S
M
T
W
T
F
S
27
68°
44°
28
65°
44°
29
59°
47°
30
61°
50°
1
64°
47°
2
62°
52°
3
64°
52°
4
66°
51°
5
64°
54°
6
66°
54°
7
67°
43°
8
66°
42°
9
64°
41°
10
54°
42°
11
55°
47°
12
58°
48°
13
61°
51°
14
62°
47°
15
64°
47°
16
64°
42°
17
60°
38°
18
57°
37°
19
52°
36°
20
49°
36°
21
48°
43°
22
52°
40°
23
57°
36°
24
54°
33°
25
47°
31°
26
45°
35°
27
46°
33°
28
50°
30°
29
47°
31°
30
43°
34°
31
57°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Mackinaw City
Mackinaw City's October 2026 forecast shows daily high temperatures ranging from 43° to 68°, with overnight lows between 30° and 54°. The average high for October is 58° 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 October weather will actually feel in Mackinaw City. See also: November | December | January.