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
Altamont, 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
22
20°
23
24°
24
26°
25
26°
26
24°
27
24°
28
23°
29
23°
30
22°
31
23°
Forecast
Friday, May 22, 2026
Day
20°
Feels 20
Wind
15 km/h E
Gust
23 km/h
Humidity
75%
P.O.P
30%
Night
16°
Feels 16
Wind
11 km/h N
Gust
16 km/h
Humidity
98%
P.O.P
60%
Rain
1-3 mm
Historical Averages
May 22
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.
May
Average Temperature
High
23°
Feels 24
Low
13°
Feels 12
Average Precipitation
13 Days
Rain amount
117.6mm
Snow amount
0cm