S
M
T
W
T
F
S
26
64°
32°
27
71°
37°
28
71°
46°
29
69°
43°
30
53°
42°
1
52°
36°
2
47°
36°
3
47°
33°
4
63°
33°
5
77°
52°
6
52°
42°
7
51°
36°
8
48°
36°
9
59°
32°
10
62°
43°
11
51°
37°
12
51°
36°
13
48°
35°
14
52°
47°
15
63°
50°
16
72°
55°
17
65°
45°
18
76°
61°
19
77°
60°
20
72°
47°
21
60°
42°
22
64°
45°
23
61°
48°
24
68°
50°
25
70°
52°
26
68°
55°
27
72°
45°
28
63°
44°
29
64°
50°
30
64°
50°
31
68°
49°
1
64°
48°
2
63°
46°
3
64°
43°
4
64°
44°
5
66°
52°
6
68°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Dunkin
Dunkin's May 2026 forecast shows daily high temperatures ranging from 52° to 77°, with overnight lows between 42° and 61°. The average high for May is 66° with an average low of 49°. 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 Dunkin. See also: June | July | August.