S
M
T
W
T
F
S
26
65°
28°
27
73°
32°
28
72°
38°
29
71°
43°
30
48°
41°
1
45°
28°
2
45°
27°
3
50°
28°
4
50°
27°
5
71°
34°
6
49°
40°
7
48°
31°
8
48°
31°
9
52°
39°
10
58°
34°
11
48°
34°
12
50°
31°
13
50°
35°
14
55°
37°
15
59°
42°
16
58°
38°
17
55°
40°
18
58°
40°
19
58°
37°
20
57°
38°
21
56°
36°
22
57°
34°
23
61°
36°
24
66°
41°
25
67°
43°
26
68°
44°
27
67°
36°
28
58°
36°
29
59°
37°
30
63°
41°
31
69°
46°
1
67°
45°
2
66°
40°
3
68°
46°
4
70°
47°
5
71°
48°
6
69°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lac-Mégantic
Lac-Mégantic's May 2026 forecast shows daily high temperatures ranging from 48° to 71°, with overnight lows between 31° and 48°. The average high for May is 60° with an average low of 39°. 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 Lac-Mégantic. See also: June | July | August.
