S
M
T
W
T
F
S
30
97°
70°
31
99°
73°
1
99°
73°
2
97°
73°
3
97°
71°
4
97°
72°
5
99°
73°
6
99°
72°
7
99°
71°
8
99°
71°
9
99°
74°
10
82°
68°
11
83°
67°
12
91°
69°
13
94°
72°
14
95°
74°
15
97°
72°
16
93°
75°
17
88°
72°
18
86°
67°
19
79°
63°
20
78°
60°
21
77°
64°
22
79°
65°
23
80°
64°
24
78°
59°
25
83°
66°
26
83°
65°
27
82°
65°
28
82°
64°
29
80°
64°
30
79°
63°
1
81°
63°
2
80°
62°
3
81°
63°
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 77° to 97°, with overnight lows between 59° and 75°. The average high for September is 84° with an average low of 66°. 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.
