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
68°
45°
4
65°
47°
5
58°
48°
6
57°
49°
7
59°
47°
8
58°
46°
9
60°
50°
10
63°
50°
11
60°
48°
12
67°
43°
13
58°
50°
14
58°
48°
15
53°
46°
16
55°
48°
17
60°
50°
18
61°
49°
19
62°
47°
20
63°
49°
21
66°
50°
22
67°
51°
23
62°
50°
24
62°
49°
25
64°
49°
26
63°
50°
27
65°
53°
28
59°
52°
29
59°
50°
30
61°
49°
31
66°
53°
1
67°
54°
2
60°
52°
3
60°
49°
4
60°
49°
5
60°
50°
6
60°
50°
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 53° to 67°, with overnight lows between 46° and 54°. The average high for May is 61° with an average low of 50°. 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.
