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