S
M
T
W
T
F
S
28
84°
66°
29
90°
63°
30
88°
64°
1
90°
68°
2
99°
73°
3
99°
82°
4
97°
72°
5
84°
66°
6
66°
61°
7
68°
63°
8
84°
61°
9
86°
68°
10
88°
72°
11
86°
66°
12
88°
61°
13
84°
64°
14
86°
73°
15
91°
71°
16
86°
68°
17
82°
67°
18
77°
70°
19
82°
67°
20
81°
70°
21
81°
69°
22
80°
70°
23
81°
69°
24
81°
69°
25
82°
68°
26
83°
68°
27
82°
69°
28
79°
71°
29
80°
70°
30
79°
69°
31
79°
70°
1
80°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Shelter Island Heights
Shelter Island Heights's July 2026 forecast shows daily high temperatures ranging from 77° to 91°, with overnight lows between 67° and 73°. The average high for July is 82° with an average low of 69°. 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 Shelter Island Heights. See also: August | September | October.