S
M
T
W
T
F
S
26
74°
63°
27
76°
60°
28
77°
64°
29
72°
68°
30
69°
62°
31
76°
60°
1
78°
67°
2
78°
71°
3
75°
68°
4
81°
68°
5
78°
70°
6
81°
70°
7
83°
72°
8
84°
70°
9
83°
69°
10
83°
67°
11
83°
68°
12
81°
66°
13
80°
65°
14
79°
64°
15
79°
64°
16
76°
63°
17
77°
67°
18
77°
65°
19
76°
67°
20
76°
66°
21
77°
64°
22
76°
66°
23
79°
67°
24
81°
68°
25
80°
67°
26
75°
66°
27
75°
66°
28
76°
67°
29
77°
66°
30
80°
67°
31
78°
66°
1
80°
63°
2
73°
61°
3
73°
62°
4
74°
62°
5
73°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Edgartown
Edgartown's August 2026 forecast shows daily high temperatures ranging from 73° to 84°, with overnight lows between 60° and 72°. The average high for August is 78° with an average low of 66°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Edgartown. See also: September | October | November.
