S
M
T
W
T
F
S
29
47°
37°
30
49°
37°
1
48°
36°
2
48°
36°
3
47°
35°
4
44°
35°
5
47°
34°
6
47°
35°
7
44°
32°
8
38°
31°
9
37°
32°
10
38°
33°
11
39°
33°
12
40°
32°
13
39°
33°
14
37°
27°
15
38°
26°
16
36°
27°
17
37°
30°
18
38°
31°
19
43°
29°
20
40°
23°
21
38°
26°
22
37°
28°
23
33°
25°
24
37°
25°
25
33°
23°
26
33°
15°
27
31°
12°
28
30°
11°
29
31°
10°
30
30°
24°
31
33°
25°
1
39°
18°
2
34°
19°
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 30° to 49°, with overnight lows between 10° and 37°. The average high for December is 39° with an average low of 28°. 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.
