S
M
T
W
T
F
S
26
86°
56°
27
73°
55°
28
73°
53°
29
77°
55°
30
81°
56°
1
76°
57°
2
81°
46°
3
79°
53°
4
64°
50°
5
62°
49°
6
67°
49°
7
78°
46°
8
85°
56°
9
87°
62°
10
86°
62°
11
82°
62°
12
89°
65°
13
83°
64°
14
87°
65°
15
77°
57°
16
72°
56°
17
86°
56°
18
90°
71°
19
80°
64°
20
78°
56°
21
69°
56°
22
76°
56°
23
78°
49°
24
76°
54°
25
79°
55°
26
80°
57°
27
82°
58°
28
78°
56°
29
78°
56°
30
83°
58°
31
88°
54°
1
86°
53°
2
87°
51°
3
86°
59°
4
86°
59°
5
85°
58°
6
85°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Official Post
Official Post's May 2026 forecast shows daily high temperatures ranging from 76° to 88°, with overnight lows between 51° and 59°. The average high for May is 83° 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 Official Post. See also: June | July | August.