S
M
T
W
T
F
S
28
88°
70°
29
90°
76°
30
92°
76°
1
91°
74°
2
92°
75°
3
92°
70°
4
85°
69°
5
83°
68°
6
84°
68°
7
86°
66°
8
88°
65°
9
89°
71°
10
86°
68°
11
82°
66°
12
87°
64°
13
88°
69°
14
90°
70°
15
87°
67°
16
89°
71°
17
91°
71°
18
87°
65°
19
84°
62°
20
86°
65°
21
85°
64°
22
82°
63°
23
84°
64°
24
89°
69°
25
88°
69°
26
89°
68°
27
89°
69°
28
87°
68°
29
87°
67°
30
84°
66°
31
80°
66°
1
81°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Mackinaw
Mackinaw's July 2026 forecast shows daily high temperatures ranging from 80° to 91°, with overnight lows between 62° and 71°. The average high for July is 86° with an average low of 67°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Mackinaw. See also: August | September | October.