S
M
T
W
T
F
S
30
91°
70°
31
88°
69°
1
90°
68°
2
88°
68°
3
83°
67°
4
89°
70°
5
89°
69°
6
88°
69°
7
84°
69°
8
83°
69°
9
84°
68°
10
86°
66°
11
86°
67°
12
85°
64°
13
85°
67°
14
83°
67°
15
80°
66°
16
82°
64°
17
84°
66°
18
86°
65°
19
86°
66°
20
83°
65°
21
84°
65°
22
85°
64°
23
84°
64°
24
84°
58°
25
81°
59°
26
83°
63°
27
82°
63°
28
79°
62°
29
82°
62°
30
79°
61°
1
80°
58°
2
80°
53°
3
77°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Atlanta
Atlanta's September 2026 forecast shows daily high temperatures ranging from 77° to 91°, with overnight lows between 53° and 70°. The average high for September is 84° with an average low of 65°. 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 Atlanta. See also: October | November | December.
