S
M
T
W
T
F
S
30
85°
66°
31
82°
67°
1
81°
69°
2
82°
68°
3
82°
67°
4
84°
68°
5
87°
68°
6
88°
69°
7
88°
69°
8
87°
68°
9
87°
68°
10
86°
69°
11
87°
69°
12
87°
68°
13
86°
67°
14
85°
66°
15
85°
66°
16
83°
65°
17
83°
65°
18
84°
64°
19
83°
66°
20
84°
65°
21
80°
63°
22
83°
62°
23
84°
63°
24
83°
62°
25
76°
58°
26
77°
61°
27
83°
60°
28
83°
60°
29
84°
59°
30
83°
60°
1
82°
60°
2
79°
59°
3
81°
59°
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 76° to 88°, with overnight lows between 58° and 69°. The average high for September is 84° with an average low of 65°. 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.
