S
M
T
W
T
F
S
29
44°
17°
30
61°
32°
31
48°
39°
1
56°
37°
2
43°
34°
3
51°
35°
4
53°
38°
5
47°
39°
6
49°
29°
7
43°
24°
8
47°
26°
9
50°
25°
10
54°
40°
11
56°
35°
12
57°
28°
13
57°
49°
14
63°
46°
15
58°
45°
16
52°
45°
17
66°
45°
18
57°
43°
19
54°
40°
20
48°
27°
21
45°
29°
22
56°
39°
23
56°
36°
24
57°
39°
25
58°
38°
26
57°
42°
27
53°
39°
28
56°
36°
29
56°
36°
30
57°
37°
1
56°
34°
2
54°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Westport Island
Westport Island's April 2026 forecast shows daily high temperatures ranging from 45° to 66°, with overnight lows between 27° and 49°. The average high for April is 56° with an average low of 39°. 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 Westport Island. See also: May | June | July.