S
M
T
W
T
F
S
30
84°
55°
31
83°
58°
1
83°
60°
2
82°
59°
3
82°
60°
4
81°
59°
5
81°
59°
6
78°
58°
7
79°
58°
8
79°
57°
9
80°
56°
10
80°
57°
11
79°
56°
12
81°
57°
13
81°
58°
14
80°
58°
15
79°
57°
16
79°
57°
17
77°
56°
18
73°
53°
19
73°
45°
20
69°
54°
21
70°
53°
22
71°
46°
23
68°
45°
24
68°
47°
25
71°
53°
26
73°
53°
27
67°
46°
28
67°
45°
29
66°
45°
30
66°
51°
1
67°
52°
2
66°
43°
3
66°
41°
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 66° to 84°, with overnight lows between 41° and 60°. The average high for September is 75° with an average low of 53°. 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.