S
M
T
W
T
F
S
30
83°
68°
31
82°
67°
1
81°
66°
2
81°
63°
3
80°
63°
4
80°
62°
5
81°
62°
6
81°
63°
7
82°
62°
8
84°
63°
9
83°
62°
10
82°
61°
11
83°
63°
12
83°
65°
13
84°
65°
14
84°
64°
15
83°
65°
16
82°
65°
17
83°
63°
18
81°
63°
19
80°
62°
20
79°
63°
21
80°
62°
22
80°
62°
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 79° to 84°, with overnight lows between 61° and 68°. The average high for September is 82° 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 Austell. See also: October | November | December.