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7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Sioux Falls, SD
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September
Average Temperature
High
24°
Feels 24
Low
12°
Feels 11
Average Precipitation
8 Days
Rain amount
57.1mm
Snow amount
0.1cm
Content continues below
Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
22°
14
24°
15
22°
16
18°
17
23°
18
21°
19
22°
20
22°
21
22°
22
22°
23
22°
24
23°
25
24°
26
23°
27
23°
28
29
30
Forecast
Sunday, September 13, 2026
Day
22°
Feels 22
Wind
15 km/h NE
Gust
23 km/h
Humidity
41%
P.O.P
40%
Rain
<1 mm
Night
14°
Feels 12
Wind
25 km/h SE
Gust
38 km/h
Humidity
82%
P.O.P
40%
Rain
<1 mm
Historical Averages
Sep 13
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.