S
M
T
W
T
F
S
29
64°
45°
30
62°
45°
1
62°
44°
2
63°
45°
3
64°
46°
4
64°
45°
5
65°
52°
6
63°
50°
7
64°
51°
8
62°
47°
9
66°
49°
10
66°
43°
11
Hist. Avg.
65°
46°
12
Hist. Avg.
65°
46°
13
Hist. Avg.
64°
46°
14
Hist. Avg.
64°
46°
15
Hist. Avg.
64°
46°
16
Hist. Avg.
64°
46°
17
Hist. Avg.
64°
46°
18
Hist. Avg.
64°
46°
19
Hist. Avg.
64°
46°
20
Hist. Avg.
64°
46°
21
Hist. Avg.
64°
46°
22
Hist. Avg.
64°
46°
23
Hist. Avg.
64°
46°
24
Hist. Avg.
64°
46°
25
Hist. Avg.
64°
46°
26
Hist. Avg.
64°
46°
27
Hist. Avg.
64°
46°
28
Hist. Avg.
64°
46°
29
Hist. Avg.
64°
46°
30
Hist. Avg.
64°
46°
31
Hist. Avg.
64°
46°
1
Hist. Avg.
64°
46°
2
Hist. Avg.
64°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Los Osos
Los Osos's December 2026 forecast shows daily high temperatures ranging from 62° to 66°, with overnight lows between 43° and 52°. The average high for December is 64° with an average low of 47°. 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.
