Lancaster, CA: December

31 December 2025: December 2025 averaged 50.1°F in Lancaster, CA, the warmest December since 1977 (1996 excluded: 31 of 31 days missing; 1999 excluded: 31 of 31 days missing), 3rd warmest of 75.

December 2025

Mean temperature: 50.1°F; Warmest since 1977; 3rd warmest of 75
Precipitation: 2.68 in; Wettest since 2019; 8th wettest of 77

A normal December in Lancaster, CA (1991 to 2020): a mean temperature of 43.5°F, between 41.8°F and 46.4°F in eight years of ten and 0.58 in of precipitation, between 0.09 in and 3.29 in in eight years of ten.

The mean temperature of every December in Lancaster, CA since 1945: 50.1°F in 2025; the highest is 50.4°F, in 1977.

Normal range, 41.8 to 46.4°F

Every year, ranked, as a table

Every December in Lancaster, CA from 1945 to 2025, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.

Year	Mean, °F	Rank	High, °F	Rank	Low, °F	Rank	Precipitation, in	Rank	Days missing
2025	50.1	3	64.4	5	35.8	6	2.68	8	0
2024	48.9	5	66.9	3	30.9	24	trace	64	0
2023	47.9	6	62.3	10	33.6	10	1.02	31	0
2022	45.6	16	57.8	37	33.5	11	1.13	29	0
2021	44.9	21	57.4	41	32.5	14	2.61	10	0
2020	43.1	41	60.7	17	25.5	64	0.37	47	0
2019	44	29	54.1	65	33.8	9	3.81	4	0
2018	45	19	57.5	39	32.5	14	1.58	20	0
2017	44.1	24	64.3	6	23.8	71	trace	64	0
2016	46.1	14	58.7	26	33.5	11	1.59	19	0
2015	42.4	49	56.3	53	28.5	42	0.37	47	0
2014	46.5	12	56.9	44	36	5	2.62	9	0
2013	42	56	58.6	28	25.5	64	0.09	58	0
2012	44.1	24	57.1	42	31.2	19	0.11	56	0
2011	40.5	67	58.4	33	22.5	74	0.36	49	0
2010	47.5	8	58.3	34	36.7	3	3.97	3	0
2009	42.2	54	55.9	59	28.4	45	0.88	33	0
2008	43.2	39	54.7	64	31.8	18	0.92	32	0
2007	42	56	55.1	61	28.9	39	0.09	58	0
2006	41.9	59	59.3	24	24.5	70	0.34	50	0
2005	46.4	13	61.7	13	31.1	22	0.19	53	0
2004	43.5	36	58.5	29	28.5	42	3.65	5	0
2003	43.9	31	57.9	36	29.9	33	0.57	41	0
2002	44.2	23	56.5	49	31.9	17	1.19	28	0
2001	42.9	43	55.6	60	30.1	31	0.63	37	0
2000	45	19	62.3	10	27.8	48	trace	64	0
1998	42	56	56.8	45	27.1	53	0.22	52	0
1997	41.7	61	54	66	29.5	35	2.25	12	0
1995	47.1	11	60	20	34.2	8	0.52	44	0
1994	43.4	38	56.4	52	30.4	30	0.57	41	0
1993	41.9	59	56.7	46	27.1	53	0.58	40	0
1992	39.7	70	50.7	76	28.7	41	3.13	7	0
1991	43.7	34	56	57	31.1	22	1.80	18	3
1990	36.6	75	52.3	73	20.8	75	0.07	61	0
1989	43.2	39	63.1	8	23.3	72	0.00	73	0
1988	42.8	44	56.1	56	29.5	35	1.57	21	0
1987	40.1	68	51.4	74	28.8	40	1.27	26	0
1986	42.6	45	58.3	34	26.9	56	0.55	43	0
1985	44.1	24	59.1	25	29.1	37	0.13	55	0
1984	36.8	74	46.4	77	27.1	53	5.35	1	0
1983	47.3	10	58.5	29	36.1	4	2.45	11	0
1982	42.6	45	54.8	63	30.5	28	0.62	38	0
1981	49.5	4	62	12	37	2	trace	64	0
1980	47.6	7	65.2	4	30.1	31	0.01	63	0
1979	44.1	24	61	16	27.3	52	0.08	60	0
1978	39.2	72	52.9	71	25.5	64	0.66	36	0
1977	50.4	1	62.4	9	38.4	1	4.04	2	0
1976	41.3	64	59.9	21	22.6	73	trace	64	0
1975	44	29	61.4	14	26.7	61	trace	64	0
1974	41.6	63	56.2	55	26.9	56	1.26	27	0
1971	38.6	73	51.2	75	26	63	3.24	6	0
1970	42.5	48	53.7	67	31.2	19	1.83	17	0
1969	45.1	18	60.7	17	29.6	34	trace	64	0
1968	39.3	71	53.3	70	25.3	69	0.15	54	0
1967	40.1	68	52.5	72	27.6	49	0.59	39	0
1966	42.3	51	56	57	28.5	42	0.73	35	0
1965	42.3	51	53.7	67	30.7	25	1.92	16	1
1964	45.9	15	58.5	29	33.3	13	0.07	61	0
1963	44.1	24	61.3	15	26.8	60	0.00	73	0
1962	45.4	17	63.4	7	27.4	50	0.00	73	0
1961	43.9	31	56.5	49	31.2	19	0.49	46	1
1960	43.6	35	60.4	19	26.9	56	trace	64	0
1959	43.9	31	58.7	26	29.1	37	1.07	30	0
1958			67.3	2			0.00	73	31
1957	43.1	41	57.8	37	28.4	45	1.40	24	0
1956	41.3	64	57	43	25.5	64	trace	64	0
1955	47.5	8	59.8	22	35.8	6	0.52	44	3
1954	42.4	49	57.5	39	27.4	50	0.34	50	0
1953	42.6	45	59.7	23	25.5	64	0.11	56	0
1952	43.5	36	56.3	53	30.6	26	1.53	22	0
1951	42.2	54	53.7	67	30.6	26	1.97	14	0
1950	50.2	2	68.1	1	32.2	16	0.00	73	1
1949	41.7	61	56.7	46	26.7	61	0.77	34	0
1948	40.9	66	54.9	62	26.9	56	1.38	25	0
1947			56.7	46			1.51	23	7
1946	44.5	22	58.5	29	30.5	28	1.94	15	0
1945	42.3	51	56.5	49	28.1	47	2.12	13	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1977	50.4
1950	50.2
2025	50.1
1981	49.5
2024	48.9
2023	47.9
1980	47.6
2010	47.5
1955	47.5
1983	47.3

