S
M
T
W
T
F
S
30
86°
76°
31
92°
75°
1
96°
75°
2
96°
75°
3
95°
76°
4
97°
72°
5
96°
72°
6
88°
69°
7
88°
70°
8
93°
71°
9
91°
66°
10
85°
62°
11
83°
65°
12
79°
62°
13
86°
62°
14
84°
61°
15
85°
61°
16
77°
55°
17
82°
61°
18
76°
58°
19
79°
60°
20
81°
60°
21
79°
59°
22
80°
58°
23
78°
59°
24
79°
59°
25
76°
56°
26
68°
48°
27
66°
46°
28
65°
45°
29
67°
48°
30
65°
45°
1
66°
53°
2
65°
51°
3
63°
48°
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 63° to 97°, with overnight lows between 45° and 72°. The average high for September is 79° with an average low of 59°. 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.
