S
M
T
W
T
F
S
26
64°
29°
27
64°
32°
28
66°
35°
29
54°
39°
30
61°
43°
1
47°
37°
2
52°
34°
3
43°
38°
4
56°
32°
5
71°
38°
6
55°
46°
7
54°
39°
8
51°
37°
9
57°
33°
10
55°
42°
11
55°
35°
12
46°
28°
13
59°
31°
14
63°
44°
15
N/A
16
74°
55°
17
63°
36°
18
66°
51°
19
67°
55°
20
74°
39°
21
56°
31°
22
57°
37°
23
62°
39°
24
63°
42°
25
65°
45°
26
61°
42°
27
66°
46°
28
65°
46°
29
64°
43°
30
66°
47°
31
68°
46°
1
62°
43°
2
63°
46°
3
63°
47°
4
64°
48°
5
63°
49°
6
64°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Saint-Leonard
Saint-Leonard's May 2026 forecast shows daily high temperatures ranging from 56° to 74°, with overnight lows between 31° and 55°. The average high for May is 64° with an average low of 45°. 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 Saint-Leonard. See also: June | July | August.