S
M
T
W
T
F
S
26
72°
61°
27
79°
61°
28
79°
64°
29
70°
66°
30
66°
63°
31
75°
63°
1
82°
64°
2
82°
70°
3
81°
68°
4
82°
63°
5
82°
69°
6
83°
70°
7
84°
71°
8
84°
68°
9
83°
68°
10
84°
69°
11
83°
65°
12
80°
64°
13
79°
63°
14
78°
63°
15
76°
61°
16
77°
62°
17
78°
61°
18
77°
61°
19
74°
65°
20
73°
64°
21
72°
62°
22
72°
64°
23
76°
65°
24
77°
65°
25
76°
64°
26
72°
63°
27
71°
63°
28
71°
64°
29
73°
63°
30
76°
64°
31
75°
63°
1
76°
61°
2
69°
59°
3
69°
60°
4
70°
59°
5
69°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cape Cod Airport
Cape Cod Airport's August 2026 forecast shows daily high temperatures ranging from 69° to 84°, with overnight lows between 58° and 71°. The average high for August is 76° with an average low of 64°. 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 Cape Cod Airport. See also: September | October | November.