S
M
T
W
T
F
S
29
58°
48°
30
58°
47°
1
59°
48°
2
56°
47°
3
56°
48°
4
60°
48°
5
60°
46°
6
59°
44°
7
58°
47°
8
60°
46°
9
55°
45°
10
53°
46°
11
54°
37°
12
54°
40°
13
53°
42°
14
59°
45°
15
61°
46°
16
60°
45°
17
60°
38°
18
55°
45°
19
52°
45°
20
58°
44°
21
58°
39°
22
57°
36°
23
51°
38°
24
52°
45°
25
53°
45°
26
53°
42°
27
52°
39°
28
51°
38°
29
50°
37°
30
50°
36°
31
51°
37°
1
50°
39°
2
52°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Larkspur
Larkspur's December 2026 forecast shows daily high temperatures ranging from 50° to 61°, with overnight lows between 36° and 48°. The average high for December is 55° with an average low of 43°. 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 Larkspur. See also: January | February | March.
