S
M
T
W
T
F
S
30
65°
51°
31
67°
54°
1
64°
54°
2
65°
51°
3
64°
50°
4
67°
54°
5
64°
51°
6
63°
48°
7
63°
48°
8
66°
50°
9
70°
55°
10
71°
55°
11
71°
54°
12
70°
56°
13
71°
56°
14
66°
46°
15
68°
46°
16
68°
52°
17
71°
54°
18
72°
49°
19
71°
54°
20
70°
49°
21
63°
53°
22
70°
53°
23
71°
49°
24
69°
51°
25
69°
54°
26
70°
55°
27
70°
53°
28
62°
50°
29
60°
47°
30
60°
51°
1
61°
49°
2
58°
44°
3
57°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in North Whidbey Island
North Whidbey Island's September 2026 forecast shows daily high temperatures ranging from 57° to 72°, with overnight lows between 44° and 56°. The average high for September is 66° 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 September weather will actually feel in North Whidbey Island. See also: October | November | December.
