S
M
T
W
T
F
S
29
56°
21°
30
71°
41°
31
79°
58°
1
76°
51°
2
52°
42°
3
62°
41°
4
75°
46°
5
56°
43°
6
53°
36°
7
49°
25°
8
54°
24°
9
58°
33°
10
71°
47°
11
65°
35°
12
63°
44°
13
73°
54°
14
76°
54°
15
68°
46°
16
62°
42°
17
61°
44°
18
63°
45°
19
66°
40°
20
61°
38°
21
66°
43°
22
67°
45°
23
68°
45°
24
69°
43°
25
68°
38°
26
59°
39°
27
57°
36°
28
60°
37°
29
60°
36°
30
58°
35°
1
60°
39°
2
62°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Delaware
Delaware's April 2026 forecast shows daily high temperatures ranging from 49° to 76°, with overnight lows between 24° and 54°. The average high for April is 63° with an average low of 40°. 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 Delaware. See also: May | June | July.