S
M
T
W
T
F
S
26
65°
44°
27
73°
50°
28
73°
54°
29
66°
53°
30
54°
41°
1
54°
37°
2
49°
39°
3
55°
40°
4
65°
45°
5
71°
49°
6
50°
42°
7
53°
43°
8
54°
43°
9
64°
41°
10
60°
47°
11
54°
44°
12
56°
42°
13
52°
46°
14
54°
46°
15
67°
50°
16
74°
53°
17
74°
58°
18
70°
49°
19
83°
68°
20
76°
49°
21
60°
42°
22
68°
43°
23
69°
51°
24
54°
51°
25
70°
57°
26
80°
61°
27
75°
52°
28
67°
53°
29
65°
52°
30
65°
52°
31
68°
51°
1
70°
55°
2
68°
55°
3
75°
60°
4
74°
58°
5
76°
60°
6
73°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Côte-Saint-Luc
Côte-Saint-Luc's May 2026 forecast shows daily high temperatures ranging from 54° to 80°, with overnight lows between 50° and 61°. The average high for May is 70° with an average low of 55°. 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 Côte-Saint-Luc. See also: June | July | August.