S
M
T
W
T
F
S
30
73°
59°
31
72°
55°
1
71°
59°
2
69°
64°
3
71°
66°
4
70°
54°
5
68°
56°
6
71°
60°
7
71°
59°
8
65°
56°
9
64°
52°
10
63°
53°
11
67°
56°
12
68°
54°
13
69°
55°
14
64°
50°
15
66°
51°
16
63°
49°
17
64°
52°
18
65°
54°
19
66°
54°
20
63°
52°
21
65°
53°
22
66°
54°
23
66°
51°
24
64°
48°
25
63°
47°
26
64°
47°
27
65°
52°
28
65°
52°
29
64°
53°
30
65°
53°
1
66°
52°
2
66°
53°
3
65°
52°
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 63° to 71°, with overnight lows between 47° and 66°. The average high for September is 66° 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 Charlton. See also: October | November | December.