S
M
T
W
T
F
S
26
43°
32°
27
53°
27°
28
50°
25°
29
43°
23°
30
40°
33°
1
46°
38°
2
56°
29°
3
48°
28°
4
53°
34°
5
70°
41°
6
69°
50°
7
55°
46°
8
52°
40°
9
59°
36°
10
61°
40°
11
53°
39°
12
40°
36°
13
54°
36°
14
64°
39°
15
44°
41°
16
67°
40°
17
73°
47°
18
N/A
19
52°
41°
20
71°
47°
21
55°
37°
22
52°
39°
23
54°
35°
24
59°
38°
25
57°
39°
26
54°
40°
27
58°
41°
28
58°
44°
29
58°
42°
30
56°
45°
31
57°
51°
1
55°
42°
2
54°
40°
3
55°
40°
4
56°
42°
5
56°
44°
6
57°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Westmount
Westmount's May 2026 forecast shows daily high temperatures ranging from 52° to 71°, with overnight lows between 35° and 51°. The average high for May is 57° with an average low of 42°. 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 Westmount. See also: June | July | August.
