S
M
T
W
T
F
S
30
83°
48°
31
84°
49°
1
84°
48°
2
83°
46°
3
83°
45°
4
81°
42°
5
79°
39°
6
77°
40°
7
76°
45°
8
80°
47°
9
82°
46°
10
82°
40°
11
77°
45°
12
77°
44°
13
79°
46°
14
80°
46°
15
81°
45°
16
78°
43°
17
68°
40°
18
72°
42°
19
68°
35°
20
75°
44°
21
76°
39°
22
Hist. Avg.
71°
37°
23
Hist. Avg.
70°
36°
24
Hist. Avg.
70°
36°
25
Hist. Avg.
69°
36°
26
Hist. Avg.
69°
35°
27
Hist. Avg.
68°
35°
28
Hist. Avg.
68°
35°
29
Hist. Avg.
67°
34°
30
Hist. Avg.
67°
34°
1
Hist. Avg.
66°
34°
2
Hist. Avg.
66°
33°
3
Hist. Avg.
65°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Clayton
Clayton's September 2026 forecast shows daily high temperatures ranging from 68° to 84°, with overnight lows between 35° and 49°. The average high for September is 78° with an average low of 44°. 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.
