S
M
T
W
T
F
S
30
90°
61°
31
91°
59°
1
91°
60°
2
90°
60°
3
91°
59°
4
91°
57°
5
90°
55°
6
88°
53°
7
85°
57°
8
87°
57°
9
88°
54°
10
85°
48°
11
80°
47°
12
79°
52°
13
78°
55°
14
84°
47°
15
86°
45°
16
78°
45°
17
76°
46°
18
76°
44°
19
77°
42°
20
74°
43°
21
75°
44°
22
76°
46°
23
80°
51°
24
81°
51°
25
83°
50°
26
84°
50°
27
82°
52°
28
82°
41°
29
81°
41°
30
73°
50°
1
75°
45°
2
79°
49°
3
78°
47°
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 73° to 91°, with overnight lows between 41° and 61°. The average high for September is 82° with an average low of 50°. 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.
