S
M
T
W
T
F
S
30
83°
73°
31
87°
74°
1
86°
75°
2
87°
74°
3
85°
77°
4
86°
77°
5
87°
73°
6
83°
75°
7
84°
76°
8
83°
76°
9
82°
75°
10
84°
75°
11
85°
74°
12
85°
75°
13
84°
75°
14
85°
74°
15
85°
75°
16
84°
74°
17
85°
74°
18
84°
73°
19
84°
71°
20
83°
71°
21
83°
73°
22
82°
73°
23
83°
72°
24
84°
69°
25
83°
67°
26
82°
70°
27
81°
71°
28
81°
70°
29
80°
69°
30
81°
71°
1
80°
70°
2
81°
70°
3
77°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Charleston Central
Charleston Central's September 2026 forecast shows daily high temperatures ranging from 77° to 87°, with overnight lows between 67° and 77°. The average high for September is 83° with an average low of 73°. 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 Charleston Central. See also: October | November | December.