S
M
T
W
T
F
S
27
59°
55°
28
56°
53°
29
64°
53°
30
66°
54°
1
71°
54°
2
79°
56°
3
66°
45°
4
60°
41°
5
61°
40°
6
58°
31°
7
65°
47°
8
71°
44°
9
64°
40°
10
66°
43°
11
68°
52°
12
65°
48°
13
62°
44°
14
61°
43°
15
60°
39°
16
60°
49°
17
61°
44°
18
59°
45°
19
58°
37°
20
53°
32°
21
51°
34°
22
51°
41°
23
52°
39°
24
56°
39°
25
53°
37°
26
51°
37°
27
50°
33°
28
49°
31°
29
49°
35°
30
59°
38°
31
59°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Great Barrington
Great Barrington's October 2026 forecast shows daily high temperatures ranging from 49° to 71°, with overnight lows between 31° and 52°. The average high for October is 58° with an average low of 40°. 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 Great Barrington. See also: November | December | January.