S
M
T
W
T
F
S
30
89°
71°
31
91°
71°
1
93°
71°
2
94°
73°
3
94°
72°
4
95°
73°
5
94°
69°
6
94°
69°
7
91°
68°
8
94°
70°
9
94°
70°
10
92°
69°
11
93°
63°
12
86°
66°
13
87°
65°
14
86°
66°
15
86°
65°
16
79°
65°
17
80°
63°
18
83°
65°
19
83°
64°
20
78°
63°
21
81°
61°
22
80°
60°
23
81°
61°
24
83°
62°
25
84°
63°
26
80°
61°
27
75°
62°
28
77°
62°
29
76°
61°
30
81°
61°
1
76°
60°
2
76°
60°
3
77°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Acworth
Acworth's September 2026 forecast shows daily high temperatures ranging from 75° to 95°, with overnight lows between 59° and 73°. The average high for September is 85° 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 Acworth. See also: October | November | December.