S
M
T
W
T
F
S
31
88°
78°
1
88°
78°
2
88°
80°
3
87°
75°
4
85°
75°
5
87°
78°
6
87°
76°
7
88°
79°
8
88°
76°
9
86°
75°
10
86°
73°
11
88°
75°
12
89°
80°
13
91°
80°
14
90°
79°
15
89°
79°
16
89°
78°
17
89°
77°
18
89°
78°
19
88°
80°
20
90°
78°
21
90°
79°
22
90°
80°
23
89°
80°
24
90°
79°
25
91°
81°
26
91°
79°
27
90°
79°
28
89°
80°
29
90°
80°
30
89°
80°
1
90°
79°
2
89°
78°
3
89°
78°
4
91°
80°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in St John
St John's June 2026 forecast shows daily high temperatures ranging from 89° to 91°, with overnight lows between 78° and 81°. The average high for June is 90° with an average low of 79°. 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. See also: July | August | September.
