S
M
T
W
T
F
S
29
54°
22°
30
47°
21°
1
55°
28°
2
54°
30°
3
53°
29°
4
56°
29°
5
55°
30°
6
55°
28°
7
51°
21°
8
48°
19°
9
50°
23°
10
47°
22°
11
53°
23°
12
52°
26°
13
44°
26°
14
49°
23°
15
45°
21°
16
53°
22°
17
Hist. Avg.
48°
21°
18
Hist. Avg.
48°
21°
19
Hist. Avg.
48°
21°
20
Hist. Avg.
48°
21°
21
Hist. Avg.
48°
21°
22
Hist. Avg.
48°
21°
23
Hist. Avg.
48°
21°
24
Hist. Avg.
48°
21°
25
Hist. Avg.
48°
21°
26
Hist. Avg.
48°
21°
27
Hist. Avg.
48°
21°
28
Hist. Avg.
48°
21°
29
Hist. Avg.
48°
21°
30
Hist. Avg.
48°
21°
31
Hist. Avg.
48°
21°
1
Hist. Avg.
48°
21°
2
Hist. Avg.
48°
21°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Clayton
Clayton's December 2026 forecast shows daily high temperatures ranging from 44° to 56°, with overnight lows between 19° and 30°. The average high for December is 51° with an average low of 25°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Clayton. See also: January | February | March.