S
M
T
W
T
F
S
26
68°
27°
27
71°
33°
28
67°
48°
29
72°
43°
30
78°
36°
1
83°
37°
2
85°
47°
3
87°
46°
4
88°
45°
5
85°
57°
6
84°
55°
7
79°
55°
8
77°
54°
9
78°
41°
10
80°
41°
11
79°
40°
12
85°
40°
13
68°
52°
14
69°
46°
15
65°
45°
16
64°
45°
17
69°
43°
18
74°
39°
19
76°
41°
20
76°
45°
21
79°
41°
22
84°
40°
23
87°
47°
24
88°
48°
25
85°
51°
26
63°
50°
27
80°
48°
28
90°
55°
29
74°
52°
30
75°
49°
31
77°
44°
1
85°
50°
2
87°
55°
3
83°
58°
4
79°
51°
5
79°
53°
6
72°
50°
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 72° to 87°, with overnight lows between 44° and 58°. The average high for May is 80° with an average low of 51°. 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.
