S
M
T
W
T
F
S
30
82°
55°
31
82°
60°
1
81°
60°
2
80°
54°
3
80°
50°
4
74°
50°
5
73°
54°
6
74°
58°
7
80°
57°
8
78°
52°
9
74°
51°
10
73°
57°
11
74°
58°
12
80°
58°
13
80°
57°
14
79°
56°
15
80°
53°
16
77°
55°
17
71°
47°
18
74°
47°
19
69°
45°
20
68°
44°
21
67°
44°
22
68°
52°
23
68°
45°
24
70°
44°
25
68°
51°
26
71°
51°
27
69°
52°
28
75°
50°
29
74°
46°
30
72°
44°
1
67°
50°
2
72°
49°
3
65°
42°
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 65° to 82°, with overnight lows between 42° and 60°. The average high for September is 74° with an average low of 51°. 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.
