S
M
T
W
T
F
S
30
84°
65°
31
91°
70°
1
94°
73°
2
95°
74°
3
95°
75°
4
96°
73°
5
91°
69°
6
79°
64°
7
81°
63°
8
87°
69°
9
91°
67°
10
77°
53°
11
76°
59°
12
81°
62°
13
83°
63°
14
78°
61°
15
77°
57°
16
76°
54°
17
75°
57°
18
76°
54°
19
75°
52°
20
71°
54°
21
76°
59°
22
70°
59°
23
73°
58°
24
78°
59°
25
79°
59°
26
79°
58°
27
78°
59°
28
79°
59°
29
79°
58°
30
78°
59°
1
78°
55°
2
76°
48°
3
64°
45°
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 64° to 91°, with overnight lows between 45° and 69°. The average high for September is 77° 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.