S
M
T
W
T
F
S
27
N/A
28
63°
57°
29
72°
55°
30
68°
52°
1
73°
54°
2
74°
66°
3
72°
48°
4
63°
55°
5
72°
53°
6
61°
35°
7
64°
31°
8
72°
55°
9
70°
53°
10
65°
53°
11
65°
59°
12
68°
56°
13
70°
53°
14
64°
48°
15
61°
52°
16
67°
56°
17
67°
52°
18
63°
48°
19
62°
50°
20
62°
51°
21
63°
48°
22
57°
52°
23
58°
44°
24
56°
42°
25
56°
51°
26
63°
51°
27
64°
41°
28
54°
41°
29
54°
42°
30
55°
47°
31
59°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Shelter Island
Shelter Island's October 2026 forecast shows daily high temperatures ranging from 54° to 72°, with overnight lows between 41° and 59°. The average high for October is 62° with an average low of 50°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Shelter Island. See also: November | December | January.
