S
M
T
W
T
F
S
31
51°
40°
1
51°
39°
2
52°
40°
3
51°
41°
4
54°
38°
5
52°
38°
6
54°
42°
7
55°
38°
8
52°
37°
9
53°
43°
10
54°
40°
11
54°
38°
12
55°
43°
13
57°
45°
14
58°
45°
15
55°
44°
16
56°
44°
17
55°
42°
18
54°
41°
19
54°
41°
20
55°
42°
21
55°
43°
22
56°
43°
23
57°
44°
24
56°
44°
25
56°
45°
26
57°
43°
27
57°
46°
28
58°
48°
29
59°
47°
30
59°
48°
1
60°
47°
2
59°
48°
3
64°
49°
4
66°
49°
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 51° to 66°, with overnight lows between 37° and 49°. The average high for June is 56° with an average low of 43°. 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.
