S
M
T
W
T
F
S
26
74°
61°
27
74°
57°
28
75°
56°
29
73°
58°
30
73°
57°
31
74°
57°
1
75°
59°
2
76°
57°
3
75°
62°
4
76°
61°
5
76°
59°
6
74°
60°
7
75°
59°
8
73°
61°
9
73°
60°
10
75°
58°
11
77°
60°
12
79°
64°
13
80°
62°
14
79°
60°
15
79°
57°
16
76°
56°
17
74°
55°
18
72°
56°
19
75°
62°
20
77°
63°
21
81°
64°
22
80°
62°
23
80°
58°
24
75°
57°
25
73°
58°
26
78°
53°
27
71°
54°
28
73°
60°
29
Hist. Avg.
74°
57°
30
Hist. Avg.
73°
57°
31
Hist. Avg.
73°
57°
1
Hist. Avg.
73°
56°
2
Hist. Avg.
73°
56°
3
Hist. Avg.
72°
56°
4
Hist. Avg.
72°
56°
5
Hist. Avg.
72°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Mackinaw City
Mackinaw City's August 2026 forecast shows daily high temperatures ranging from 71° to 81°, with overnight lows between 53° and 64°. The average high for August is 76° with an average low of 59°. 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 City. See also: September | October | November.
