The Weather Network
Weather
Maps
News
Video
|
Welcome
Monthly
⋮
Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Harborside International Golf Center, IL
Content continues below
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
21
16°
22
18°
23
20°
24
26°
25
27°
26
26°
27
28°
28
23°
29
23°
30
24°
31
24°
Forecast
Thursday, May 21, 2026
Day
16°
Feels 15
Wind
26 km/h NE
Gust
39 km/h
Humidity
51%
P.O.P
20%
Night
11°
Feels 8
Wind
25 km/h NE
Gust
38 km/h
Humidity
66%
P.O.P
30%
Historical Averages
May 21
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.
May
Average Temperature
High
20°
Feels 20
Low
11°
Feels 10
Average Precipitation
12 Days
Rain amount
87mm
Snow amount
0cm