S
M
T
W
T
F
S
29
46°
27°
30
40°
20°
1
31°
14°
2
30°
15°
3
34°
26°
4
37°
26°
5
33°
25°
6
33°
20°
7
30°
18°
8
29°
21°
9
36°
22°
10
42°
25°
11
40°
25°
12
42°
24°
13
42°
25°
14
36°
22°
15
35°
22°
16
36°
20°
17
35°
14°
18
34°
12°
19
32°
7°
20
26°
7°
21
24°
19°
22
35°
20°
23
36°
12°
24
35°
7°
25
30°
20°
26
32°
21°
27
36°
20°
28
36°
19°
29
35°
16°
30
35°
13°
31
31°
4°
1
26°
4°
2
23°
15°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Clarkson
Clarkson's December 2026 forecast shows daily high temperatures ranging from 23° to 46°, with overnight lows between 4° and 27°. The average high for December is 34° with an average low of 18°. 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 Clarkson. See also: January | February | March.
