S
M
T
W
T
F
S
26
57°
36°
27
58°
38°
28
54°
36°
29
56°
37°
30
55°
37°
1
56°
36°
2
55°
32°
3
56°
33°
4
59°
37°
5
61°
36°
6
60°
42°
7
62°
35°
8
59°
35°
9
60°
43°
10
61°
45°
11
68°
45°
12
62°
44°
13
67°
46°
14
71°
44°
15
62°
41°
16
63°
38°
17
65°
47°
18
73°
49°
19
72°
39°
20
64°
39°
21
62°
40°
22
64°
40°
23
65°
42°
24
69°
49°
25
74°
50°
26
71°
50°
27
68°
48°
28
67°
47°
29
68°
43°
30
67°
51°
31
68°
51°
1
76°
51°
2
71°
44°
3
70°
52°
4
76°
47°
5
77°
48°
6
76°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Plymouth
Plymouth's May 2026 forecast shows daily high temperatures ranging from 54° to 77°, with overnight lows between 32° and 52°. The average high for May is 65° with an average low of 43°. 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 Plymouth. See also: June | July | August.
