S
M
T
W
T
F
S
30
91°
73°
31
93°
74°
1
96°
75°
2
97°
76°
3
98°
77°
4
96°
75°
5
99°
74°
6
97°
70°
7
97°
70°
8
90°
71°
9
91°
71°
10
92°
75°
11
91°
73°
12
87°
73°
13
92°
73°
14
94°
74°
15
89°
69°
16
89°
69°
17
90°
70°
18
87°
69°
19
85°
67°
20
83°
65°
21
79°
61°
22
79°
62°
23
83°
65°
24
82°
59°
25
85°
70°
26
83°
67°
27
84°
68°
28
87°
69°
29
87°
69°
30
86°
70°
1
85°
69°
2
86°
68°
3
86°
68°
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 79° to 94°, with overnight lows between 59° and 74°. The average high for September is 86° with an average low of 68°. 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.