S
M
T
W
T
F
S
30
83°
62°
31
79°
62°
1
76°
61°
2
76°
62°
3
82°
62°
4
83°
61°
5
83°
62°
6
85°
62°
7
89°
62°
8
88°
56°
9
87°
46°
10
78°
51°
11
74°
58°
12
80°
57°
13
83°
46°
14
80°
42°
15
71°
44°
16
72°
47°
17
72°
53°
18
71°
55°
19
73°
55°
20
80°
54°
21
80°
55°
22
83°
54°
23
83°
54°
24
82°
53°
25
82°
56°
26
81°
43°
27
81°
40°
28
67°
41°
29
66°
43°
30
68°
45°
1
71°
44°
2
69°
39°
3
71°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Atlantic
Atlantic's September 2026 forecast shows daily high temperatures ranging from 66° to 89°, with overnight lows between 39° and 62°. The average high for September is 78° with an average low of 52°. 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. See also: October | November | December.
