S
M
T
W
T
F
S
26
54°
44°
27
74°
41°
28
67°
53°
29
54°
44°
30
56°
43°
1
48°
40°
2
49°
37°
3
64°
36°
4
73°
57°
5
63°
46°
6
56°
44°
7
54°
41°
8
62°
44°
9
62°
47°
10
64°
45°
11
61°
46°
12
62°
47°
13
64°
52°
14
63°
50°
15
63°
51°
16
68°
53°
17
70°
50°
18
70°
55°
19
69°
56°
20
71°
56°
21
71°
50°
22
66°
47°
23
65°
47°
24
66°
48°
25
66°
50°
26
67°
50°
27
67°
49°
28
68°
50°
29
69°
51°
30
68°
55°
31
74°
56°
1
69°
54°
2
72°
57°
3
75°
61°
4
77°
61°
5
76°
62°
6
80°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Oak Harbor
Oak Harbor's May 2026 forecast shows daily high temperatures ranging from 54° to 80°, with overnight lows between 41° and 63°. The average high for May is 67° with an average low of 52°. 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 Oak Harbor. See also: June | July | August.
