S
M
T
W
T
F
S
30
90°
71°
31
91°
70°
1
94°
70°
2
95°
70°
3
97°
72°
4
97°
72°
5
97°
72°
6
95°
73°
7
91°
72°
8
88°
72°
9
91°
68°
10
91°
68°
11
90°
68°
12
88°
72°
13
91°
68°
14
95°
68°
15
95°
72°
16
91°
72°
17
91°
68°
18
95°
68°
19
97°
70°
20
91°
72°
21
95°
68°
22
N/A
23
73°
64°
24
81°
64°
25
81°
59°
26
82°
54°
27
82°
48°
28
82°
46°
29
86°
54°
30
90°
57°
1
89°
67°
2
89°
69°
3
86°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Cullman
Cullman's September 2026 forecast shows daily high temperatures ranging from 86° to 89°, with overnight lows between 67° and 71°. The average high for September is 88° with an average low of 69°. 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 Cullman. See also: October | November | December.