S
M
T
W
T
F
S
30
67°
51°
31
65°
49°
1
67°
59°
2
69°
55°
3
66°
50°
4
63°
50°
5
64°
50°
6
72°
54°
7
70°
55°
8
69°
53°
9
70°
55°
10
68°
54°
11
70°
54°
12
70°
53°
13
69°
54°
14
71°
52°
15
71°
55°
16
65°
55°
17
65°
54°
18
66°
52°
19
64°
54°
20
64°
51°
21
65°
48°
22
64°
48°
23
63°
47°
24
63°
46°
25
64°
47°
26
67°
50°
27
70°
54°
28
64°
53°
29
62°
49°
30
69°
53°
1
66°
53°
2
63°
52°
3
64°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Anacortes
Anacortes's September 2026 forecast shows daily high temperatures ranging from 62° to 72°, with overnight lows between 46° and 59°. The average high for September 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 September weather will actually feel in Anacortes. See also: October | November | December.