S
M
T
W
T
F
S
30
99°
72°
31
100°
70°
1
93°
74°
2
93°
76°
3
86°
76°
4
92°
75°
5
95°
73°
6
92°
73°
7
97°
73°
8
98°
75°
9
94°
74°
10
92°
73°
11
96°
76°
12
97°
75°
13
95°
73°
14
96°
74°
15
93°
74°
16
92°
71°
17
94°
70°
18
93°
69°
19
90°
66°
20
90°
63°
21
89°
63°
22
88°
67°
23
87°
65°
24
88°
64°
25
89°
68°
26
88°
67°
27
83°
67°
28
86°
66°
29
87°
67°
30
88°
67°
1
88°
66°
2
86°
66°
3
86°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Montgomery
Montgomery's September 2026 forecast shows daily high temperatures ranging from 83° to 97°, with overnight lows between 63° and 76°. The average high for September is 90° with an average low of 68°. 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 Montgomery. See also: October | November | December.