S
M
T
W
T
F
S
30
80°
58°
31
76°
58°
1
72°
59°
2
74°
64°
3
74°
58°
4
77°
64°
5
74°
64°
6
78°
59°
7
77°
58°
8
71°
57°
9
72°
57°
10
71°
62°
11
72°
56°
12
75°
56°
13
70°
55°
14
69°
61°
15
71°
62°
16
74°
53°
17
76°
53°
18
67°
54°
19
66°
54°
20
66°
55°
21
67°
55°
22
65°
56°
23
65°
56°
24
66°
55°
25
68°
57°
26
71°
58°
27
70°
55°
28
72°
50°
29
64°
50°
30
62°
55°
1
63°
56°
2
68°
57°
3
67°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in South Chatham
South Chatham's September 2026 forecast shows daily high temperatures ranging from 62° to 80°, with overnight lows between 50° and 64°. The average high for September is 71° with an average low of 57°. 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 South Chatham. See also: October | November | December.