S
M
T
W
T
F
S
28
69°
56°
29
70°
57°
30
71°
62°
1
73°
61°
2
74°
60°
3
72°
58°
4
70°
56°
5
71°
56°
6
73°
58°
7
72°
64°
8
74°
66°
9
78°
66°
10
79°
62°
11
79°
65°
12
73°
63°
13
77°
60°
14
74°
60°
15
73°
61°
16
72°
61°
17
72°
64°
18
75°
62°
19
74°
61°
20
77°
60°
21
74°
63°
22
75°
60°
23
76°
61°
24
76°
63°
25
75°
61°
26
77°
63°
27
74°
62°
28
Hist. Avg.
77°
64°
29
Hist. Avg.
77°
64°
30
Hist. Avg.
77°
64°
31
Hist. Avg.
77°
64°
1
Hist. Avg.
77°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Nantucket
Nantucket's July 2026 forecast shows daily high temperatures ranging from 69° to 79°, with overnight lows between 56° and 66°. The average high for July is 74° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Nantucket. See also: August | September | October.
