S
M
T
W
T
F
S
31
89°
76°
1
90°
76°
2
94°
70°
3
82°
73°
4
83°
68°
5
84°
65°
6
85°
67°
7
86°
65°
8
87°
64°
9
87°
71°
10
87°
71°
11
91°
72°
12
91°
72°
13
94°
72°
14
92°
73°
15
90°
76°
16
92°
77°
17
91°
75°
18
88°
77°
19
89°
75°
20
91°
76°
21
89°
74°
22
89°
74°
23
90°
75°
24
91°
76°
25
90°
75°
26
91°
76°
27
91°
76°
28
89°
75°
29
86°
76°
30
86°
76°
1
87°
75°
2
87°
76°
3
88°
76°
4
87°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Port St. John
Port St. John's June 2026 forecast shows daily high temperatures ranging from 86° to 94°, with overnight lows between 71° and 77°. The average high for June is 89° with an average low of 75°. 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 Port St. John. See also: July | August | September.
