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7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Marion, IL
Content continues below
May
Average Temperature
High
25°
Feels 25
Low
14°
Feels 13
Average Precipitation
12 Days
Rain amount
93.8mm
Snow amount
0cm
Content continues below
Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
3
4
27°
5
18°
6
16°
7
18°
8
22°
9
27°
10
28°
11
22°
12
25°
13
27°
14
30°
15
31°
16
31°
17
32°
18
32°
19
20
21
22
23
24
25
26
27
28
29
30
31
Forecast
Monday, May 4, 2026
Day
27°
Feels 27
Wind
32 km/h SW
Gust
48 km/h
Humidity
31%
P.O.P
30%
Night
14°
Feels 13
Wind
28 km/h S
Gust
42 km/h
Humidity
94%
P.O.P
30%
Historical Averages
May 4
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.