S
M
T
W
T
F
S
29
45°
20°
30
33°
16°
1
34°
16°
2
42°
25°
3
46°
24°
4
40°
24°
5
35°
23°
6
33°
12°
7
29°
8°
8
40°
24°
9
45°
23°
10
45°
22°
11
44°
23°
12
43°
22°
13
44°
23°
14
40°
21°
15
39°
21°
16
40°
14°
17
39°
11°
18
32°
5°
19
31°
6°
20
26°
21°
21
36°
17°
22
38°
12°
23
37°
16°
24
36°
15°
25
38°
21°
26
37°
20°
27
42°
7°
28
36°
6°
29
28°
13°
30
31°
5°
31
30°
8°
1
26°
18°
2
35°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Deadwood
Deadwood's December 2026 forecast shows daily high temperatures ranging from 26° to 46°, with overnight lows between 5° and 25°. The average high for December is 37° with an average low of 17°. 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 Deadwood. See also: January | February | March.
