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°
69°
10
84°
64°
11
83°
64°
12
87°
64°
13
89°
66°
14
88°
68°
15
89°
70°
16
89°
66°
17
87°
67°
18
90°
68°
19
87°
68°
20
86°
68°
21
85°
65°
22
84°
63°
23
81°
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 90°, with overnight lows between 63° and 70°. 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.