S
M
T
W
T
F
S
31
89°
74°
1
88°
80°
2
89°
80°
3
85°
78°
4
88°
78°
5
84°
74°
6
90°
79°
7
88°
82°
8
88°
82°
9
89°
81°
10
90°
82°
11
90°
82°
12
90°
82°
13
89°
81°
14
89°
79°
15
88°
78°
16
83°
75°
17
91°
78°
18
92°
83°
19
91°
82°
20
85°
74°
21
87°
81°
22
90°
82°
23
90°
81°
24
89°
81°
25
90°
79°
26
90°
81°
27
91°
78°
28
90°
81°
29
90°
81°
30
91°
80°
1
90°
79°
2
90°
80°
3
92°
81°
4
91°
80°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Mustang Island State Park
Mustang Island State Park's June 2026 forecast shows daily high temperatures ranging from 90° to 92°, with overnight lows between 79° and 81°. The average high for June is 91° with an average low of 80°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Mustang Island State Park. See also: July | August | September.