S
M
T
W
T
F
S
31
53°
32°
1
58°
39°
2
59°
38°
3
63°
41°
4
68°
45°
5
71°
49°
6
64°
49°
7
66°
43°
8
71°
44°
9
74°
45°
10
71°
47°
11
72°
48°
12
69°
49°
13
70°
48°
14
71°
43°
15
62°
45°
16
61°
47°
17
62°
51°
18
62°
49°
19
63°
48°
20
63°
48°
21
64°
46°
22
64°
47°
23
65°
48°
24
64°
52°
25
65°
53°
26
64°
52°
27
67°
53°
28
65°
52°
29
65°
51°
30
64°
50°
1
65°
48°
2
66°
53°
3
67°
54°
4
70°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Saint John
Saint John's June 2026 forecast shows daily high temperatures ranging from 58° to 74°, with overnight lows between 38° and 55°. The average high for June is 66° with an average low of 48°. 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 Saint John. See also: July | August | September.
