S
M
T
W
T
F
S
30
62°
42°
1
64°
43°
2
66°
42°
3
64°
42°
4
64°
40°
5
70°
49°
6
72°
44°
7
73°
52°
8
75°
51°
9
75°
49°
10
82°
48°
11
80°
59°
12
72°
51°
13
61°
48°
14
60°
50°
15
68°
49°
16
74°
54°
17
68°
52°
18
70°
46°
19
62°
45°
20
66°
51°
21
62°
54°
22
67°
46°
23
63°
54°
24
63°
58°
25
62°
57°
26
60°
46°
27
56°
46°
28
62°
44°
29
67°
45°
30
72°
54°
31
63°
58°
1
62°
50°
2
65°
47°
3
63°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Los Osos
Los Osos's December 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for December is ° with an average low of °. 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 Los Osos. See also: January | February | March.
