S
M
T
W
T
F
S
29
78°
64°
30
80°
70°
31
82°
71°
1
83°
73°
2
83°
74°
3
83°
74°
4
84°
65°
5
66°
57°
6
73°
60°
7
75°
62°
8
78°
67°
9
81°
68°
10
79°
70°
11
82°
73°
12
82°
75°
13
84°
74°
14
83°
74°
15
83°
74°
16
84°
75°
17
84°
75°
18
82°
64°
19
73°
67°
20
76°
71°
21
82°
74°
22
85°
75°
23
85°
77°
24
85°
73°
25
84°
71°
26
83°
72°
27
82°
74°
28
82°
75°
29
85°
77°
30
94°
82°
1
88°
75°
2
87°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Mustang Island State Park
Mustang Island State Park's April 2026 forecast shows daily high temperatures ranging from 73° to 94°, with overnight lows between 64° and 82°. The average high for April is 84° with an average low of 74°. 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 Mustang Island State Park. See also: May | June | July.