S
M
T
W
T
F
S
26
60°
39°
27
69°
37°
28
66°
39°
29
64°
41°
30
54°
45°
1
61°
39°
2
57°
43°
3
54°
38°
4
70°
39°
5
77°
49°
6
64°
51°
7
60°
41°
8
57°
43°
9
61°
45°
10
69°
49°
11
58°
45°
12
62°
38°
13
65°
45°
14
63°
48°
15
64°
47°
16
76°
45°
17
86°
57°
18
86°
59°
19
90°
66°
20
87°
63°
21
63°
51°
22
66°
48°
23
53°
46°
24
56°
45°
25
74°
53°
26
78°
59°
27
85°
56°
28
75°
53°
29
75°
54°
30
62°
46°
31
70°
47°
1
69°
46°
2
71°
47°
3
74°
52°
4
72°
55°
5
82°
57°
6
81°
58°
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 62° to 85°, with overnight lows between 46° and 59°. The average high for May is 75° with an average low of 53°. 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.
