S
M
T
W
T
F
S
30
98°
74°
31
95°
69°
1
96°
72°
2
98°
73°
3
101°
71°
4
103°
74°
5
100°
73°
6
99°
74°
7
99°
74°
8
98°
74°
9
95°
72°
10
97°
73°
11
98°
72°
12
101°
73°
13
97°
71°
14
94°
68°
15
94°
68°
16
97°
70°
17
86°
61°
18
79°
65°
19
80°
64°
20
80°
65°
21
82°
65°
22
84°
64°
23
83°
61°
24
82°
64°
25
83°
59°
26
77°
54°
27
76°
53°
28
77°
53°
29
77°
55°
30
79°
55°
1
80°
56°
2
82°
55°
3
77°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Post
Post's September 2026 forecast shows daily high temperatures ranging from 76° to 103°, with overnight lows between 50° and 74°. The average high for September is 88° with an average low of 65°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Post. See also: October | November | December.
