S
M
T
W
T
F
S
26
72°
53°
27
72°
48°
28
56°
44°
29
60°
44°
30
56°
42°
1
58°
39°
2
63°
37°
3
76°
51°
4
82°
49°
5
59°
44°
6
58°
40°
7
70°
40°
8
76°
46°
9
74°
47°
10
72°
41°
11
75°
45°
12
78°
55°
13
76°
50°
14
80°
52°
15
88°
59°
16
82°
60°
17
82°
62°
18
79°
62°
19
66°
48°
20
62°
43°
21
64°
51°
22
68°
55°
23
73°
57°
24
81°
52°
25
85°
64°
26
89°
60°
27
90°
65°
28
87°
62°
29
84°
62°
30
83°
58°
31
78°
56°
1
83°
59°
2
82°
58°
3
81°
59°
4
82°
63°
5
89°
66°
6
89°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in West Des Moines
West Des Moines's May 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 56° and 67°. The average high for May is 85° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in West Des Moines. See also: June | July | August.