S
M
T
W
T
F
S
26
59°
36°
27
59°
47°
28
55°
43°
29
59°
39°
30
61°
40°
1
56°
45°
2
63°
46°
3
70°
48°
4
69°
50°
5
63°
47°
6
61°
49°
7
59°
48°
8
60°
51°
9
65°
50°
10
65°
49°
11
67°
51°
12
65°
51°
13
65°
49°
14
66°
50°
15
66°
51°
16
62°
48°
17
62°
49°
18
57°
48°
19
57°
46°
20
58°
45°
21
66°
52°
22
66°
52°
23
62°
50°
24
67°
53°
25
67°
51°
26
65°
52°
27
68°
54°
28
68°
54°
29
69°
53°
30
69°
54°
31
70°
55°
1
69°
54°
2
68°
53°
3
68°
54°
4
67°
52°
5
68°
53°
6
66°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Coupeville
Coupeville's May 2026 forecast shows daily high temperatures ranging from 57° to 70°, with overnight lows between 45° and 55°. The average high for May is 65° 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 Coupeville. See also: June | July | August.
