S
M
T
W
T
F
S
30
75°
53°
31
76°
52°
1
74°
52°
2
73°
54°
3
73°
55°
4
72°
55°
5
74°
52°
6
73°
53°
7
71°
51°
8
72°
50°
9
71°
51°
10
72°
57°
11
71°
50°
12
71°
49°
13
74°
48°
14
72°
54°
15
73°
54°
16
70°
49°
17
68°
47°
18
69°
47°
19
69°
51°
20
71°
53°
21
72°
51°
22
67°
50°
23
72°
51°
24
69°
49°
25
70°
50°
26
64°
43°
27
69°
44°
28
62°
43°
29
61°
43°
30
61°
42°
1
Hist. Avg.
65°
48°
2
Hist. Avg.
64°
47°
3
Hist. Avg.
64°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Charlton
Charlton's September 2026 forecast shows daily high temperatures ranging from 61° to 76°, with overnight lows between 42° and 57°. The average high for September is 70° with an average low of 50°. 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 Charlton. See also: October | November | December.