S
M
T
W
T
F
S
30
100°
75°
31
100°
75°
1
98°
77°
2
93°
77°
3
86°
76°
4
92°
73°
5
91°
75°
6
94°
75°
7
95°
71°
8
96°
72°
9
94°
71°
10
95°
72°
11
94°
74°
12
94°
72°
13
93°
72°
14
91°
70°
15
89°
66°
16
92°
69°
17
92°
70°
18
89°
69°
19
91°
68°
20
92°
69°
21
91°
69°
22
91°
68°
23
90°
69°
24
90°
68°
25
88°
68°
26
89°
67°
27
84°
63°
28
82°
59°
29
83°
59°
30
82°
58°
1
86°
59°
2
88°
65°
3
83°
57°
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 82° to 96°, with overnight lows between 57° and 77°. The average high for September is 90° 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 Anderson. See also: October | November | December.
