S
M
T
W
T
F
S
26
77°
64°
27
78°
64°
28
76°
61°
29
76°
55°
30
80°
62°
31
76°
68°
1
73°
65°
2
74°
61°
3
74°
60°
4
76°
64°
5
74°
61°
6
72°
62°
7
74°
64°
8
75°
63°
9
72°
61°
10
70°
62°
11
71°
61°
12
71°
62°
13
70°
60°
14
71°
62°
15
70°
58°
16
71°
63°
17
73°
64°
18
75°
63°
19
77°
63°
20
74°
62°
21
73°
64°
22
77°
64°
23
76°
63°
24
74°
63°
25
75°
62°
26
77°
64°
27
76°
63°
28
70°
62°
29
72°
63°
30
77°
64°
31
78°
62°
1
71°
61°
2
69°
61°
3
73°
62°
4
76°
62°
5
77°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mackinaw City
Mackinaw City's August 2026 forecast shows daily high temperatures ranging from 69° to 78°, with overnight lows between 58° and 65°. The average high for August is 74° with an average low of 62°. 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.
