S
M
T
W
T
F
S
30
99°
76°
31
99°
76°
1
94°
76°
2
90°
76°
3
83°
75°
4
94°
77°
5
95°
75°
6
93°
75°
7
97°
76°
8
97°
78°
9
93°
76°
10
93°
75°
11
97°
75°
12
98°
79°
13
98°
76°
14
98°
77°
15
98°
78°
16
96°
75°
17
94°
76°
18
93°
73°
19
95°
68°
20
97°
71°
21
97°
75°
22
97°
74°
23
97°
75°
24
93°
67°
25
93°
71°
26
93°
72°
27
90°
72°
28
90°
73°
29
83°
70°
30
81°
67°
1
85°
66°
2
83°
63°
3
83°
66°
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 81° to 97°, with overnight lows between 63° and 75°. The average high for September is 89° with an average low of 70°. 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.
