Alturas, CA: December

31 December 2025: December 2025 averaged 38.9°F in Alturas, CA, the warmest December since 1958 (1966 excluded: 7 of 31 days missing; 1973 excluded: 17 of 31 days missing; 1974 excluded: 11 of 31 days missing; 5 more years excluded for missing days), tied 2nd warmest of 79 (with 1958).

December 2025

Mean temperature: 38.9°F; Warmest since 1958; 2nd warmest of 79
Precipitation: 1.88 in; Wettest since 2022; 22nd wettest of 89

A normal December in Alturas, CA (1991 to 2020): a mean temperature of 30.8°F, between 26.1°F and 34.6°F in eight years of ten and 1.15 in of precipitation, between 0.43 in and 3.29 in in eight years of ten.

The mean temperature of every December in Alturas, CA since 1935: 38.9°F in 2025; the highest is 39°F, in 1950.

Normal range, 26.1 to 34.6°F

Every year, ranked, as a table

Every December in Alturas, CA from 1935 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	38.9	2	52.2	3	25.7	6	1.88	22	0
2024	35.4	10	46	20	24.9	11	1.67	31	2
2023	37.2	6	48.8	11	25.6	7	0.77	63	0
2022	27.1	67	36.9	77	17.4	50	2.68	15	0
2021	28.8	56	40.2	60	17.4	50	1.79	25	0
2020	30.8	44	44.5	35	17	52	0.84	61	0
2019	34.2	18	43.2	43	25.2	9	1.33	40	0
2018	32	35	42.2	51	21.7	26	1.16	45	0
2017	30.9	43	46.5	17	15.4	61	0.38	84	0
2016	27.3	64	38.5	68	16.2	58	1.75	28	0
2015	29	53	37.6	74	20.4	32	3.51	6	0
2014	37.3	5	45.1	29	29.5	1	2.13	19	0
2013	23.7	75	41.1	55	6.2	80	0.17	85	0
2012	28.1	61	38.1	70	18.1	44	2.68	15	0
2011	28.6	58	46.3	18	10.9	73	0.10	87	0
2010	34.8	14	42.7	47	26.9	2	2.84	13	0
2009	25.7	74	38.1	70	13.3	70	0.78	62	0
2008	26.2	72	39.5	63	12.8	72	1.45	37	0
2007	26.8	68	35.8	79	17.8	46	1.15	46	0
2006	30.5	47	41.9	52	19	39	0.63	71	0
2005	33.2	25	43.8	41	22.6	23	3.59	5	2
2004	31.7	37	44	39	19.3	36	0.69	67	0
2003	32.7	31	40.3	59	25.2	9	3.26	8	0
2002	34.5	16	44.6	33	24.4	12	1.02	52	2
2001	31.2	40	39	66	23.4	19	1.99	21	0
2000	32.1	34	45.5	25	18.8	40	0.43	79	0
1999	30.7	45	44.5	35	16.9	54	0.45	78	0
1998	26	73	37.2	75	14.8	62	0.72	65	0
1997	28.3	59	39.9	62	16.7	56	0.90	57	1
1996	34.3	17	43.1	45	25.5	8	3.12	9	1
1995	35.8	8	45.2	26	26.6	4	3.97	4	1
1994	26.5	71	38.5	68	14.7	64	2.31	18	1
1993	29.3	52	40.8	57	17.6	49	0.94	55	1
1992			35.8	79			1.75	28	4
1991			43.2	43			0.43	79	4
1990			34.4	83			0.55	73	5
1989	30.6	46	47.2	15	13.9	66	0.12	86	2
1988	28.3	59	41.9	52	13.7	69	0.85	60	3
1987	27.3	64	38.6	67	15.8	60	1.87	23	1
1986	31.6	38	45.7	23	17.7	48	0.64	70	3
1985	27.9	63	41.1	55	14.6	65	0.39	83	3
1984			40	61			0.46	77	4
1983	31.2	40	39.1	65	23.2	22	4.17	2	1
1982	29.8	49	40.5	58	19.2	38	1.44	38	3
1981	35.6	9	45.2	26	26	5	1.67	31	1
1980	33.3	22	48.4	14	18.2	42	1.11	48	0
1979			46.9	16	20.7	31	0.70	66	4
1978	23.3	76	37.8	73	8.8	74	0.67	68	1
1977	33.3	22	44.7	32	21.9	24	1.76	26	0
1976	28.9	54	51.1	4	6.8	78	0.02	89	0
1975	33.1	30	46	20	20.2	34	0.42	81	0
1974									11
1973							1.23	41	17
1972	22	77	35.5	81	8.1	76	1.03	51	1
1971	26.6	70	37.2	75	15.9	59	0.90	57	0
1970	26.8	68	36.7	78	16.8	55	3.33	7	0
1969	33.2	25	44.9	30	21.5	27	2.85	12	0
1968	28.8	56	39.4	64	17.9	45	0.98	53	1
1967	21.6	78	35.3	82	7.8	77	1.53	34	0
1966							1.48	35	7
1965	29.8	49	45.8	22	13.9	66	1.18	43	3
1964	33.2	25	42.6	48	23.8	16	4.15	3	0
1963	33.7	20	49.1	10	18.2	42	0.63	71	0
1962	37.8	4	52.3	2	23.5	18	0.88	59	1
1961	31.3	39	43.9	40	18.7	41	1.72	30	0
1960	35.3	11	51.1	4	19.9	35	0.51	74	1
1959	28.9	54	49.5	9	8.2	75	0.67	68	0
1958	38.9	2	54.5	1	23.3	21	1.09	49	1
1957	35	12	48.6	13	21.5	27	1.76	26	0
1956	31.9	36	50	8	13.8	68	1.36	39	1
1955	34.6	15	44.8	31	24.4	12			1
1954	30.1	48	43.3	42	17	52	1.15	46	0
1953							1.20	42	10
1952							2.63	17	5
1951	27.3	64	37.9	72	16.7	56	3.00	10	1
1950	39	1	51.1	4	26.9	2	0.91	56	0
1949	28	62	42.8	46	13.2	71	0.73	64	0
1948	20.1	79	33.8	84	6.5	79	2.06	20	0
1947	32.3	33	44.2	37	20.4	32	0.48	76	0
1946							1.08	50	5
1945	31.1	42	41.3	54	21	30	1.47	36	0
1944	34.1	19	46.3	18	21.9	24	0.41	82	0
1943	33.2	25	45.2	26	21.2	29	0.51	74	0
1942	33.2	25	42.4	49	24.1	14	1.85	24	0
1941	34.9	13	45.7	23	24	15	2.98	11	0
1940	33.6	21	42.4	49	23.4	19	2.73	14	3
1939	37	7	50.4	7	23.7	17	1.60	33	0
1938	33.3	22	48.8	11	17.8	46	0.07	88	0
1937							5.68	1	4
1936	29.7	51	44.2	37	14.8	62	0.96	54	2
1935	32.4	32	44.6	33	19.3	36	1.17	44	2

