As of 04:59 PDT

Onyx, CA weather in December

64°

Onyx, Wednesday, 7 October, 04:59

Clear. Feels like 63°. High 93°, low 64°.

Pressure29.97 inHg

Wind2.4 mph N

Humidity45%

Visibility6.2 mi

Dew point43°

See detailed hourly forecast

In December, Onyx, CA averages a high of 54.9° and a low of 37.3°. About 2.4 inches of precipitation fall over the month (6 wet days). The record high is 79.3° (2021) and the record low -4° (1990). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	58.1°	39.6°	18%	79.3° (2021)	24.6° (2001)
2	58.5°	39.9°	17%	73.2° (2021)	25.9° (1982)
3	58.6°	40.1°	15%	71.8° (2021)	25.9° (1982)
4	57.9°	40.1°	18%	73.8° (1979)	29.7° (2001)
5	57.9°	39.7°	18%	73.6° (1979)	22.1° (1972)
6	57.6°	39.2°	20%	73.9° (1977)	17.1° (1972)
7	56.1°	39.4°	25%	72° (1979)	23.7° (1978)
8	56.7°	38.1°	13%	71.8° (1962)	13.8° (2013)
9	56.7°	37.9°	10%	73.2° (2017)	10.2° (1972)
10	57.2°	38.1°	13%	72.7° (2017)	15.1° (1972)
11	56.5°	38.7°	18%	72.7° (2017)	10.4° (1972)
12	55.4°	37.6°	25%	74.1° (2025)	13.1° (1972)
13	55°	36.7°	18%	73.2° (2025)	18.3° (1967)
14	54.5°	36.1°	18%	75.4° (2017)	16.3° (1967)
15	54.7°	36.3°	13%	71.6° (1980)	22.5° (1992)
16	55°	37.2°	17%	73.8° (1980)	21.6° (2015)
17	55°	37.2°	20%	72.1° (1998)	9.3° (1984)
18	54.1°	36.7°	20%	70.3° (2024)	19.4° (1984)
19	54.1°	36.5°	20%	72.1° (2024)	12.6° (1992)
20	53.8°	36.3°	22%	71.4° (2024)	13.5° (1978)
21	54°	35.8°	20%	71.1° (2025)	6.4° (1990)
22	52.5°	35.8°	25%	70.7° (2025)	-4° (1990)
23	53.2°	36.3°	20%	71.2° (2005)	9.1° (1990)
24	53.2°	36.9°	23%	69.4° (1989)	14° (1990)
25	53.2°	36.7°	22%	69.4° (2005)	12° (1987)
26	52.2°	36.9°	22%	74.3° (1980)	15.8° (1987)
27	52°	35.1°	18%	70° (1980)	11.8° (1988)
28	51.4°	34.7°	22%	74.1° (2017)	12.6° (2003)
29	52.3°	35.4°	27%	74.1° (1980)	15.3° (1990)
30	52.3°	35.1°	27%	71.1° (1980)	15.6° (1971)
31	52°	35.2°	23%	69.8° (2017)	12.2° (1987)