S
M
T
W
T
F
S
30
68°
39°
31
71°
41°
1
71°
40°
2
69°
38°
3
66°
38°
4
67°
36°
5
66°
33°
6
66°
33°
7
67°
36°
8
67°
33°
9
66°
32°
10
65°
37°
11
67°
38°
12
69°
35°
13
71°
30°
14
63°
27°
15
60°
28°
16
62°
29°
17
65°
31°
18
69°
31°
19
70°
34°
20
69°
36°
21
69°
35°
22
68°
36°
23
70°
38°
24
70°
37°
25
68°
36°
26
67°
34°
27
63°
36°
28
64°
33°
29
63°
32°
30
61°
32°
1
60°
33°
2
63°
33°
3
57°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Atlantic City
Atlantic City's September 2026 forecast shows daily high temperatures ranging from 57° to 71°, with overnight lows between 24° and 41°. The average high for September is 66° with an average low of 34°. 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 Atlantic City. See also: October | November | December.
