S
M
T
W
T
F
S
29
53°
37°
30
59°
38°
1
56°
39°
2
56°
40°
3
58°
39°
4
60°
42°
5
59°
37°
6
54°
37°
7
55°
39°
8
60°
40°
9
60°
40°
10
61°
39°
11
61°
38°
12
60°
39°
13
62°
40°
14
62°
39°
15
61°
39°
16
62°
40°
17
62°
40°
18
63°
39°
19
65°
40°
20
65°
41°
21
60°
33°
22
53°
32°
23
51°
34°
24
54°
41°
25
55°
40°
26
51°
38°
27
53°
33°
28
52°
32°
29
51°
34°
30
52°
36°
31
52°
34°
1
53°
38°
2
53°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Boulder City
Boulder City's December 2026 forecast shows daily high temperatures ranging from 51° to 65°, with overnight lows between 32° and 42°. The average high for December is 57° with an average low of 38°. 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 Boulder City. See also: January | February | March.
