S
M
T
W
T
F
S
26
79°
66°
27
83°
57°
28
76°
53°
29
75°
59°
30
70°
52°
1
67°
48°
2
68°
48°
3
70°
53°
4
68°
54°
5
76°
55°
6
68°
59°
7
71°
55°
8
71°
51°
9
72°
52°
10
72°
53°
11
74°
62°
12
73°
62°
13
81°
58°
14
73°
54°
15
72°
53°
16
72°
53°
17
73°
54°
18
74°
59°
19
74°
61°
20
75°
56°
21
74°
55°
22
75°
56°
23
76°
62°
24
77°
63°
25
76°
61°
26
76°
61°
27
76°
63°
28
77°
65°
29
78°
65°
30
78°
63°
31
77°
62°
1
78°
63°
2
78°
62°
3
79°
62°
4
80°
64°
5
87°
66°
6
90°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Grand Rivers
Grand Rivers's May 2026 forecast shows daily high temperatures ranging from 67° to 90°, with overnight lows between 48° and 68°. The average high for May is 75° with an average low of 58°. 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 Rivers. See also: June | July | August.
