S
M
T
W
T
F
S
30
85°
62°
31
84°
54°
1
80°
54°
2
78°
55°
3
79°
55°
4
80°
56°
5
81°
54°
6
76°
54°
7
76°
53°
8
77°
58°
9
77°
53°
10
76°
53°
11
77°
54°
12
77°
52°
13
76°
53°
14
75°
52°
15
76°
54°
16
75°
50°
17
76°
51°
18
74°
50°
19
75°
56°
20
73°
55°
21
73°
50°
22
72°
47°
23
Hist. Avg.
75°
53°
24
Hist. Avg.
75°
52°
25
Hist. Avg.
75°
52°
26
Hist. Avg.
74°
51°
27
Hist. Avg.
74°
51°
28
Hist. Avg.
73°
51°
29
Hist. Avg.
73°
50°
30
Hist. Avg.
73°
50°
1
Hist. Avg.
72°
49°
2
Hist. Avg.
72°
49°
3
Hist. Avg.
72°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Charles Town
Charles Town's September 2026 forecast shows daily high temperatures ranging from 72° to 85°, with overnight lows between 47° and 62°. The average high for September is 77° with an average low of 54°. 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 Charles Town. See also: October | November | December.