S
M
T
W
T
F
S
26
66°
42°
27
74°
42°
28
75°
51°
29
63°
54°
30
54°
40°
1
55°
37°
2
50°
40°
3
56°
39°
4
66°
46°
5
70°
49°
6
49°
42°
7
54°
43°
8
55°
44°
9
66°
39°
10
61°
47°
11
56°
42°
12
57°
43°
13
51°
46°
14
55°
46°
15
67°
51°
16
74°
52°
17
75°
57°
18
71°
49°
19
83°
58°
20
76°
49°
21
61°
43°
22
68°
50°
23
71°
51°
24
54°
49°
25
68°
57°
26
74°
60°
27
73°
52°
28
68°
49°
29
70°
53°
30
68°
52°
31
72°
52°
1
74°
59°
2
75°
57°
3
72°
59°
4
75°
63°
5
76°
58°
6
76°
58°
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 54° to 76°, with overnight lows between 49° and 63°. The average high for May is 71° with an average low of 55°. 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.
