S
M
T
W
T
F
S
30
90°
72°
31
94°
71°
1
94°
71°
2
97°
71°
3
99°
73°
4
98°
73°
5
100°
71°
6
99°
72°
7
91°
71°
8
89°
71°
9
92°
71°
10
95°
70°
11
91°
70°
12
88°
73°
13
94°
67°
14
97°
70°
15
97°
73°
16
96°
67°
17
95°
69°
18
98°
69°
19
96°
70°
20
94°
70°
21
91°
70°
22
82°
65°
23
83°
60°
24
82°
57°
25
81°
60°
26
83°
61°
27
82°
60°
28
80°
55°
29
85°
60°
30
84°
61°
1
84°
61°
2
83°
60°
3
84°
61°
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 80° to 98°, with overnight lows between 55° and 73°. The average high for September is 87° with an average low of 64°. 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.
