S
M
T
W
T
F
S
26
63°
35°
27
70°
37°
28
69°
48°
29
58°
49°
30
49°
35°
1
48°
30°
2
43°
33°
3
51°
33°
4
60°
36°
5
64°
47°
6
51°
41°
7
47°
36°
8
50°
35°
9
64°
40°
10
52°
40°
11
51°
37°
12
52°
31°
13
50°
44°
14
55°
44°
15
65°
48°
16
70°
47°
17
63°
39°
18
67°
54°
19
75°
45°
20
61°
36°
21
62°
39°
22
62°
42°
23
64°
40°
24
63°
44°
25
66°
45°
26
67°
42°
27
63°
41°
28
62°
45°
29
64°
48°
30
62°
48°
31
67°
46°
1
62°
45°
2
61°
43°
3
63°
40°
4
64°
43°
5
64°
49°
6
68°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lac-Chapleau
Lac-Chapleau's May 2026 forecast shows daily high temperatures ranging from 50° to 75°, with overnight lows between 36° and 54°. 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 Lac-Chapleau. See also: June | July | August.
