S
M
T
W
T
F
S
30
97°
69°
31
98°
68°
1
106°
67°
2
102°
67°
3
110°
70°
4
100°
71°
5
93°
72°
6
99°
71°
7
95°
69°
8
94°
72°
9
92°
73°
10
88°
71°
11
86°
72°
12
88°
70°
13
89°
69°
14
90°
69°
15
91°
68°
16
90°
67°
17
90°
67°
18
89°
66°
19
89°
65°
20
87°
66°
21
85°
63°
22
87°
66°
23
87°
66°
24
86°
65°
25
87°
66°
26
87°
66°
27
86°
65°
28
86°
66°
29
85°
66°
30
86°
65°
1
86°
65°
2
85°
63°
3
78°
60°
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 78° to 94°, with overnight lows between 60° and 73°. The average high for September is 87° with an average low of 67°. 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.
