S
M
T
W
T
F
S
26
65°
57°
27
68°
58°
28
68°
55°
29
69°
49°
30
69°
49°
31
75°
51°
1
67°
55°
2
68°
54°
3
76°
48°
4
80°
52°
5
82°
52°
6
68°
56°
7
69°
58°
8
71°
54°
9
67°
58°
10
66°
58°
11
70°
57°
12
69°
59°
13
68°
58°
14
66°
57°
15
66°
59°
16
66°
58°
17
68°
56°
18
65°
58°
19
70°
58°
20
66°
56°
21
65°
56°
22
66°
57°
23
70°
59°
24
81°
51°
25
66°
59°
26
67°
59°
27
69°
57°
28
70°
55°
29
68°
53°
30
69°
51°
31
66°
57°
1
65°
58°
2
61°
55°
3
62°
50°
4
63°
51°
5
62°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cannon Beach
Cannon Beach's August 2026 forecast shows daily high temperatures ranging from 61° to 66°, with overnight lows between 50° and 58°. The average high for August is 63° 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 Cannon Beach. See also: September | October | November.