S
M
T
W
T
F
S
29
67°
33°
30
59°
28°
1
57°
27°
2
57°
32°
3
56°
36°
4
58°
35°
5
65°
28°
6
57°
28°
7
58°
30°
8
62°
34°
9
54°
34°
10
56°
36°
11
58°
34°
12
61°
25°
13
62°
24°
14
55°
26°
15
51°
27°
16
52°
25°
17
52°
25°
18
50°
28°
19
52°
30°
20
53°
29°
21
53°
29°
22
54°
31°
23
54°
25°
24
53°
24°
25
52°
25°
26
50°
25°
27
50°
26°
28
51°
26°
29
52°
22°
30
52°
23°
31
53°
25°
1
52°
24°
2
53°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Carlsbad
Carlsbad's December 2026 forecast shows daily high temperatures ranging from 50° to 67°, with overnight lows between 22° and 36°. The average high for December is 55° 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 Carlsbad. See also: January | February | March.
