S
M
T
W
T
F
S
26
70°
44°
27
71°
50°
28
61°
46°
29
55°
41°
30
54°
39°
1
53°
34°
2
59°
31°
3
71°
45°
4
78°
43°
5
54°
37°
6
52°
38°
7
57°
39°
8
59°
42°
9
62°
42°
10
62°
47°
11
65°
48°
12
68°
46°
13
69°
49°
14
67°
48°
15
69°
48°
16
70°
49°
17
73°
54°
18
72°
54°
19
73°
52°
20
71°
54°
21
67°
46°
22
64°
45°
23
65°
46°
24
66°
46°
25
66°
47°
26
67°
47°
27
66°
48°
28
68°
48°
29
68°
54°
30
71°
58°
31
72°
55°
1
71°
53°
2
75°
58°
3
75°
58°
4
78°
59°
5
78°
61°
6
77°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Peosta
Peosta's May 2026 forecast shows daily high temperatures ranging from 52° to 78°, with overnight lows between 37° and 62°. The average high for May is 68° with an average low of 49°. 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 Peosta. See also: June | July | August.