S
M
T
W
T
F
S
26
58°
30°
27
63°
32°
28
63°
42°
29
52°
38°
30
45°
34°
1
46°
32°
2
51°
28°
3
60°
27°
4
77°
34°
5
56°
35°
6
48°
31°
7
46°
27°
8
62°
27°
9
63°
40°
10
54°
35°
11
52°
29°
12
53°
25°
13
47°
40°
14
64°
39°
15
72°
34°
16
81°
48°
17
64°
46°
18
84°
66°
19
83°
38°
20
56°
31°
21
56°
36°
22
57°
45°
23
62°
45°
24
63°
47°
25
68°
48°
26
69°
47°
27
69°
49°
28
71°
48°
29
70°
49°
30
72°
48°
31
70°
45°
1
68°
50°
2
68°
51°
3
65°
50°
4
66°
47°
5
67°
50°
6
71°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lachine
Lachine's May 2026 forecast shows daily high temperatures ranging from 56° to 84°, with overnight lows between 31° and 66°. The average high for May is 68° with an average low of 47°. 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 Lachine. See also: June | July | August.
