S
M
T
W
T
F
S
26
53°
33°
27
48°
37°
28
60°
37°
29
48°
31°
30
41°
32°
1
44°
30°
2
45°
30°
3
52°
34°
4
68°
36°
5
48°
35°
6
42°
34°
7
46°
36°
8
51°
39°
9
53°
37°
10
48°
38°
11
46°
37°
12
45°
38°
13
48°
41°
14
52°
43°
15
53°
42°
16
52°
43°
17
51°
44°
18
56°
45°
19
55°
40°
20
55°
42°
21
56°
43°
22
56°
42°
23
58°
43°
24
59°
43°
25
59°
44°
26
60°
46°
27
60°
45°
28
62°
47°
29
66°
51°
30
66°
52°
31
67°
51°
1
61°
49°
2
64°
52°
3
65°
52°
4
71°
53°
5
70°
53°
6
63°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mackinaw City
Mackinaw City's May 2026 forecast shows daily high temperatures ranging from 42° to 71°, with overnight lows between 34° and 53°. The average high for May is 57° with an average low of 44°. 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 City. See also: June | July | August.
