S
M
T
W
T
F
S
30
84°
67°
31
88°
72°
1
93°
73°
2
93°
74°
3
94°
74°
4
94°
73°
5
83°
66°
6
79°
62°
7
81°
58°
8
85°
62°
9
90°
72°
10
82°
63°
11
82°
69°
12
82°
66°
13
84°
60°
14
83°
65°
15
90°
66°
16
86°
68°
17
80°
62°
18
75°
58°
19
76°
52°
20
75°
53°
21
70°
51°
22
72°
55°
23
71°
52°
24
79°
56°
25
74°
56°
26
78°
55°
27
78°
56°
28
77°
56°
29
76°
55°
30
75°
55°
1
73°
52°
2
69°
54°
3
75°
55°
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 69° to 90°, with overnight lows between 51° and 69°. The average high for September is 78° with an average low of 58°. 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.
