S
M
T
W
T
F
S
26
62°
31°
27
68°
31°
28
71°
31°
29
56°
39°
30
45°
33°
1
42°
33°
2
45°
31°
3
46°
26°
4
58°
25°
5
59°
33°
6
59°
32°
7
52°
34°
8
52°
34°
9
60°
34°
10
56°
33°
11
47°
32°
12
49°
32°
13
59°
28°
14
52°
43°
15
62°
45°
16
70°
47°
17
56°
32°
18
57°
29°
19
58°
45°
20
59°
34°
21
49°
26°
22
61°
26°
23
66°
29°
24
72°
30°
25
60°
47°
26
69°
50°
27
60°
45°
28
58°
44°
29
53°
40°
30
66°
43°
31
67°
42°
1
72°
45°
2
71°
47°
3
75°
52°
4
75°
49°
5
74°
47°
6
69°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Dolbeau-Mistassini
Dolbeau-Mistassini's May 2026 forecast shows daily high temperatures ranging from 53° to 75°, with overnight lows between 40° and 52°. The average high for May is 67° with an average low of 46°. 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 Dolbeau-Mistassini. See also: June | July | August.