S
M
T
W
T
F
S
31
77°
48°
1
72°
51°
2
79°
50°
3
83°
61°
4
85°
59°
5
86°
59°
6
85°
66°
7
86°
66°
8
73°
61°
9
75°
59°
10
77°
64°
11
95°
69°
12
96°
73°
13
85°
70°
14
74°
66°
15
76°
60°
16
70°
65°
17
69°
65°
18
77°
66°
19
75°
62°
20
78°
62°
21
76°
63°
22
74°
61°
23
76°
61°
24
76°
63°
25
77°
62°
26
75°
65°
27
79°
64°
28
75°
61°
29
75°
61°
30
74°
62°
1
75°
61°
2
77°
63°
3
77°
67°
4
78°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Harbor Isle
Harbor Isle's June 2026 forecast shows daily high temperatures ranging from 69° to 79°, with overnight lows between 60° and 67°. The average high for June is 75° with an average low of 63°. 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 Harbor Isle. See also: July | August | September.