S
M
T
W
T
F
S
26
56°
38°
27
59°
37°
28
52°
36°
29
51°
44°
30
54°
45°
1
63°
40°
2
59°
38°
3
54°
34°
4
68°
35°
5
70°
49°
6
68°
56°
7
65°
48°
8
63°
36°
9
61°
35°
10
71°
52°
11
61°
39°
12
61°
39°
13
64°
42°
14
63°
47°
15
58°
43°
16
75°
40°
17
88°
56°
18
80°
57°
19
83°
62°
20
92°
61°
21
64°
50°
22
59°
46°
23
64°
44°
24
58°
49°
25
72°
56°
26
80°
51°
27
84°
56°
28
69°
54°
29
69°
47°
30
58°
42°
31
70°
47°
1
56°
34°
2
69°
44°
3
71°
48°
4
77°
53°
5
86°
63°
6
85°
61°
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 56° to 86°, with overnight lows between 34° and 63°. The average high for May is 73° with an average low of 50°. 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.
