S
M
T
W
T
F
S
26
65°
37°
27
72°
38°
28
74°
42°
29
61°
53°
30
53°
40°
1
53°
37°
2
51°
39°
3
56°
38°
4
66°
45°
5
72°
49°
6
49°
42°
7
53°
42°
8
54°
41°
9
64°
32°
10
60°
45°
11
54°
40°
12
57°
40°
13
50°
44°
14
56°
46°
15
66°
51°
16
74°
51°
17
73°
56°
18
71°
48°
19
82°
57°
20
76°
47°
21
60°
41°
22
68°
48°
23
70°
53°
24
58°
51°
25
67°
53°
26
79°
57°
27
73°
52°
28
69°
52°
29
72°
49°
30
67°
51°
31
76°
56°
1
75°
57°
2
74°
56°
3
73°
58°
4
74°
51°
5
75°
58°
6
75°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Montreal / Aéroparc Île Perrot
Montreal / Aéroparc Île Perrot's May 2026 forecast shows daily high temperatures ranging from 58° to 79°, with overnight lows between 48° and 58°. The average high for May is 72° 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 May weather will actually feel in Montreal / Aéroparc Île Perrot. See also: June | July | August.
