S
M
T
W
T
F
S
26
69°
57°
27
67°
56°
28
68°
54°
29
68°
53°
30
69°
51°
31
67°
52°
1
66°
51°
2
64°
55°
3
67°
56°
4
70°
58°
5
69°
59°
6
71°
57°
7
70°
50°
8
69°
50°
9
69°
51°
10
68°
48°
11
62°
50°
12
62°
52°
13
67°
52°
14
69°
51°
15
69°
51°
16
70°
50°
17
69°
49°
18
68°
53°
19
67°
49°
20
67°
52°
21
64°
49°
22
62°
48°
23
63°
47°
24
62°
48°
25
63°
51°
26
60°
48°
27
61°
51°
28
61°
48°
29
62°
48°
30
63°
50°
31
64°
55°
1
67°
56°
2
69°
56°
3
71°
51°
4
71°
55°
5
69°
48°
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 60° to 71°, with overnight lows between 47° and 59°. The average high for August 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 August weather will actually feel in Cannon Beach. See also: September | October | November.