S
M
T
W
T
F
S
26
41°
34°
27
49°
34°
28
53°
38°
29
42°
34°
30
40°
33°
1
45°
28°
2
43°
26°
3
67°
33°
4
54°
36°
5
43°
32°
6
44°
31°
7
52°
29°
8
46°
27°
9
53°
36°
10
52°
37°
11
41°
36°
12
46°
38°
13
50°
36°
14
53°
34°
15
70°
40°
16
69°
41°
17
48°
37°
18
46°
38°
19
55°
35°
20
44°
29°
21
47°
30°
22
56°
37°
23
50°
38°
24
50°
37°
25
62°
37°
26
63°
41°
27
64°
45°
28
55°
39°
29
67°
37°
30
65°
42°
31
53°
37°
1
61°
37°
2
57°
40°
3
63°
39°
4
55°
43°
5
66°
40°
6
64°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Grand Marais
Grand Marais's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 Marais. See also: June | July | August.
