S
M
T
W
T
F
S
30
91°
73°
31
94°
74°
1
94°
76°
2
95°
76°
3
96°
74°
4
93°
75°
5
94°
73°
6
95°
71°
7
85°
69°
8
88°
69°
9
90°
70°
10
93°
69°
11
95°
68°
12
92°
70°
13
89°
69°
14
87°
69°
15
90°
68°
16
87°
63°
17
79°
65°
18
77°
66°
19
78°
66°
20
80°
65°
21
82°
66°
22
80°
66°
23
84°
65°
24
81°
65°
25
77°
64°
26
81°
64°
27
82°
58°
28
76°
55°
29
74°
54°
30
74°
54°
1
75°
56°
2
74°
60°
3
75°
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 74° to 96°, with overnight lows between 54° and 75°. 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.
