S
M
T
W
T
F
S
29
52°
23°
30
69°
39°
31
55°
38°
1
71°
39°
2
41°
36°
3
62°
37°
4
60°
38°
5
51°
38°
6
50°
31°
7
45°
28°
8
42°
27°
9
55°
30°
10
69°
35°
11
58°
40°
12
51°
43°
13
66°
54°
14
68°
54°
15
75°
54°
16
55°
50°
17
72°
47°
18
62°
46°
19
71°
46°
20
55°
32°
21
53°
35°
22
63°
45°
23
63°
46°
24
64°
41°
25
61°
35°
26
56°
38°
27
56°
39°
28
57°
38°
29
59°
37°
30
61°
36°
1
58°
34°
2
57°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Plum Island
Plum Island's April 2026 forecast shows daily high temperatures ranging from 51° to 75°, with overnight lows between 32° and 54°. The average high for April is 61° with an average low of 42°. 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 Plum Island. See also: May | June | July.
