S
M
T
W
T
F
S
26
93°
58°
27
86°
61°
28
90°
55°
29
67°
50°
30
60°
50°
1
62°
52°
2
73°
40°
3
78°
46°
4
88°
58°
5
79°
53°
6
73°
44°
7
78°
42°
8
90°
56°
9
97°
54°
10
72°
51°
11
79°
46°
12
95°
56°
13
96°
64°
14
98°
68°
15
98°
71°
16
99°
69°
17
98°
68°
18
96°
73°
19
80°
51°
20
68°
54°
21
75°
58°
22
88°
61°
23
86°
54°
24
84°
59°
25
86°
59°
26
70°
60°
27
82°
58°
28
89°
61°
29
87°
68°
30
98°
69°
31
100°
69°
1
98°
68°
2
89°
66°
3
81°
65°
4
80°
65°
5
85°
66°
6
90°
67°
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 80° to 100°, with overnight lows between 65° and 69°. The average high for May is 90° with an average low of 67°. 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.