S
M
T
W
T
F
S
26
54°
37°
27
52°
37°
28
63°
37°
29
59°
36°
30
48°
39°
1
63°
32°
2
72°
39°
3
75°
54°
4
68°
38°
5
41°
26°
6
34°
28°
7
64°
43°
8
66°
46°
9
66°
42°
10
57°
42°
11
76°
47°
12
74°
48°
13
77°
51°
14
79°
54°
15
80°
51°
16
76°
50°
17
67°
44°
18
73°
46°
19
68°
39°
20
71°
42°
21
65°
38°
22
66°
44°
23
73°
46°
24
64°
42°
25
64°
39°
26
65°
41°
27
66°
45°
28
65°
44°
29
66°
48°
30
66°
46°
31
65°
45°
1
67°
44°
2
70°
45°
3
74°
45°
4
72°
46°
5
69°
47°
6
70°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Plainview
Plainview's May 2026 forecast shows daily high temperatures ranging from 34° to 80°, with overnight lows between 26° and 54°. The average high for May is 67° 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 Plainview. See also: June | July | August.