S
M
T
W
T
F
S
26
70°
46°
27
70°
46°
28
59°
45°
29
55°
43°
30
54°
36°
1
52°
36°
2
61°
32°
3
72°
52°
4
75°
46°
5
54°
37°
6
46°
34°
7
61°
32°
8
72°
41°
9
64°
45°
10
64°
37°
11
64°
37°
12
79°
48°
13
68°
48°
14
75°
43°
15
86°
55°
16
81°
59°
17
68°
57°
18
75°
61°
19
64°
45°
20
59°
41°
21
55°
48°
22
61°
48°
23
74°
52°
24
81°
56°
25
84°
60°
26
84°
60°
27
82°
57°
28
77°
55°
29
78°
53°
30
69°
49°
31
70°
55°
1
75°
55°
2
76°
54°
3
77°
54°
4
77°
57°
5
76°
56°
6
75°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Postville
Postville's May 2026 forecast shows daily high temperatures ranging from 69° to 84°, with overnight lows between 49° and 61°. The average high for May is 77° 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 Postville. See also: June | July | August.
