S
M
T
W
T
F
S
29
45°
20°
30
69°
35°
31
50°
37°
1
54°
37°
2
40°
34°
3
49°
35°
4
54°
37°
5
47°
37°
6
48°
29°
7
37°
24°
8
43°
24°
9
48°
25°
10
48°
46°
11
53°
36°
12
48°
40°
13
59°
49°
14
58°
44°
15
56°
51°
16
64°
53°
17
65°
47°
18
58°
48°
19
56°
40°
20
49°
38°
21
53°
41°
22
56°
45°
23
55°
39°
24
54°
41°
25
57°
42°
26
52°
42°
27
52°
41°
28
53°
40°
29
52°
37°
30
55°
39°
1
54°
44°
2
62°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Long Island
Long Island's April 2026 forecast shows daily high temperatures ranging from 48° to 65°, with overnight lows between 36° and 53°. The average high for April is 55° with an average low of 43°. 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 Long Island. See also: May | June | July.
