S
M
T
W
T
F
S
26
65°
38°
27
72°
31°
28
70°
40°
29
68°
46°
30
55°
46°
1
59°
43°
2
55°
35°
3
53°
32°
4
70°
35°
5
80°
54°
6
66°
45°
7
56°
36°
8
54°
31°
9
53°
32°
10
66°
44°
11
58°
35°
12
60°
32°
13
58°
39°
14
52°
45°
15
55°
44°
16
72°
55°
17
76°
46°
18
77°
56°
19
83°
58°
20
74°
46°
21
62°
37°
22
59°
42°
23
61°
44°
24
64°
45°
25
67°
49°
26
66°
53°
27
70°
43°
28
60°
42°
29
61°
47°
30
61°
49°
31
66°
48°
1
62°
46°
2
62°
43°
3
61°
43°
4
62°
44°
5
63°
51°
6
65°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cummington
Cummington's May 2026 forecast shows daily high temperatures ranging from 52° to 83°, with overnight lows between 37° and 58°. The average high for May is 65° 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 Cummington. See also: June | July | August.