S
M
T
W
T
F
S
29
63°
35°
30
72°
54°
31
76°
59°
1
60°
35°
2
78°
36°
3
78°
46°
4
81°
44°
5
49°
35°
6
54°
34°
7
36°
25°
8
61°
24°
9
73°
55°
10
61°
41°
11
49°
42°
12
74°
61°
13
71°
63°
14
76°
60°
15
71°
56°
16
67°
50°
17
70°
49°
18
59°
45°
19
64°
49°
20
63°
51°
21
67°
52°
22
63°
41°
23
55°
44°
24
55°
47°
25
67°
47°
26
57°
41°
27
55°
40°
28
59°
44°
29
61°
49°
30
66°
51°
1
69°
50°
2
63°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Oak Harbor
Oak Harbor's April 2026 forecast shows daily high temperatures ranging from 49° to 76°, with overnight lows between 40° and 63°. The average high for April is 64° with an average low of 49°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Oak Harbor. See also: May | June | July.