S
M
T
W
T
F
S
26
67°
31°
27
73°
35°
28
65°
32°
29
53°
36°
30
48°
43°
1
60°
33°
2
48°
30°
3
47°
40°
4
62°
32°
5
68°
41°
6
60°
50°
7
63°
41°
8
56°
33°
9
60°
30°
10
63°
49°
11
62°
39°
12
57°
32°
13
57°
33°
14
65°
47°
15
66°
52°
16
77°
46°
17
78°
52°
18
64°
46°
19
89°
46°
20
87°
59°
21
63°
45°
22
56°
56°
23
67°
41°
24
60°
45°
25
60°
46°
26
77°
51°
27
70°
48°
28
64°
47°
29
64°
45°
30
65°
47°
31
69°
49°
1
72°
50°
2
69°
51°
3
72°
52°
4
73°
49°
5
76°
52°
6
71°
52°
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 60° to 77°, with overnight lows between 41° and 52°. The average high for May is 69° 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 Plymouth. See also: June | July | August.
