S
M
T
W
T
F
S
27
73°
61°
28
68°
59°
29
62°
56°
30
67°
59°
1
75°
59°
2
75°
60°
3
66°
48°
4
63°
55°
5
70°
47°
6
61°
45°
7
62°
51°
8
68°
55°
9
68°
50°
10
64°
48°
11
66°
54°
12
66°
50°
13
64°
50°
14
65°
48°
15
63°
46°
16
60°
48°
17
65°
51°
18
65°
50°
19
61°
51°
20
63°
50°
21
66°
49°
22
60°
48°
23
60°
49°
24
64°
48°
25
60°
48°
26
61°
47°
27
58°
47°
28
55°
45°
29
57°
47°
30
58°
46°
31
57°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Hyannis
Hyannis's October 2026 forecast shows daily high temperatures ranging from 55° to 75°, with overnight lows between 45° and 60°. The average high for October is 63° with an average low of 49°. 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 Hyannis. See also: November | December | January.
