S
M
T
W
T
F
S
30
89°
64°
31
89°
64°
1
88°
63°
2
88°
63°
3
87°
62°
4
85°
62°
5
87°
61°
6
87°
62°
7
86°
61°
8
82°
60°
9
82°
60°
10
81°
59°
11
85°
61°
12
86°
60°
13
84°
59°
14
82°
59°
15
81°
59°
16
85°
58°
17
87°
56°
18
78°
52°
19
74°
55°
20
76°
54°
21
81°
54°
22
83°
50°
23
75°
48°
24
73°
52°
25
73°
49°
26
74°
51°
27
77°
43°
28
71°
49°
29
75°
51°
30
80°
51°
1
78°
52°
2
79°
52°
3
80°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Clayton
Clayton's September 2026 forecast shows daily high temperatures ranging from 71° to 89°, with overnight lows between 43° and 64°. The average high for September 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 September weather will actually feel in Clayton. See also: October | November | December.
