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Hourly
7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Marion, IL
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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
29°
17
30°
18
30°
19
28°
20
23°
21
24°
22
24°
23
29°
24
28°
25
29°
26
29°
27
30°
28
30°
29
29°
30
29°
31
Forecast
Saturday, May 16, 2026
Day
29°
Feels 31
Wind
22 km/h S
Gust
33 km/h
Humidity
54%
P.O.P
40%
Rain
~1 mm
Night
18°
Feels 18
Wind
16 km/h S
Gust
25 km/h
Humidity
80%
P.O.P
30%
Rain
~1 mm
Historical Averages
May 16
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.
May
Average Temperature
High
25°
Feels 25
Low
14°
Feels 14
Average Precipitation
12 Days
Rain amount
104.3mm
Snow amount
0cm