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
63°
43°
7
64°
39°
8
73°
48°
9
70°
45°
10
63°
41°
11
60°
52°
12
65°
54°
13
64°
59°
14
64°
49°
15
63°
44°
16
58°
46°
17
52°
38°
18
51°
41°
19
56°
46°
20
65°
43°
21
62°
42°
22
58°
45°
23
60°
44°
24
61°
40°
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
October Weather in Cohasset
Cohasset's October 2026 forecast shows daily high temperatures ranging from 51° to 65°, with overnight lows between 34° and 59°. The average high for October is 59° 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 Cohasset. See also: November | December | January.
