S
M
T
W
T
F
S
30
76°
42°
31
76°
35°
1
75°
30°
2
66°
29°
3
64°
32°
4
69°
35°
5
73°
37°
6
72°
38°
7
72°
28°
8
63°
31°
9
62°
30°
10
64°
34°
11
68°
32°
12
72°
29°
13
63°
36°
14
71°
41°
15
73°
39°
16
71°
29°
17
66°
28°
18
63°
32°
19
70°
31°
20
70°
34°
21
69°
38°
22
70°
38°
23
65°
36°
24
60°
34°
25
57°
35°
26
63°
36°
27
66°
35°
28
65°
37°
29
65°
37°
30
62°
33°
1
56°
28°
2
55°
27°
3
55°
29°
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 55° to 76°, with overnight lows between 27° and 42°. 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.
