S
M
T
W
T
F
S
31
52°
38°
1
51°
39°
2
51°
39°
3
52°
40°
4
52°
39°
5
51°
39°
6
52°
40°
7
54°
42°
8
58°
44°
9
57°
43°
10
55°
44°
11
57°
45°
12
56°
45°
13
57°
46°
14
61°
46°
15
56°
44°
16
57°
43°
17
60°
47°
18
63°
48°
19
64°
48°
20
60°
47°
21
59°
48°
22
59°
47°
23
60°
48°
24
61°
48°
25
60°
49°
26
62°
47°
27
63°
47°
28
64°
46°
29
63°
44°
30
62°
47°
1
63°
48°
2
63°
46°
3
64°
48°
4
65°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in St. John's
St. John's's June 2026 forecast shows daily high temperatures ranging from 51° to 65°, with overnight lows between 38° and 49°. The average high for June is 58° with an average low of 45°. 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. See also: July | August | September.
