S
M
T
W
T
F
S
30
74°
61°
31
78°
59°
1
73°
59°
2
73°
58°
3
72°
64°
4
72°
60°
5
77°
57°
6
72°
56°
7
71°
57°
8
72°
58°
9
71°
57°
10
73°
62°
11
75°
61°
12
70°
61°
13
69°
63°
14
76°
62°
15
Hist. Avg.
71°
59°
16
Hist. Avg.
70°
59°
17
Hist. Avg.
70°
58°
18
Hist. Avg.
70°
58°
19
Hist. Avg.
70°
58°
20
Hist. Avg.
69°
58°
21
Hist. Avg.
69°
57°
22
Hist. Avg.
69°
57°
23
Hist. Avg.
68°
57°
24
Hist. Avg.
68°
56°
25
Hist. Avg.
68°
56°
26
Hist. Avg.
67°
56°
27
Hist. Avg.
67°
55°
28
Hist. Avg.
67°
55°
29
Hist. Avg.
66°
55°
30
Hist. Avg.
66°
54°
1
Hist. Avg.
66°
54°
2
Hist. Avg.
66°
54°
3
Hist. Avg.
65°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in West Chatham
West Chatham's September 2026 forecast shows daily high temperatures ranging from 69° to 78°, with overnight lows between 56° and 64°. The average high for September is 73° with an average low of 60°. 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 West Chatham. See also: October | November | December.