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7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Ottumwa, IA
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May
Average Temperature
High
23°
Feels 23
Low
12°
Feels 10
Average Precipitation
13 Days
Rain amount
137.2mm
Snow amount
0.1cm
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
23
24
28°
25
31°
26
31°
27
30°
28
29°
29
25°
30
24°
31
25°
Forecast
Sunday, May 24, 2026
Day
28°
Feels 28
Wind
11 km/h NW
Gust
17 km/h
Humidity
34%
P.O.P
10%
Night
14°
Feels 13
Wind
12 km/h S
Gust
18 km/h
Humidity
88%
P.O.P
10%
Historical Averages
May 24
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.