S
M
T
W
T
F
S
30
90°
72°
31
94°
70°
1
96°
71°
2
96°
71°
3
96°
71°
4
94°
74°
5
98°
71°
6
90°
70°
7
86°
68°
8
88°
68°
9
88°
69°
10
92°
68°
11
92°
71°
12
91°
69°
13
91°
68°
14
88°
68°
15
91°
65°
16
86°
67°
17
82°
66°
18
80°
67°
19
81°
67°
20
82°
66°
21
82°
66°
22
83°
65°
23
85°
66°
24
82°
65°
25
79°
65°
26
82°
64°
27
85°
63°
28
84°
56°
29
77°
55°
30
77°
55°
1
78°
58°
2
79°
61°
3
77°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Aiken
Aiken's September 2026 forecast shows daily high temperatures ranging from 77° to 98°, with overnight lows between 55° and 74°. The average high for September is 86° with an average low of 66°. 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 Aiken. See also: October | November | December.
