S
M
T
W
T
F
S
26
68°
57°
27
72°
55°
28
72°
54°
29
63°
52°
30
66°
53°
31
67°
52°
1
67°
57°
2
65°
52°
3
67°
51°
4
71°
53°
5
73°
55°
6
72°
56°
7
67°
55°
8
68°
55°
9
66°
54°
10
67°
53°
11
65°
54°
12
67°
54°
13
66°
53°
14
65°
54°
15
67°
53°
16
73°
56°
17
70°
58°
18
70°
57°
19
71°
56°
20
69°
55°
21
67°
57°
22
67°
54°
23
69°
57°
24
66°
51°
25
70°
57°
26
73°
57°
27
73°
56°
28
71°
57°
29
66°
56°
30
65°
51°
31
67°
54°
1
64°
54°
2
65°
51°
3
64°
50°
4
67°
54°
5
64°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in North Whidbey Island
North Whidbey Island's August 2026 forecast shows daily high temperatures ranging from 64° to 73°, with overnight lows between 50° and 58°. The average high for August is 68° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in North Whidbey Island. See also: September | October | November.