Eureka, CA: December

31 December 2025: December 2025 averaged 49.5°F in Eureka, CA, the warmest December since 2024, tied 43rd warmest of 140 (with 1993, 1966 and 1941).

December 2025

Mean temperature: 49.5°F; Warmest since 2024; 43rd warmest of 140
Precipitation: 8.68 in; Wettest since 2024; 36th wettest of 140

A normal December in Eureka, CA (1991 to 2020): a mean temperature of 48.2°F, between 44.8°F and 50.6°F in eight years of ten and 7.21 in of precipitation, between 2.20 in and 12.91 in in eight years of ten.

The mean temperature of every December in Eureka, CA since 1886: 49.5°F in 2025; the highest is 53.7°F, in 1950.

Normal range, 44.8 to 50.6°F

Every year, ranked, as a table

Every December in Eureka, CA from 1886 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
2025	49.5	43	56.1	41	43	46	8.68	36
2024	50	33	57.7	15	42.3	59	9.88	24
2023	51.4	11	58.2	9	44.6	17	7.78	45
2022	46.1	115	53.5	95	38.6	123	8.54	38
2021	46.2	113	51.7	125	40.7	88	7.25	54
2020	47.4	89	55.8	46	38.9	116	3.96	113
2019	49.7	38	56.5	33	42.9	47	7.63	46
2018	48.5	62	56.4	34	40.6	89	4.95	93
2017	47.3	95	55.7	51	38.8	119	1.94	133
2016	44.9	129	53.1	107	36.8	136	7.87	43
2015	48.7	57	54.9	67	42.5	54	14.66	3
2014	52.8	2	59	3	46.6	3	9.75	27
2013	42.4	140	50.7	134	34.1	140	0.56	139
2012	46	117	52.6	117	39.4	110	10.97	15
2011	44.5	133	53.2	106	35.7	138	2.22	131
2010	49.6	40	55.8	46	43.4	42	10.08	22
2009	46.5	106	54.2	84	38.8	119	4.17	108
2008	45.2	127	51.5	129	38.8	119	6.66	65
2007	44.8	131	51.4	130	38.1	131	7.30	53
2006	48	78	55.9	44	40	101	7.09	58
2005	50.4	26	56.8	27	44	31	12.72	7
2004	48.4	66	55.2	61	41.6	75	9.43	30
2003	49.1	52	56.2	37	41.9	67	11.35	14
2002	50.6	22	57.5	16	43.7	36	23.31	1
2001	49.2	49	55.8	46	42.6	53	11.56	12
2000	48.4	66	56.9	24	39.9	104	1.97	132
1999	46	117	53.5	95	38.5	125	3.02	125
1998	44.6	132	52.3	121	36.9	135	5.40	86
1997	47.6	85	57	21	38.3	128	4.73	97
1996	50.8	20	57.4	19	44.3	22	21.26	2
1995	52	7	59	3	45	13	11.56	12
1994	46.7	101	53.6	94	39.7	106	7.00	62
1993	49.5	43	57	21	42	65	7.12	57
1992	46.9	99	53.4	102	40.3	98	9.33	32
1991	48.3	71	55.4	57	41.2	82	2.36	130
1990	42.8	139	50	137	35.5	139	2.91	126
1989	49.2	49	56.3	36	42.1	62	0.80	138
1988	47.7	81	54.4	80	41	84	6.26	73
1987	49.6	40	55.8	46	43.5	39	10.92	18
1986	51.3	12	59.1	2	43.5	39	3.83	115
1985	47.6	85	54.4	80	40.9	86	2.78	127
1984	46.8	100	54.2	84	39.4	110	4.27	106
1983	50.5	23	55.9	44	45.2	11	14.13	4
1982	49.6	40	57	21	42.2	61	10.30	20
1981	52.1	5	58	12	46.2	5	9.88	24
1980	51.2	13	58.3	8	44.1	29	6.10	75
1979	51.8	9	59.4	1	44.1	29	3.75	116
1978	43.3	137	50.4	135	36.1	137	1.16	137
1977	51	18	57.5	16	44.4	20	6.60	66
1976	47.4	89	55.6	53	39.2	113	0.52	140
1975	47.4	89	52.9	112	41.8	71	5.38	87
1974	48.7	57	54.6	73	42.7	49	6.40	71
1973	51.2	13	56.8	27	45.6	7	7.02	61
1972	45.7	120	51.6	128	39.8	105	7.42	51
1971	44.9	129	50.8	133	39.1	115	6.38	72
1970	47.4	89	52.9	112	41.9	67	10.24	21
1969	51.2	13	57.1	20	45.4	10	9.60	29
1968	46.5	106	53	109	40	101	8.32	41
1967	45.1	128	51.3	131	38.9	116	4.34	101
1966	49.5	43	55.2	61	43.8	34	6.52	68
1965	47	97	53.5	95	40.4	94	5.22	90
