S
M
T
W
T
F
S
26
65°
39°
27
71°
33°
28
68°
36°
29
66°
39°
30
53°
43°
1
58°
39°
2
53°
36°
3
52°
31°
4
70°
50°
5
78°
56°
6
63°
45°
7
59°
37°
8
57°
38°
9
55°
44°
10
61°
45°
11
60°
41°
12
61°
42°
13
62°
45°
14
63°
47°
15
59°
46°
16
64°
47°
17
65°
45°
18
73°
50°
19
72°
49°
20
71°
50°
21
70°
49°
22
70°
46°
23
66°
42°
24
64°
44°
25
65°
44°
26
66°
48°
27
66°
44°
28
67°
45°
29
66°
44°
30
66°
45°
31
68°
53°
1
72°
51°
2
69°
46°
3
69°
51°
4
74°
54°
5
71°
52°
6
70°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Great Barrington Town
Great Barrington Town's May 2026 forecast shows daily high temperatures ranging from 55° to 78°, with overnight lows between 37° and 56°. The average high for May is 66° with an average low of 47°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Great Barrington Town. See also: June | July | August.