S
M
T
W
T
F
S
29
53°
33°
30
53°
34°
1
52°
39°
2
56°
36°
3
55°
40°
4
58°
34°
5
56°
32°
6
52°
36°
7
55°
37°
8
59°
35°
9
59°
35°
10
58°
36°
11
59°
37°
12
60°
38°
13
60°
38°
14
59°
37°
15
59°
37°
16
58°
36°
17
59°
37°
18
59°
35°
19
58°
38°
20
58°
32°
21
51°
28°
22
49°
30°
23
47°
33°
24
49°
30°
25
48°
29°
26
47°
28°
27
49°
26°
28
48°
28°
29
50°
30°
30
50°
37°
31
52°
31°
1
54°
33°
2
52°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Copperopolis
Copperopolis's December 2026 forecast shows daily high temperatures ranging from 47° to 60°, with overnight lows between 26° and 40°. The average high for December is 54° with an average low of 34°. 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 Copperopolis. See also: January | February | March.
