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7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Willowbrook, IL
Content continues below
May
Average Temperature
High
21°
Feels 21
Low
10°
Feels 9
Average Precipitation
13 Days
Rain amount
87.1mm
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
13
14
15
16
17
18
19
20
15°
21
17°
22
18°
23
22°
24
25°
25
27°
26
28°
27
28°
28
24°
29
24°
30
25°
31
25°
Forecast
Wednesday, May 20, 2026
Day
15°
Feels 13
Wind
25 km/h NE
Gust
38 km/h
Humidity
51%
P.O.P
30%
Night
9°
Feels 6
Wind
23 km/h NE
Gust
35 km/h
Humidity
66%
P.O.P
20%
Historical Averages
May 20
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.