S
M
T
W
T
F
S
30
91°
73°
31
94°
74°
1
94°
76°
2
95°
76°
3
96°
77°
4
95°
75°
5
97°
73°
6
95°
72°
7
83°
72°
8
88°
71°
9
89°
71°
10
91°
73°
11
88°
71°
12
83°
70°
13
88°
71°
14
92°
70°
15
91°
70°
16
89°
69°
17
89°
67°
18
88°
66°
19
84°
62°
20
81°
61°
21
78°
58°
22
80°
60°
23
81°
63°
24
82°
60°
25
83°
64°
26
82°
61°
27
83°
59°
28
83°
63°
29
84°
63°
30
84°
62°
1
83°
63°
2
83°
62°
3
82°
62°
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 78° to 92°, with overnight lows between 58° and 71°. The average high for September is 84° with an average low of 64°. 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.
