S
M
T
W
T
F
S
26
64°
42°
27
63°
45°
28
69°
48°
29
60°
50°
30
62°
48°
1
63°
45°
2
61°
47°
3
69°
49°
4
72°
53°
5
70°
54°
6
74°
53°
7
71°
49°
8
68°
52°
9
64°
49°
10
67°
47°
11
63°
45°
12
63°
45°
13
66°
50°
14
65°
52°
15
66°
50°
16
70°
57°
17
77°
49°
18
66°
48°
19
66°
49°
20
70°
58°
21
69°
59°
22
74°
59°
23
68°
57°
24
69°
55°
25
77°
61°
26
77°
57°
27
73°
53°
28
71°
57°
29
81°
58°
30
80°
61°
31
80°
60°
1
81°
61°
2
83°
60°
3
82°
61°
4
81°
58°
5
81°
63°
6
84°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Des Moines
Des Moines's May 2026 forecast shows daily high temperatures ranging from 60° to 84°, with overnight lows between 42° and 63°. The average high for May is 71° with an average low of 53°. 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 Des Moines. See also: June | July | August.