S
M
T
W
T
F
S
26
67°
39°
27
74°
41°
28
75°
48°
29
66°
53°
30
53°
39°
1
56°
36°
2
49°
38°
3
55°
36°
4
65°
43°
5
72°
49°
6
46°
43°
7
54°
37°
8
53°
40°
9
60°
46°
10
63°
45°
11
56°
39°
12
55°
38°
13
57°
44°
14
60°
43°
15
66°
48°
16
60°
43°
17
63°
45°
18
62°
46°
19
67°
44°
20
60°
41°
21
61°
42°
22
62°
41°
23
64°
42°
24
71°
47°
25
73°
50°
26
73°
51°
27
71°
44°
28
64°
43°
29
66°
44°
30
70°
52°
31
75°
53°
1
75°
51°
2
72°
49°
3
74°
53°
4
76°
54°
5
77°
55°
6
74°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mont-Saint-Hilaire
Mont-Saint-Hilaire's May 2026 forecast shows daily high temperatures ranging from 46° to 77°, with overnight lows between 37° and 55°. The average high for May is 65° with an average low of 46°. 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 Mont-Saint-Hilaire. See also: June | July | August.
