S
M
T
W
T
F
S
30
83°
62°
31
81°
56°
1
78°
55°
2
75°
56°
3
76°
56°
4
77°
57°
5
76°
55°
6
74°
55°
7
75°
56°
8
75°
58°
9
76°
55°
10
73°
54°
11
74°
55°
12
75°
54°
13
74°
55°
14
74°
54°
15
73°
56°
16
74°
52°
17
73°
53°
18
72°
53°
19
72°
58°
20
74°
58°
21
Hist. Avg.
74°
52°
22
Hist. Avg.
73°
52°
23
Hist. Avg.
73°
51°
24
Hist. Avg.
73°
51°
25
Hist. Avg.
72°
50°
26
Hist. Avg.
72°
50°
27
Hist. Avg.
71°
49°
28
Hist. Avg.
71°
49°
29
Hist. Avg.
70°
49°
30
Hist. Avg.
70°
48°
1
Hist. Avg.
70°
48°
2
Hist. Avg.
69°
47°
3
Hist. Avg.
69°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Chatham
Chatham's September 2026 forecast shows daily high temperatures ranging from 72° to 83°, with overnight lows between 52° and 62°. The average high for September is 75° with an average low of 56°. 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 Chatham. See also: October | November | December.
