S
M
T
W
T
F
S
26
65°
47°
27
75°
49°
28
71°
55°
29
64°
46°
30
57°
42°
1
51°
32°
2
53°
33°
3
60°
48°
4
74°
57°
5
68°
48°
6
57°
41°
7
54°
39°
8
57°
44°
9
62°
48°
10
68°
49°
11
67°
51°
12
67°
51°
13
66°
50°
14
65°
51°
15
70°
54°
16
66°
51°
17
71°
57°
18
76°
58°
19
76°
58°
20
75°
59°
21
78°
59°
22
77°
58°
23
78°
57°
24
72°
52°
25
70°
54°
26
76°
60°
27
79°
58°
28
73°
59°
29
74°
56°
30
72°
55°
31
77°
58°
1
72°
54°
2
75°
61°
3
76°
55°
4
72°
53°
5
72°
53°
6
73°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Clayton
Clayton's May 2026 forecast shows daily high temperatures ranging from 51° to 79°, with overnight lows between 32° and 61°. The average high for May is 69° with an average low of 52°. 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 Clayton. See also: June | July | August.