S
M
T
W
T
F
S
30
77°
55°
31
78°
51°
1
81°
49°
2
76°
49°
3
72°
50°
4
73°
50°
5
73°
51°
6
76°
59°
7
82°
58°
8
84°
49°
9
79°
51°
10
75°
49°
11
75°
59°
12
78°
49°
13
80°
46°
14
72°
47°
15
73°
56°
16
76°
54°
17
81°
46°
18
73°
47°
19
72°
49°
20
77°
51°
21
72°
55°
22
75°
55°
23
80°
54°
24
80°
54°
25
79°
53°
26
80°
54°
27
80°
53°
28
79°
53°
29
78°
52°
30
79°
54°
1
79°
43°
2
78°
40°
3
67°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sioux Center
Sioux Center's September 2026 forecast shows daily high temperatures ranging from 67° to 84°, with overnight lows between 40° and 59°. The average high for September is 77° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Sioux Center. See also: October | November | December.
