S
M
T
W
T
F
S
26
79°
75°
27
79°
75°
28
77°
77°
29
77°
75°
30
79°
75°
1
75°
61°
2
73°
59°
3
81°
57°
4
82°
52°
5
56°
46°
6
55°
40°
7
64°
48°
8
69°
49°
9
74°
55°
10
71°
49°
11
66°
51°
12
77°
56°
13
80°
59°
14
79°
56°
15
77°
57°
16
75°
56°
17
73°
60°
18
78°
60°
19
76°
53°
20
73°
57°
21
73°
52°
22
69°
52°
23
70°
53°
24
71°
54°
25
70°
54°
26
71°
55°
27
72°
56°
28
72°
59°
29
73°
60°
30
75°
64°
31
74°
59°
1
74°
56°
2
75°
58°
3
78°
65°
4
78°
66°
5
79°
66°
6
79°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Grandview
Grandview's May 2026 forecast shows daily high temperatures ranging from 55° to 82°, with overnight lows between 40° and 66°. The average high for May is 73° with an average low of 56°. 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 Grandview. See also: June | July | August.