S
M
T
W
T
F
S
26
72°
45°
27
64°
47°
28
56°
41°
29
63°
37°
30
58°
40°
1
59°
38°
2
69°
30°
3
77°
50°
4
82°
45°
5
60°
43°
6
62°
37°
7
74°
43°
8
79°
46°
9
78°
47°
10
74°
37°
11
86°
44°
12
82°
57°
13
80°
43°
14
83°
56°
15
93°
57°
16
87°
63°
17
86°
58°
18
77°
46°
19
63°
41°
20
69°
48°
21
68°
48°
22
73°
53°
23
75°
57°
24
79°
56°
25
78°
54°
26
82°
58°
27
83°
59°
28
84°
58°
29
78°
55°
30
80°
61°
31
82°
60°
1
82°
60°
2
77°
59°
3
74°
56°
4
75°
59°
5
80°
62°
6
81°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Missouri Valley
Missouri Valley's May 2026 forecast shows daily high temperatures ranging from 63° to 87°, with overnight lows between 41° and 63°. The average high for May is 78° 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 May weather will actually feel in Missouri Valley. See also: June | July | August.
