S
M
T
W
T
F
S
30
81°
66°
31
89°
59°
1
86°
53°
2
86°
61°
3
90°
67°
4
86°
64°
5
82°
68°
6
78°
67°
7
81°
68°
8
85°
60°
9
75°
52°
10
77°
57°
11
78°
57°
12
79°
58°
13
76°
54°
14
73°
53°
15
74°
55°
16
78°
56°
17
77°
56°
18
70°
48°
19
74°
54°
20
75°
53°
21
67°
53°
22
71°
52°
23
71°
53°
24
73°
53°
25
68°
52°
26
69°
53°
27
71°
53°
28
71°
52°
29
68°
51°
30
66°
50°
1
58°
45°
2
56°
40°
3
56°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in St. Augusta
St. Augusta's September 2026 forecast shows daily high temperatures ranging from 56° to 85°, with overnight lows between 39° and 68°. The average high for September is 72° with an average low of 54°. 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 St. Augusta. See also: October | November | December.
