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7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Walnut, IL
Content continues below
May
Average Temperature
High
22°
Feels 22
Low
11°
Feels 9
Average Precipitation
13 Days
Rain amount
116mm
Snow amount
0cm
Content continues below
Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
25°
13
19°
14
23°
15
25°
16
27°
17
24°
18
24°
19
20°
20
21°
21
22°
22
23°
23
23°
24
24°
25
25°
26
25°
27
28
29
30
31
Forecast
Tuesday, May 12, 2026
Day
25°
Feels 25
Wind
38 km/h SW
Gust
57 km/h
Humidity
34%
P.O.P
60%
Rain
~1 mm
Night
10°
Feels 7
Wind
37 km/h NW
Gust
56 km/h
Humidity
76%
P.O.P
40%
Rain
<1 mm
Historical Averages
May 12
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.