S
M
T
W
T
F
S
26
64°
39°
27
63°
48°
28
57°
45°
29
63°
43°
30
70°
46°
1
68°
43°
2
62°
50°
3
59°
47°
4
59°
42°
5
54°
41°
6
55°
40°
7
55°
41°
8
56°
42°
9
57°
43°
10
58°
44°
11
58°
44°
12
58°
44°
13
59°
46°
14
58°
44°
15
60°
49°
16
56°
45°
17
57°
43°
18
58°
46°
19
57°
47°
20
57°
44°
21
58°
44°
22
57°
45°
23
58°
49°
24
59°
50°
25
59°
50°
26
60°
49°
27
59°
47°
28
59°
45°
29
60°
44°
30
59°
48°
31
63°
47°
1
61°
46°
2
62°
48°
3
64°
46°
4
61°
48°
5
61°
47°
6
65°
52°
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 54° to 65°, with overnight lows between 40° and 52°. The average high for May is 59° with an average low of 46°. 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.