S
M
T
W
T
F
S
30
96°
72°
31
96°
71°
1
95°
70°
2
94°
68°
3
94°
67°
4
93°
70°
5
95°
68°
6
94°
69°
7
93°
70°
8
91°
69°
9
93°
70°
10
94°
70°
11
93°
68°
12
92°
67°
13
86°
67°
14
86°
66°
15
87°
67°
16
86°
67°
17
86°
66°
18
85°
61°
19
85°
60°
20
83°
59°
21
82°
59°
22
84°
64°
23
86°
65°
24
87°
64°
25
89°
65°
26
88°
64°
27
89°
63°
28
87°
62°
29
87°
60°
30
87°
61°
1
87°
62°
2
Hist. Avg.
81°
59°
3
Hist. Avg.
81°
59°
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 82° to 96°, with overnight lows between 59° and 72°. The average high for September is 89° 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 Atlanta. See also: October | November | December.
