S
M
T
W
T
F
S
27
68°
59°
28
62°
58°
29
71°
58°
30
72°
61°
1
75°
61°
2
81°
64°
3
72°
57°
4
64°
55°
5
71°
54°
6
62°
45°
7
64°
43°
8
76°
54°
9
73°
48°
10
70°
50°
11
61°
54°
12
71°
55°
13
68°
54°
14
81°
63°
15
64°
55°
16
71°
50°
17
55°
40°
18
56°
45°
19
60°
50°
20
63°
50°
21
64°
49°
22
60°
48°
23
63°
47°
24
58°
46°
25
62°
47°
26
60°
46°
27
62°
48°
28
63°
44°
29
53°
38°
30
60°
47°
31
57°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in West Islip
West Islip's October 2026 forecast shows daily high temperatures ranging from 53° to 71°, with overnight lows between 38° and 55°. The average high for October is 61° with an average low of 47°. 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 West Islip. See also: November | December | January.
