S
M
T
W
T
F
S
30
83°
59°
31
80°
69°
1
85°
74°
2
77°
72°
3
87°
75°
4
87°
68°
5
80°
66°
6
74°
66°
7
74°
68°
8
74°
67°
9
73°
65°
10
74°
67°
11
76°
68°
12
75°
66°
13
76°
66°
14
75°
65°
15
73°
68°
16
72°
69°
17
72°
64°
18
70°
61°
19
70°
61°
20
71°
65°
21
74°
67°
22
76°
68°
23
77°
68°
24
77°
66°
25
75°
65°
26
75°
65°
27
76°
66°
28
75°
66°
29
76°
65°
30
70°
62°
1
66°
60°
2
69°
63°
3
73°
64°
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 66° to 87°, with overnight lows between 60° and 75°. The average high for September is 75° with an average low of 66°. 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.
