S
M
T
W
T
F
S
31
82°
81°
1
83°
82°
2
83°
82°
3
82°
80°
4
82°
79°
5
83°
81°
6
84°
82°
7
83°
81°
8
83°
82°
9
83°
82°
10
84°
82°
11
85°
82°
12
84°
82°
13
84°
79°
14
84°
80°
15
84°
82°
16
84°
74°
17
86°
79°
18
84°
81°
19
84°
82°
20
83°
82°
21
83°
82°
22
84°
82°
23
84°
81°
24
83°
79°
25
83°
79°
26
87°
79°
27
82°
79°
28
86°
80°
29
83°
79°
30
83°
80°
1
87°
81°
2
84°
81°
3
84°
81°
4
85°
81°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Port Isabel
Port Isabel's June 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for June is ° with an average low of °. 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 Port Isabel. See also: July | August | September.