S
M
T
W
T
F
S
26
53°
40°
27
65°
44°
28
54°
36°
29
59°
34°
30
62°
41°
1
70°
34°
2
73°
32°
3
82°
50°
4
86°
42°
5
55°
43°
6
54°
42°
7
80°
38°
8
79°
51°
9
85°
44°
10
71°
50°
11
85°
48°
12
87°
51°
13
84°
43°
14
91°
60°
15
96°
54°
16
92°
61°
17
81°
48°
18
57°
38°
19
65°
48°
20
59°
44°
21
65°
47°
22
73°
51°
23
79°
55°
24
81°
55°
25
83°
53°
26
85°
58°
27
76°
54°
28
75°
54°
29
79°
58°
30
78°
52°
31
83°
58°
1
80°
57°
2
79°
57°
3
74°
52°
4
77°
58°
5
82°
59°
6
84°
59°
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 57° to 85°, with overnight lows between 38° and 59°. The average high for May is 76° with an average low of 53°. 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.