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
Manteno, IL
Content continues below
May
Average Temperature
High
22°
Feels 22
Low
10°
Feels 9
Average Precipitation
11 Days
Rain amount
79.2mm
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
27°
19
24°
20
15°
21
18°
22
18°
23
22°
24
24°
25
23°
26
23°
27
24°
28
24°
29
24°
30
25°
31
24°
Forecast
Monday, May 18, 2026
Day
27°
Feels 29
Wind
40 km/h S
Gust
60 km/h
Humidity
62%
P.O.P
80%
Rain
~20 mm
Night
22°
Feels 22
Wind
33 km/h S
Gust
50 km/h
Humidity
88%
P.O.P
80%
Rain
~1 mm
Historical Averages
May 18
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.