S
M
T
W
T
F
S
26
36°
19°
27
36°
23°
28
38°
26°
29
47°
24°
30
49°
25°
1
64°
31°
2
62°
37°
3
69°
31°
4
41°
29°
5
38°
24°
6
46°
24°
7
57°
22°
8
59°
31°
9
52°
24°
10
56°
23°
11
65°
33°
12
72°
40°
13
80°
39°
14
72°
50°
15
50°
31°
16
51°
29°
17
39°
33°
18
42°
28°
19
51°
32°
20
62°
41°
21
62°
41°
22
62°
43°
23
63°
43°
24
64°
45°
25
69°
48°
26
72°
48°
27
71°
51°
28
71°
49°
29
69°
50°
30
67°
42°
31
69°
47°
1
66°
48°
2
69°
48°
3
72°
47°
4
72°
48°
5
63°
44°
6
64°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St-Lazare
St-Lazare's May 2026 forecast shows daily high temperatures ranging from 39° to 72°, with overnight lows between 28° and 51°. The average high for May is 64° with an average low of 44°. 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 St-Lazare. See also: June | July | August.