S
M
T
W
T
F
S
26
54°
39°
27
61°
43°
28
52°
43°
29
50°
45°
30
57°
46°
1
61°
46°
2
59°
41°
3
54°
39°
4
63°
39°
5
64°
48°
6
68°
54°
7
61°
48°
8
59°
41°
9
63°
39°
10
70°
52°
11
57°
45°
12
59°
43°
13
63°
46°
14
61°
48°
15
57°
43°
16
70°
43°
17
79°
57°
18
68°
57°
19
73°
59°
20
73°
53°
21
62°
45°
22
60°
48°
23
59°
51°
24
62°
53°
25
68°
53°
26
66°
51°
27
69°
52°
28
68°
54°
29
69°
53°
30
69°
54°
31
70°
60°
1
64°
51°
2
62°
52°
3
63°
53°
4
63°
56°
5
64°
56°
6
69°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cotuit
Cotuit's May 2026 forecast shows daily high temperatures ranging from 59° to 73°, with overnight lows between 45° and 60°. The average high for May is 66° 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 Cotuit. See also: June | July | August.