S
M
T
W
T
F
S
30
74°
57°
31
73°
56°
1
73°
55°
2
72°
54°
3
71°
53°
4
69°
55°
5
66°
47°
6
65°
54°
7
64°
55°
8
70°
55°
9
72°
56°
10
63°
51°
11
62°
54°
12
64°
53°
13
65°
55°
14
71°
55°
15
72°
51°
16
64°
47°
17
63°
52°
18
67°
50°
19
70°
48°
20
Hist. Avg.
66°
50°
21
Hist. Avg.
66°
49°
22
Hist. Avg.
66°
49°
23
Hist. Avg.
66°
49°
24
Hist. Avg.
65°
49°
25
Hist. Avg.
65°
49°
26
Hist. Avg.
65°
49°
27
Hist. Avg.
65°
48°
28
Hist. Avg.
64°
48°
29
Hist. Avg.
64°
48°
30
Hist. Avg.
64°
48°
1
Hist. Avg.
64°
48°
2
Hist. Avg.
64°
48°
3
Hist. Avg.
63°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Deception Pass State Park
Deception Pass State Park's September 2026 forecast shows daily high temperatures ranging from 62° to 74°, with overnight lows between 47° and 57°. The average high for September is 68° with an average low of 53°. 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 Deception Pass State Park. See also: October | November | December.
