S
M
T
W
T
F
S
26
57°
21°
27
61°
30°
28
63°
23°
29
66°
25°
30
73°
32°
1
79°
34°
2
77°
43°
3
79°
39°
4
79°
37°
5
79°
39°
6
81°
39°
7
77°
37°
8
72°
34°
9
79°
32°
10
77°
36°
11
79°
32°
12
88°
39°
13
63°
41°
14
68°
27°
15
64°
37°
16
54°
33°
17
58°
31°
18
65°
34°
19
69°
40°
20
74°
44°
21
77°
37°
22
77°
36°
23
81°
43°
24
74°
42°
25
71°
37°
26
67°
38°
27
69°
39°
28
68°
39°
29
70°
38°
30
64°
37°
31
68°
43°
1
74°
45°
2
76°
46°
3
77°
46°
4
76°
45°
5
76°
44°
6
75°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Post
Post's May 2026 forecast shows daily high temperatures ranging from 54° to 81°, with overnight lows between 31° and 46°. The average high for May is 71° with an average low of 40°. 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 Post. See also: June | July | August.