S
M
T
W
T
F
S
26
60°
47°
27
64°
45°
28
71°
44°
29
61°
41°
30
64°
45°
1
68°
47°
2
62°
42°
3
67°
46°
4
71°
51°
5
73°
50°
6
73°
52°
7
74°
53°
8
75°
54°
9
74°
51°
10
65°
50°
11
64°
48°
12
66°
49°
13
74°
51°
14
66°
47°
15
69°
48°
16
74°
54°
17
75°
54°
18
72°
46°
19
73°
46°
20
69°
48°
21
70°
47°
22
69°
48°
23
70°
49°
24
68°
52°
25
70°
57°
26
77°
53°
27
78°
56°
28
72°
60°
29
82°
57°
30
83°
49°
31
73°
54°
1
74°
54°
2
78°
56°
3
82°
58°
4
82°
52°
5
83°
50°
6
74°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mackinaw
Mackinaw's May 2026 forecast shows daily high temperatures ranging from 60° to 83°, with overnight lows between 41° and 60°. The average high for May is 72° with an average low of 50°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Mackinaw. See also: June | July | August.
