S
M
T
W
T
F
S
26
77°
66°
27
76°
62°
28
78°
61°
29
74°
61°
30
75°
66°
31
74°
62°
1
77°
61°
2
78°
65°
3
77°
61°
4
78°
60°
5
75°
61°
6
74°
59°
7
73°
60°
8
72°
59°
9
74°
61°
10
74°
65°
11
77°
64°
12
79°
63°
13
76°
61°
14
74°
61°
15
74°
66°
16
78°
64°
17
79°
66°
18
79°
60°
19
76°
59°
20
73°
60°
21
73°
64°
22
76°
64°
23
75°
65°
24
78°
66°
25
79°
65°
26
77°
64°
27
78°
59°
28
76°
58°
29
72°
65°
30
77°
62°
31
77°
57°
1
Hist. Avg.
74°
60°
2
Hist. Avg.
74°
60°
3
Hist. Avg.
73°
60°
4
Hist. Avg.
73°
60°
5
Hist. Avg.
73°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Nantucket Town
Nantucket Town's August 2026 forecast shows daily high temperatures ranging from 72° to 79°, with overnight lows between 57° and 66°. The average high for August is 76° with an average low of 62°. 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 Nantucket Town. See also: September | October | November.
