm
Snow amount
0.1cm
Content continues below
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
16
17
18
14°
19
19°
20
19°
21
26°
22
28°
23
29°
24
24°
25
19°
26
22°
27
24°
28
25°
29
26°
30
27°
Forecast
Saturday, April 18, 2026
Day
14°
Feels 11
Wind
28 km/h NW
Gust
43 km/h
Humidity
40%
P.O.P
40%
Rain
<1 mm
Night
4°
Feels 2
Wind
22 km/h NW
Gust
33 km/h
Humidity
75%
P.O.P
0%
Historical Averages
Apr 18
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.