S
M
T
W
T
F
S
26
36°
19°
27
36°
23°
28
38°
26°
29
47°
24°
30
49°
25°
1
64°
31°
2
62°
37°
3
69°
31°
4
41°
29°
5
38°
24°
6
46°
24°
7
57°
22°
8
59°
31°
9
52°
24°
10
56°
23°
11
65°
33°
12
72°
40°
13
80°
39°
14
66°
46°
15
52°
30°
16
46°
33°
17
43°
34°
18
48°
32°
19
50°
34°
20
54°
37°
21
58°
39°
22
64°
43°
23
58°
40°
24
58°
41°
25
55°
41°
26
60°
43°
27
64°
39°
28
58°
44°
29
58°
40°
30
59°
38°
31
58°
37°
1
61°
45°
2
60°
46°
3
69°
46°
4
66°
42°
5
59°
46°
6
62°
44°
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 43° to 69°, with overnight lows between 30° and 46°. The average high for May is 58° with an average low of 40°. 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.