S
M
T
W
T
F
S
26
63°
41°
27
70°
35°
28
66°
35°
29
62°
44°
30
53°
44°
1
63°
41°
2
55°
44°
3
56°
33°
4
73°
38°
5
84°
51°
6
73°
52°
7
63°
41°
8
60°
39°
9
55°
50°
10
73°
48°
11
57°
42°
12
59°
39°
13
62°
43°
14
62°
44°
15
65°
49°
16
70°
51°
17
69°
47°
18
68°
49°
19
71°
50°
20
69°
47°
21
65°
44°
22
65°
44°
23
66°
46°
24
67°
50°
25
71°
52°
26
74°
52°
27
72°
48°
28
68°
46°
29
67°
46°
30
70°
49°
31
76°
54°
1
75°
54°
2
73°
52°
3
74°
54°
4
77°
55°
5
78°
56°
6
77°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Devens
Devens's May 2026 forecast shows daily high temperatures ranging from 55° to 78°, with overnight lows between 39° and 56°. The average high for May is 68° with an average low of 48°. 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 Devens. See also: June | July | August.