S
M
T
W
T
F
S
31
51°
40°
1
51°
39°
2
52°
39°
3
50°
40°
4
51°
39°
5
51°
39°
6
52°
40°
7
53°
43°
8
54°
43°
9
53°
44°
10
55°
42°
11
54°
42°
12
53°
44°
13
54°
43°
14
57°
44°
15
55°
44°
16
54°
45°
17
57°
46°
18
59°
47°
19
60°
46°
20
57°
42°
21
54°
42°
22
55°
43°
23
56°
46°
24
59°
47°
25
58°
47°
26
60°
49°
27
62°
49°
28
62°
47°
29
60°
48°
30
65°
51°
1
68°
50°
2
63°
50°
3
65°
50°
4
66°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in St. John Island
St. John Island's June 2026 forecast shows daily high temperatures ranging from 50° to 68°, with overnight lows between 39° and 51°. The average high for June is 57° with an average low of 45°. 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 St. John Island. See also: July | August | September.
