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
75°
43°
9
72°
37°
10
68°
39°
11
62°
41°
12
71°
53°
13
67°
48°
14
81°
61°
15
62°
47°
16
68°
48°
17
52°
37°
18
54°
43°
19
59°
45°
20
63°
47°
21
62°
46°
22
58°
46°
23
60°
47°
24
56°
44°
25
58°
43°
26
57°
42°
27
58°
46°
28
59°
38°
29
52°
36°
30
59°
45°
31
55°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Sag Harbor
Sag Harbor's October 2026 forecast shows daily high temperatures ranging from 52° to 68°, with overnight lows between 36° and 48°. The average high for October is 58° with an average low of 44°. 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 Sag Harbor. See also: November | December | January.
