S
M
T
W
T
F
S
26
41°
31°
27
45°
28°
28
45°
31°
29
44°
30°
30
52°
33°
1
53°
46°
2
48°
38°
3
54°
36°
4
49°
36°
5
71°
42°
6
74°
59°
7
60°
43°
8
47°
37°
9
57°
46°
10
57°
52°
11
57°
47°
12
51°
40°
13
53°
44°
14
55°
46°
15
56°
44°
16
50°
45°
17
54°
45°
18
53°
44°
19
54°
43°
20
51°
30°
21
56°
39°
22
56°
39°
23
57°
38°
24
58°
40°
25
57°
41°
26
57°
41°
27
58°
37°
28
56°
37°
29
57°
38°
30
58°
38°
31
59°
39°
1
66°
44°
2
67°
44°
3
62°
43°
4
61°
44°
5
62°
45°
6
68°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Grand Étang
Grand Étang's May 2026 forecast shows daily high temperatures ranging from 47° to 68°, with overnight lows between 30° and 52°. The average high for May is 57° with an average low of 42°. 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 Grand Étang. See also: June | July | August.