S
M
T
W
T
F
S
27
63°
59°
28
63°
57°
29
64°
55°
30
64°
59°
1
77°
59°
2
84°
66°
3
66°
46°
4
63°
46°
5
72°
46°
6
N/A
7
66°
54°
8
74°
52°
9
67°
45°
10
69°
53°
11
67°
58°
12
67°
55°
13
61°
49°
14
58°
47°
15
61°
45°
16
60°
50°
17
65°
49°
18
60°
43°
19
60°
45°
20
59°
41°
21
55°
38°
22
55°
46°
23
56°
38°
24
54°
36°
25
55°
45°
26
61°
45°
27
62°
35°
28
53°
35°
29
52°
34°
30
53°
42°
31
57°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Cohasset
Cohasset's October 2026 forecast shows daily high temperatures ranging from 52° to 74°, with overnight lows between 34° and 58°. The average high for October is 60° with an average low of 45°. 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 Cohasset. See also: November | December | January.
