S
M
T
W
T
F
S
27
71°
49°
28
70°
51°
29
69°
50°
30
65°
58°
1
65°
54°
2
61°
48°
3
60°
41°
4
62°
50°
5
56°
38°
6
67°
37°
7
64°
52°
8
60°
45°
9
59°
48°
10
71°
60°
11
73°
59°
12
67°
48°
13
52°
45°
14
53°
48°
15
58°
51°
16
52°
46°
17
50°
45°
18
53°
47°
19
55°
47°
20
54°
48°
21
55°
46°
22
56°
39°
23
46°
41°
24
52°
45°
25
57°
45°
26
49°
39°
27
50°
38°
28
44°
38°
29
47°
43°
30
49°
42°
31
50°
37°
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 44° to 73°, with overnight lows between 37° and 60°. The average high for October is 54° with an average low of 45°. 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.