S
M
T
W
T
F
S
29
56°
41°
30
61°
36°
1
60°
35°
2
59°
34°
3
59°
40°
4
61°
39°
5
60°
38°
6
52°
43°
7
56°
38°
8
63°
35°
9
57°
36°
10
50°
42°
11
58°
42°
12
59°
41°
13
63°
41°
14
62°
43°
15
57°
37°
16
64°
28°
17
60°
28°
18
53°
29°
19
54°
32°
20
51°
40°
21
52°
36°
22
59°
42°
23
59°
43°
24
60°
36°
25
58°
28°
26
57°
28°
27
49°
35°
28
56°
36°
29
59°
33°
30
54°
38°
31
56°
24°
1
65°
23°
2
63°
21°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Clemson
Clemson's December 2026 forecast shows daily high temperatures ranging from 49° to 65°, with overnight lows between 21° and 43°. The average high for December is 58° with an average low of 35°. 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 Clemson. See also: January | February | March.
