S
M
T
W
T
F
S
31
53°
33°
1
60°
34°
2
62°
40°
3
67°
40°
4
65°
45°
5
73°
40°
6
71°
51°
7
58°
43°
8
72°
42°
9
79°
46°
10
76°
50°
11
66°
53°
12
73°
54°
13
66°
52°
14
75°
52°
15
69°
53°
16
73°
50°
17
71°
52°
18
74°
50°
19
75°
50°
20
71°
53°
21
72°
54°
22
68°
52°
23
67°
51°
24
64°
49°
25
66°
51°
26
66°
53°
27
65°
53°
28
68°
52°
29
67°
51°
30
66°
51°
1
66°
52°
2
67°
54°
3
66°
53°
4
69°
54°
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 64° to 79°, with overnight lows between 42° and 54°. The average high for June is 70° with an average low of 51°. 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.
