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
68°
44°
4
63°
49°
5
64°
38°
6
56°
34°
7
64°
44°
8
68°
44°
9
67°
46°
10
61°
44°
11
66°
49°
12
65°
54°
13
64°
44°
14
60°
43°
15
64°
44°
16
65°
38°
17
63°
43°
18
62°
43°
19
53°
33°
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 68°, with overnight lows between 31° and 54°. The average high for October is 59° 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.