S
M
T
W
T
F
S
30
86°
65°
31
86°
64°
1
80°
63°
2
82°
62°
3
85°
61°
4
86°
65°
5
86°
66°
6
85°
64°
7
84°
59°
8
79°
58°
9
80°
58°
10
81°
57°
11
82°
58°
12
83°
58°
13
82°
60°
14
83°
61°
15
82°
63°
16
83°
61°
17
78°
55°
18
76°
55°
19
74°
56°
20
74°
60°
21
75°
54°
22
74°
57°
23
74°
59°
24
73°
60°
25
76°
59°
26
79°
60°
27
79°
58°
28
77°
57°
29
75°
57°
30
73°
58°
1
72°
56°
2
73°
51°
3
71°
49°
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 86°, with overnight lows between 49° and 66°. The average high for September is 79° with an average low of 59°. 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.
