S
M
T
W
T
F
S
26
85°
67°
27
80°
65°
28
79°
61°
29
80°
65°
30
86°
68°
31
86°
67°
1
83°
66°
2
83°
65°
3
86°
59°
4
80°
60°
5
80°
63°
6
81°
60°
7
80°
59°
8
81°
57°
9
81°
58°
10
82°
64°
11
83°
61°
12
83°
61°
13
87°
58°
14
80°
58°
15
80°
60°
16
81°
59°
17
79°
59°
18
79°
58°
19
80°
57°
20
81°
58°
21
82°
63°
22
84°
65°
23
86°
66°
24
87°
65°
25
87°
62°
26
86°
59°
27
83°
63°
28
84°
62°
29
82°
56°
30
83°
55°
31
79°
53°
1
77°
56°
2
77°
56°
3
78°
57°
4
77°
54°
5
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mackinaw
Mackinaw's August 2026 forecast shows daily high temperatures ranging from 76° to 87°, with overnight lows between 53° and 68°. The average high for August is 82° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Mackinaw. See also: September | October | November.
