S
M
T
W
T
F
S
30
83°
54°
31
77°
62°
1
70°
57°
2
75°
56°
3
81°
61°
4
85°
60°
5
74°
57°
6
69°
52°
7
79°
47°
8
81°
52°
9
79°
57°
10
85°
66°
11
77°
52°
12
75°
66°
13
74°
64°
14
77°
55°
15
71°
58°
16
76°
64°
17
78°
63°
18
77°
55°
19
71°
54°
20
72°
51°
21
68°
54°
22
71°
53°
23
70°
55°
24
72°
52°
25
64°
48°
26
64°
50°
27
65°
54°
28
69°
53°
29
64°
51°
30
64°
52°
1
65°
54°
2
68°
53°
3
68°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mattapoisett Center
Mattapoisett Center's September 2026 forecast shows daily high temperatures ranging from 64° to 78°, with overnight lows between 48° and 66°. The average high for September is 70° with an average low of 55°. 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 Mattapoisett Center. See also: October | November | December.
