S
M
T
W
T
F
S
30
92°
57°
31
93°
60°
1
92°
64°
2
97°
64°
3
96°
58°
4
89°
62°
5
90°
57°
6
93°
55°
7
90°
58°
8
90°
60°
9
94°
60°
10
94°
62°
11
96°
64°
12
96°
64°
13
98°
60°
14
96°
55°
15
89°
58°
16
88°
58°
17
90°
59°
18
91°
61°
19
94°
59°
20
95°
59°
21
94°
58°
22
90°
53°
23
86°
52°
24
85°
51°
25
84°
50°
26
83°
52°
27
83°
56°
28
85°
55°
29
90°
50°
30
86°
58°
1
86°
56°
2
Hist. Avg.
86°
54°
3
Hist. Avg.
86°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Anderson
Anderson's September 2026 forecast shows daily high temperatures ranging from 83° to 98°, with overnight lows between 50° and 64°. The average high for September is 91° with an average low of 58°. 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 Anderson. See also: October | November | December.