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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Sioux City, IA
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August
Average Temperature
High
28°
Feels 30
Low
17°
Feels 17
Average Precipitation
11 Days
Rain amount
94.1mm
Snow amount
0cm
Content continues below
Daily Historical Averages
August 2026
S
M
T
W
T
F
S
1
2
29°
3
30°
4
25°
5
25°
6
28°
7
30°
8
31°
9
31°
10
30°
11
30°
12
30°
13
30°
14
29°
15
29°
16
29°
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Forecast
Sunday, August 2, 2026
Day
29°
Feels 29
Wind
14 km/h SE
Gust
21 km/h
Humidity
48%
P.O.P
10%
Night
19°
Feels 19
Wind
16 km/h SE
Gust
24 km/h
Humidity
94%
P.O.P
10%
Historical Averages
Aug 2
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.