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1950	39
2025	38.9
1958	38.9
1962	37.8
2014	37.3
2023	37.2
1939	37
1995	35.8
1981	35.6
2024	35.4

Coldest
Year	Mean, °F
1948	20.1
1967	21.6
1972	22
1978	23.3
2013	23.7
2009	25.7
1998	26
2008	26.2
1994	26.5
1971	26.6

Wettest
Year	Precipitation, in
1937	5.68
1983	4.17
1964	4.15
1995	3.97
2005	3.59
2015	3.51
1970	3.33
2003	3.26
1996	3.12
1951	3.00

Driest
Year	Precipitation, in
1976	0.02
1938	0.07
2011	0.10
1989	0.12
2013	0.17
2017	0.38
1985	0.39
1944	0.41
1975	0.42
2000	0.43
More years share the last value

The hottest, coldest and wettest days

Hottest day: 65°F; 10 December 2025
Coldest night: 13°F; 12 December 2025
Wettest day: 0.72 in; 21 December 2025

Every month, season and year

Months

Seasons

Years

Alturas, CA the day's answers

All-time records

Every answer in words

December 2025 brought 1.88 in of precipitation in Alturas, CA, the wettest December since 2022, 22nd wettest of 89.
The hottest day of December 2025 in Alturas, CA: 65°F on Wednesday 10 December 2025.
The coldest night of December 2025 in Alturas, CA: a low of 13°F on Friday 12 December 2025.
The wettest day of December 2025 in Alturas, CA: 0.72 in on Sunday 21 December 2025.