S
M
T
W
T
F
S
30
86°
68°
31
85°
65°
1
82°
64°
2
81°
64°
3
83°
63°
4
85°
65°
5
85°
67°
6
84°
65°
7
80°
63°
8
80°
63°
9
81°
61°
10
79°
60°
11
79°
60°
12
80°
59°
13
78°
60°
14
77°
59°
15
78°
60°
16
79°
59°
17
78°
63°
18
81°
62°
19
81°
63°
20
78°
59°
21
77°
58°
22
75°
56°
23
Hist. Avg.
80°
61°
24
Hist. Avg.
80°
61°
25
Hist. Avg.
79°
61°
26
Hist. Avg.
79°
60°
27
Hist. Avg.
79°
60°
28
Hist. Avg.
78°
60°
29
Hist. Avg.
78°
59°
30
Hist. Avg.
78°
58°
1
Hist. Avg.
77°
58°
2
Hist. Avg.
77°
57°
3
Hist. Avg.
77°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Austell
Austell's September 2026 forecast shows daily high temperatures ranging from 75° to 86°, with overnight lows between 56° and 68°. The average high for September is 81° with an average low of 62°. 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 Austell. See also: October | November | December.