S
M
T
W
T
F
S
31
86°
80°
1
85°
79°
2
85°
80°
3
86°
79°
4
85°
80°
5
85°
80°
6
86°
79°
7
86°
81°
8
87°
80°
9
85°
80°
10
86°
81°
11
86°
81°
12
87°
80°
13
86°
80°
14
86°
81°
15
87°
81°
16
86°
80°
17
86°
79°
18
87°
80°
19
89°
80°
20
88°
79°
21
88°
79°
22
89°
78°
23
88°
79°
24
88°
79°
25
89°
78°
26
88°
77°
27
88°
78°
28
89°
79°
29
88°
78°
30
88°
78°
1
90°
79°
2
89°
78°
3
88°
79°
4
89°
78°
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 85° to 90°, with overnight lows between 77° and 81°. The average high for June is 87° 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.
