S
M
T
W
T
F
S
26
45°
33°
27
52°
35°
28
58°
40°
29
66°
41°
30
59°
35°
1
42°
34°
2
44°
34°
3
43°
35°
4
51°
35°
5
77°
39°
6
56°
38°
7
47°
38°
8
45°
37°
9
47°
42°
10
51°
41°
11
48°
39°
12
43°
39°
13
46°
41°
14
51°
40°
15
50°
44°
16
50°
42°
17
49°
40°
18
50°
44°
19
50°
41°
20
49°
34°
21
53°
38°
22
53°
35°
23
59°
39°
24
61°
42°
25
62°
41°
26
63°
41°
27
61°
35°
28
52°
36°
29
53°
38°
30
55°
40°
31
64°
44°
1
65°
44°
2
65°
42°
3
61°
44°
4
60°
42°
5
65°
46°
6
67°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Grande-Vallée
Grande-Vallée's May 2026 forecast shows daily high temperatures ranging from 43° to 67°, with overnight lows between 34° and 46°. The average high for May is 55° 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 Grande-Vallée. See also: June | July | August.
