S
M
T
W
T
F
S
29
58°
26°
30
71°
48°
31
80°
59°
1
84°
62°
2
64°
45°
3
79°
46°
4
84°
65°
5
77°
51°
6
59°
45°
7
58°
42°
8
46°
32°
9
54°
30°
10
71°
36°
11
68°
45°
12
62°
38°
13
82°
56°
14
87°
61°
15
90°
58°
16
81°
63°
17
73°
54°
18
65°
59°
19
67°
43°
20
60°
38°
21
59°
49°
22
72°
52°
23
65°
51°
24
69°
51°
25
67°
54°
26
68°
52°
27
64°
51°
28
65°
50°
29
64°
52°
30
65°
53°
1
65°
51°
2
66°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Cape Henlopen State Park
Cape Henlopen State Park's April 2026 forecast shows daily high temperatures ranging from 59° to 81°, with overnight lows between 38° and 63°. The average high for April is 67° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Cape Henlopen State Park. See also: May | June | July.