S
M
T
W
T
F
S
26
73°
43°
27
71°
52°
28
64°
47°
29
55°
35°
30
55°
31°
1
54°
29°
2
61°
28°
3
74°
42°
4
81°
36°
5
58°
35°
6
53°
27°
7
63°
27°
8
72°
29°
9
68°
39°
10
66°
32°
11
64°
33°
12
79°
42°
13
68°
41°
14
74°
33°
15
84°
54°
16
85°
59°
17
65°
55°
18
79°
59°
19
69°
52°
20
65°
47°
21
58°
46°
22
63°
48°
23
74°
56°
24
79°
52°
25
86°
54°
26
88°
54°
27
88°
63°
28
81°
57°
29
82°
49°
30
78°
52°
31
81°
57°
1
78°
50°
2
83°
49°
3
84°
57°
4
82°
63°
5
81°
60°
6
82°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Plain
Plain's May 2026 forecast shows daily high temperatures ranging from 78° to 84°, with overnight lows between 49° and 63°. The average high for May is 81° 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 Plain. See also: June | July | August.
