S
M
T
W
T
F
S
30
66°
46°
31
67°
51°
1
69°
51°
2
72°
50°
3
72°
51°
4
67°
44°
5
67°
49°
6
68°
46°
7
69°
44°
8
68°
45°
9
64°
43°
10
64°
48°
11
66°
46°
12
69°
41°
13
67°
41°
14
61°
43°
15
62°
42°
16
65°
40°
17
62°
40°
18
61°
42°
19
61°
45°
20
62°
48°
21
66°
43°
22
66°
43°
23
64°
44°
24
62°
41°
25
63°
40°
26
61°
45°
27
63°
41°
28
64°
40°
29
59°
41°
30
57°
41°
1
58°
40°
2
58°
39°
3
57°
41°
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 57° to 72°, with overnight lows between 39° and 51°. 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.