S
M
T
W
T
F
S
26
86°
68°
27
85°
71°
28
88°
73°
29
89°
74°
30
90°
73°
31
89°
70°
1
89°
73°
2
88°
73°
3
90°
72°
4
89°
72°
5
87°
73°
6
89°
74°
7
90°
72°
8
89°
71°
9
86°
68°
10
84°
70°
11
85°
67°
12
86°
69°
13
84°
68°
14
83°
66°
15
82°
67°
16
84°
66°
17
83°
67°
18
86°
68°
19
87°
69°
20
88°
67°
21
83°
71°
22
88°
72°
23
Hist. Avg.
85°
64°
24
Hist. Avg.
85°
64°
25
Hist. Avg.
84°
64°
26
Hist. Avg.
84°
64°
27
Hist. Avg.
84°
63°
28
Hist. Avg.
84°
63°
29
Hist. Avg.
84°
63°
30
Hist. Avg.
84°
63°
31
Hist. Avg.
83°
62°
1
Hist. Avg.
83°
62°
2
Hist. Avg.
83°
62°
3
Hist. Avg.
83°
62°
4
Hist. Avg.
82°
61°
5
Hist. Avg.
82°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Cape Henlopen State Park
Cape Henlopen State Park's August 2026 forecast shows daily high temperatures ranging from 82° to 90°, with overnight lows between 66° and 74°. The average high for August is 87° with an average low of 70°. 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 Henlopen State Park. See also: September | October | November.