S
M
T
W
T
F
S
30
72°
52°
31
73°
51°
1
70°
51°
2
70°
50°
3
69°
50°
4
67°
49°
5
65°
48°
6
65°
47°
7
68°
49°
8
68°
46°
9
69°
45°
10
67°
48°
11
66°
46°
12
69°
45°
13
65°
46°
14
64°
47°
15
65°
48°
16
68°
42°
17
68°
41°
18
62°
39°
19
61°
44°
20
61°
39°
21
64°
39°
22
59°
45°
23
62°
39°
24
65°
38°
25
60°
42°
26
62°
38°
27
63°
39°
28
59°
36°
29
64°
37°
30
56°
36°
1
55°
37°
2
56°
40°
3
56°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mobile
Mobile's September 2026 forecast shows daily high temperatures ranging from 55° to 73°, with overnight lows between 36° and 52°. The average high for September is 64° with an average low of 44°. 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 Mobile. See also: October | November | December.