S
M
T
W
T
F
S
31
N/A
1
92°
66°
2
81°
65°
3
79°
66°
4
80°
65°
5
82°
66°
6
82°
65°
7
88°
66°
8
96°
65°
9
93°
67°
10
94°
67°
11
92°
64°
12
91°
64°
13
92°
66°
14
88°
63°
15
94°
62°
16
81°
59°
17
80°
59°
18
81°
60°
19
82°
60°
20
86°
68°
21
92°
69°
22
87°
66°
23
90°
69°
24
94°
70°
25
94°
70°
26
95°
69°
27
94°
70°
28
95°
71°
29
95°
71°
30
94°
70°
1
95°
71°
2
96°
72°
3
97°
72°
4
95°
71°
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 79° to 97°, with overnight lows between 59° and 72°. The average high for June is 90° with an average low of 67°. 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.
