S
M
T
W
T
F
S
27
76°
43°
28
71°
49°
29
73°
43°
30
68°
60°
1
68°
52°
2
57°
41°
3
61°
33°
4
59°
45°
5
52°
33°
6
64°
32°
7
67°
48°
8
58°
39°
9
60°
39°
10
69°
58°
11
72°
55°
12
59°
48°
13
51°
46°
14
54°
45°
15
59°
47°
16
55°
41°
17
54°
44°
18
58°
44°
19
58°
47°
20
59°
47°
21
57°
45°
22
54°
44°
23
55°
37°
24
53°
44°
25
56°
43°
26
51°
38°
27
50°
39°
28
44°
38°
29
49°
41°
30
50°
41°
31
51°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Grand Marais
Grand Marais's October 2026 forecast shows daily high temperatures ranging from 44° to 72°, with overnight lows between 37° and 58°. The average high for October is 55° with an average low of 44°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Grand Marais. See also: November | December | January.