S
M
T
W
T
F
S
30
74°
61°
31
68°
62°
1
72°
66°
2
78°
59°
3
77°
53°
4
75°
51°
5
76°
52°
6
75°
52°
7
77°
47°
8
77°
52°
9
71°
63°
10
71°
49°
11
70°
42°
12
78°
45°
13
72°
46°
14
63°
41°
15
63°
56°
16
68°
44°
17
70°
48°
18
62°
39°
19
61°
41°
20
66°
41°
21
64°
43°
22
66°
49°
23
67°
50°
24
66°
47°
25
65°
44°
26
66°
45°
27
62°
46°
28
63°
40°
29
61°
44°
30
62°
45°
1
60°
46°
2
65°
44°
3
62°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Huntsville
Huntsville's September 2026 forecast shows daily high temperatures ranging from 60° to 70°, with overnight lows between 39° and 56°. The average high for September is 64° with an average low of 45°. 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 Huntsville. See also: October | November | December.
