S
M
T
W
T
F
S
30
75°
60°
31
76°
58°
1
74°
57°
2
73°
59°
3
73°
62°
4
74°
60°
5
74°
58°
6
75°
59°
7
72°
58°
8
73°
57°
9
72°
58°
10
72°
63°
11
73°
57°
12
75°
57°
13
75°
56°
14
74°
62°
15
74°
61°
16
73°
56°
17
70°
55°
18
71°
55°
19
71°
60°
20
72°
61°
21
74°
60°
22
72°
58°
23
75°
59°
24
74°
57°
25
72°
58°
26
68°
51°
27
73°
53°
28
66°
52°
29
65°
52°
30
65°
51°
1
Hist. Avg.
68°
48°
2
Hist. Avg.
68°
47°
3
Hist. Avg.
67°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Edgartown
Edgartown's September 2026 forecast shows daily high temperatures ranging from 65° to 76°, with overnight lows between 51° and 63°. The average high for September is 72° with an average low of 58°. 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 Edgartown. See also: October | November | December.
