S
M
T
W
T
F
S
31
52°
40°
1
55°
41°
2
54°
41°
3
58°
43°
4
60°
42°
5
60°
41°
6
59°
41°
7
61°
42°
8
61°
43°
9
60°
42°
10
60°
43°
11
59°
43°
12
61°
42°
13
60°
44°
14
59°
43°
15
60°
43°
16
61°
42°
17
60°
44°
18
62°
47°
19
63°
46°
20
63°
46°
21
62°
44°
22
62°
46°
23
63°
46°
24
58°
45°
25
58°
47°
26
65°
48°
27
65°
48°
28
64°
47°
29
65°
47°
30
62°
45°
1
61°
47°
2
63°
47°
3
59°
49°
4
61°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in St. John's Bay
St. John's Bay's June 2026 forecast shows daily high temperatures ranging from 52° to 65°, with overnight lows between 40° and 49°. The average high for June is 60° with an average low of 44°. 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's Bay. See also: July | August | September.