S
M
T
W
T
F
S
30
71°
56°
31
74°
58°
1
69°
53°
2
76°
58°
3
78°
57°
4
80°
52°
5
74°
48°
6
72°
48°
7
72°
56°
8
75°
55°
9
76°
46°
10
67°
45°
11
66°
45°
12
65°
46°
13
67°
50°
14
66°
43°
15
64°
41°
16
62°
42°
17
63°
40°
18
62°
41°
19
63°
42°
20
63°
42°
21
64°
45°
22
67°
50°
23
67°
42°
24
71°
50°
25
68°
48°
26
68°
39°
27
60°
46°
28
60°
48°
29
61°
45°
30
62°
44°
1
61°
41°
2
56°
38°
3
57°
46°
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 56° to 80°, with overnight lows between 38° and 58°. The average high for September is 67° with an average low of 47°. 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.
