S
M
T
W
T
F
S
27
76°
61°
28
75°
61°
29
74°
58°
30
67°
54°
1
65°
53°
2
67°
58°
3
72°
59°
4
73°
58°
5
72°
57°
6
73°
58°
7
72°
57°
8
72°
57°
9
71°
56°
10
71°
56°
11
68°
55°
12
64°
48°
13
61°
45°
14
62°
48°
15
64°
47°
16
62°
43°
17
60°
52°
18
60°
54°
19
68°
50°
20
69°
51°
21
66°
48°
22
59°
51°
23
61°
50°
24
59°
51°
25
61°
51°
26
64°
50°
27
62°
45°
28
67°
40°
29
66°
40°
30
56°
44°
31
59°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Stony Brook
Stony Brook's October 2026 forecast shows daily high temperatures ranging from 56° to 76°, with overnight lows between 40° and 61°. The average high for October is 66° with an average low of 52°. 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 Stony Brook. See also: November | December | January.
