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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Fairmount, IL
Content continues below
May
Average Temperature
High
24°
Feels 24
Low
12°
Feels 11
Average Precipitation
12 Days
Rain amount
91.7mm
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
21°
12
25°
13
16°
14
18°
15
20°
16
27°
17
28°
18
26°
19
21°
20
22°
21
23°
22
28°
23
28°
24
29°
25
28°
26
27
28
29
30
31
Forecast
Monday, May 11, 2026
Day
21°
Feels 21
Wind
24 km/h NW
Gust
36 km/h
Humidity
26%
P.O.P
0%
Night
6°
Feels 4
Wind
18 km/h NE
Gust
27 km/h
Humidity
71%
P.O.P
20%
Historical Averages
May 11
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.