S
M
T
W
T
F
S
29
52°
20°
30
69°
29°
31
47°
34°
1
44°
30°
2
43°
27°
3
69°
38°
4
51°
36°
5
51°
36°
6
42°
28°
7
32°
22°
8
45°
17°
9
63°
22°
10
59°
40°
11
51°
29°
12
48°
24°
13
66°
41°
14
60°
44°
15
51°
45°
16
60°
49°
17
63°
42°
18
68°
48°
19
54°
28°
20
41°
27°
21
51°
39°
22
56°
39°
23
55°
38°
24
55°
42°
25
60°
43°
26
60°
44°
27
59°
43°
28
62°
41°
29
62°
45°
30
56°
44°
1
56°
42°
2
57°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Grand Isle State Park
Grand Isle State Park's April 2026 forecast shows daily high temperatures ranging from 41° to 68°, with overnight lows between 27° and 49°. The average high for April is 57° with an average low of 41°. 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 Grand Isle State Park. See also: May | June | July.
