S
M
T
W
T
F
S
30
82°
66°
31
86°
65°
1
87°
65°
2
86°
63°
3
84°
64°
4
80°
64°
5
84°
63°
6
86°
56°
7
82°
54°
8
75°
54°
9
76°
61°
10
75°
62°
11
81°
61°
12
79°
61°
13
83°
52°
14
79°
52°
15
72°
53°
16
71°
55°
17
71°
50°
18
72°
50°
19
75°
47°
20
71°
49°
21
70°
57°
22
72°
56°
23
79°
57°
24
78°
58°
25
78°
57°
26
77°
57°
27
80°
56°
28
76°
52°
29
73°
51°
30
72°
52°
1
74°
50°
2
75°
53°
3
67°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in West Des Moines
West Des Moines's September 2026 forecast shows daily high temperatures ranging from 67° to 87°, with overnight lows between 43° and 66°. The average high for September is 77° with an average low of 56°. 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 West Des Moines. See also: October | November | December.
