S
M
T
W
T
F
S
31
65°
53°
1
66°
46°
2
69°
45°
3
66°
49°
4
74°
50°
5
76°
51°
6
75°
45°
7
70°
46°
8
72°
48°
9
73°
49°
10
71°
50°
11
69°
50°
12
69°
58°
13
77°
58°
14
74°
59°
15
80°
54°
16
73°
54°
17
78°
58°
18
78°
58°
19
75°
49°
20
72°
58°
21
79°
59°
22
78°
59°
23
79°
62°
24
80°
60°
25
81°
52°
26
76°
53°
27
74°
52°
28
79°
53°
29
79°
60°
30
77°
61°
1
72°
59°
2
78°
56°
3
82°
58°
4
82°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Montreal
Montreal's June 2026 forecast shows daily high temperatures ranging from 65° to 82°, with overnight lows between 45° and 62°. The average high for June is 75° with an average low of 54°. 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 Montreal. See also: July | August | September.