S
M
T
W
T
F
S
30
104°
72°
31
100°
72°
1
100°
69°
2
100°
72°
3
99°
73°
4
97°
72°
5
100°
73°
6
100°
72°
7
102°
78°
8
103°
78°
9
102°
68°
10
89°
66°
11
96°
70°
12
99°
71°
13
94°
64°
14
84°
59°
15
78°
58°
16
82°
63°
17
86°
63°
18
83°
60°
19
84°
59°
20
79°
56°
21
86°
63°
22
86°
63°
23
85°
62°
24
82°
62°
25
73°
61°
26
78°
61°
27
79°
60°
28
80°
61°
29
77°
60°
30
80°
49°
1
69°
47°
2
69°
46°
3
68°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Augusta
Augusta's September 2026 forecast shows daily high temperatures ranging from 68° to 103°, with overnight lows between 46° and 78°. The average high for September is 84° with an average low of 61°. 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 Augusta. See also: October | November | December.