S
M
T
W
T
F
S
30
91°
66°
31
93°
68°
1
94°
67°
2
93°
68°
3
93°
67°
4
94°
70°
5
94°
69°
6
93°
69°
7
93°
68°
8
92°
69°
9
91°
68°
10
91°
68°
11
90°
67°
12
90°
67°
13
90°
66°
14
88°
67°
15
90°
66°
16
89°
66°
17
88°
65°
18
86°
65°
19
88°
64°
20
84°
64°
21
85°
63°
22
86°
64°
23
85°
64°
24
88°
63°
25
88°
62°
26
87°
62°
27
89°
61°
28
87°
61°
29
86°
60°
30
85°
61°
1
86°
59°
2
86°
61°
3
87°
61°
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 84° to 94°, with overnight lows between 59° and 70°. The average high for September is 89° 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.
