S
M
T
W
T
F
S
26
59°
34°
27
66°
35°
28
59°
35°
29
66°
44°
30
54°
41°
1
43°
33°
2
51°
34°
3
51°
35°
4
51°
30°
5
69°
41°
6
48°
39°
7
50°
36°
8
51°
38°
9
54°
40°
10
53°
42°
11
52°
35°
12
51°
38°
13
55°
41°
14
53°
40°
15
53°
42°
16
53°
40°
17
54°
41°
18
54°
42°
19
56°
28°
20
56°
38°
21
57°
37°
22
58°
35°
23
64°
38°
24
67°
41°
25
68°
43°
26
69°
44°
27
68°
36°
28
59°
35°
29
61°
39°
30
67°
42°
31
71°
46°
1
71°
44°
2
68°
40°
3
68°
45°
4
70°
46°
5
73°
47°
6
72°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cacouna
Cacouna's May 2026 forecast shows daily high temperatures ranging from 48° to 73°, with overnight lows between 28° and 47°. The average high for May is 60° with an average low of 40°. 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 Cacouna. See also: June | July | August.