S
M
T
W
T
F
S
26
40°
25°
27
51°
25°
28
61°
30°
29
70°
36°
30
69°
43°
1
64°
41°
2
69°
40°
3
65°
45°
4
64°
44°
5
68°
42°
6
71°
40°
7
72°
40°
8
62°
39°
9
68°
39°
10
66°
43°
11
65°
42°
12
67°
41°
13
71°
46°
14
58°
43°
15
47°
38°
16
54°
34°
17
62°
33°
18
67°
36°
19
56°
44°
20
64°
39°
21
70°
45°
22
71°
47°
23
58°
46°
24
62°
41°
25
59°
41°
26
69°
44°
27
74°
49°
28
80°
49°
29
71°
51°
30
64°
43°
31
66°
41°
1
68°
43°
2
69°
45°
3
71°
51°
4
72°
50°
5
62°
46°
6
59°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Grand Haven
Grand Haven's May 2026 forecast shows daily high temperatures ranging from 59° to 72°, with overnight lows between 41° and 51°. The average high for May is 67° with an average low of 46°. 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 Grand Haven. See also: June | July | August.