Coldest
Year	Mean, °F
1990	36.6
1984	36.8
1971	38.6
1978	39.2
1968	39.3
1992	39.7
1987	40.1
1967	40.1
2011	40.5
1948	40.9

Wettest
Year	Precipitation, in
1984	5.35
1977	4.04
2010	3.97
2019	3.81
2004	3.65
1971	3.24
1992	3.13
2025	2.68
2014	2.62
2021	2.61

Driest
Year	Precipitation, in
1989	0.00
1963	0.00
1962	0.00
1958	0.00
1950	0.00
2024	trace
2017	trace
2000	trace
1981	trace
1976	trace
More years share the last value

The hottest, coldest and wettest days

Hottest day: 78°F; 19 December 2025
Coldest night: 26°F; 5 December 2025
Wettest day: 2.11 in; 24 December 2025

Every month, season and year

Months

Seasons

Years

Lancaster, CA the day's answers

All-time records

Every answer in words

December 2025 brought 2.68 in of precipitation in Lancaster, CA, the wettest December since 2019, 8th wettest of 77.
The hottest day of December 2025 in Lancaster, CA: 78°F on Friday 19 December 2025.
The coldest night of December 2025 in Lancaster, CA: a low of 26°F on Friday 5 December 2025.
The wettest day of December 2025 in Lancaster, CA: 2.11 in on Wednesday 24 December 2025.