S
M
T
W
T
F
S
26
60°
31°
27
66°
32°
28
68°
34°
29
69°
39°
30
69°
37°
1
70°
39°
2
71°
40°
3
70°
41°
4
71°
41°
5
70°
35°
6
59°
33°
7
59°
32°
8
60°
32°
9
62°
33°
10
67°
42°
11
63°
34°
12
70°
40°
13
74°
43°
14
74°
43°
15
64°
35°
16
67°
37°
17
72°
42°
18
72°
46°
19
75°
45°
20
71°
45°
21
72°
42°
22
67°
40°
23
65°
43°
24
71°
46°
25
71°
47°
26
72°
45°
27
78°
44°
28
71°
44°
29
66°
43°
30
72°
48°
31
75°
47°
1
69°
49°
2
78°
51°
3
80°
51°
4
77°
48°
5
79°
41°
6
69°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Plains
Plains's May 2026 forecast shows daily high temperatures ranging from 59° to 80°, with overnight lows between 31° and 51°. The average high for May is 70° with an average low of 41°. 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 Plains. See also: June | July | August.
