S
M
T
W
T
F
S
31
63°
49°
1
65°
49°
2
67°
50°
3
68°
51°
4
65°
50°
5
63°
46°
6
66°
47°
7
67°
45°
8
66°
44°
9
65°
45°
10
68°
42°
11
65°
44°
12
64°
48°
13
67°
51°
14
71°
50°
15
71°
49°
16
70°
46°
17
65°
45°
18
65°
45°
19
70°
49°
20
71°
48°
21
72°
48°
22
68°
47°
23
66°
49°
24
68°
49°
25
69°
50°
26
75°
46°
27
70°
46°
28
65°
50°
29
71°
46°
30
72°
49°
1
68°
50°
2
71°
49°
3
68°
51°
4
72°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Grand Marais
Grand Marais's June 2026 forecast shows daily high temperatures ranging from 63° to 75°, with overnight lows between 42° and 51°. The average high for June is 68° with an average low of 48°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Grand Marais. See also: July | August | September.