1964	48.5	62	53.3	103	43.7	36	10.96	17
1963	50.1	29	56.6	31	43.5	39	3.20	121
1962	49.7	38	55.6	53	43.7	36	2.58	128
1961	46.4	110	51.3	131	41.5	77	3.44	119
1960	48.8	56	55.1	63	42.4	57	5.08	92
1959	47.5	87	54.5	74	40.5	91	3.64	117
1958	52.4	4	58.1	11	46.7	2	4.06	110
1957	49.8	36	55.7	51	43.8	34	5.69	81
1956	46.2	113	52.6	117	39.7	106	7.18	55
1955	50.1	29	55.6	53	44.6	17	11.63	11
1954	48.2	72	54.5	74	41.8	71	9.65	28
1953	48.2	72	54.5	74	41.9	67	3.62	118
1952	48.2	72	53.3	103	43.1	45	11.87	10
1951	46.5	106	52.1	123	40.9	86	9.10	33
1950	53.7	1	59	3	48.4	1	5.99	76
1949	45.6	121	52.8	115	38.5	125	4.49	98
1948	44	136	49.8	139	38.3	128	7.35	52
1947	48.2	72	55.1	63	41.3	81	3.09	124
1946	48.7	57	55.4	57	42	65	1.56	135
1945	50.1	29	56.1	41	44.2	27	9.93	23
1944	50.5	23	56.9	24	44.2	27	5.92	79
1943	49.4	47	56.2	37	42.7	49	1.67	134
1942	49.9	34	54.8	69	44.9	14	8.52	39
1941	49.5	43	55	66	43.9	32	12.87	6
1940	50.5	23	56.8	27	44.3	22	8.87	35
1939	52.5	3	58.6	7	46.5	4	12.13	9
1938	48.7	57	54.9	67	42.5	54	5.97	77
1937	51.7	10	58.2	9	45.2	11	4.26	107
1936	47.4	89	53.8	90	41	84	3.97	112
1935	49.8	36	56.9	24	42.7	49	6.79	63
1934	49.1	52	56.2	37	42.1	62	5.28	88
1933	50.2	28	56.1	41	44.4	20	6.50	69
1932	44.2	134	50	137	38.4	127	5.54	82
1931	47.3	95	54	89	40.6	89	9.06	34
1930	48	78	55.5	56	40.4	94	2.50	129
1929	51	18	56.6	31	45.5	8	7.13	56
1928	48.1	76	55.8	46	40.4	94	7.82	44
1927	45.4	123	52.6	117	38.3	128	3.10	123
1926	47.7	81	54.2	84	41.1	83	6.47	70
1925	50.1	29	56.8	27	43.4	42	4.84	95
1924	45.5	122	51.7	125	39.3	112	4.07	109
1923	45.3	125	52.5	120	38.1	131	4.93	94
1922	47.7	81	53.5	95	41.8	71	7.62	47
1921	48.5	62	54.5	74	42.4	57	4.48	99
1920	48.4	66	54.1	87	42.7	49	10.83	19
1919	48.1	76	54.8	69	41.4	79	4.33	102
1918	46.3	111	53.7	92	38.9	116	4.29	104
1917	51.1	17	57.5	16	44.8	15	1.17	136
1916	43.2	138	49.1	140	37.4	134	5.47	84
1915	48.4	66	54.7	71	42.1	62	5.19	91
1914	45.3	125	52	124	38.6	123	7.09	58
1913	48.5	62	54.4	80	42.5	54	7.58	49
1912	46.6	105	52.8	115	40.5	91	5.83	80
1911	44.2	134	50.3	136	38.1	131	4.74	96
1910	49.2	49	54.5	74	43.9	32	3.43	120
1909	46.3	111	53.1	107	39.5	109	4.29	104
1908	47	97	53.5	95	40.5	91	3.91	114
1907	50.4	26	56.4	34	44.3	22	8.59	37
1906	49.4	47	54.5	74	44.3	22	7.59	48
1905	46.7	101	53	109	40.3	98	4.32	103
1904	49	54	54.7	71	43.2	44	8.18	42
1903	49	54	55.1	63	42.8	48	4.03	111
1902	49.9	34	55.4	57	44.3	22	8.33	40
1901	47.5	87	53.7	92	41.4	79	4.43	100
1900	50.8	20	56.2	37	45.5	8	5.27	89
1899	47.9	80	54.1	87	41.8	71	7.05	60
1898	46.1	115	53.5	95	38.7	122	3.17	122
1897	48.7	57	55.4	57	41.9	67	6.18	74
1896	51.2	13	57.8	14	44.6	17	9.41	31
1895	46.7	101	53.5	95	40	101	7.50	50
1894	46	117	52.3	121	39.6	108	12.31	8
1893	47.4	89	53.3	103	41.5	77	6.69	64
1892	46.5	106	52.9	112	40.2	100	6.55	67
1891	45.4	123	51.7	125	39.2	113	10.97	15
1890	48.4	66	54.4	80	42.3	59	5.48	83
1889	46.7	101	53	109	40.4	94	12.88	5
1888	52.1	5	58	12	46.2	5	5.93	78
1887	47.7	81	53.8	90	41.6	75	5.43	85
1886	51.9	8	59	3	44.8	15	9.78	26

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1950	53.7
2014	52.8
1939	52.5
1958	52.4
1981	52.1
1888	52.1
1995	52
1886	51.9
1979	51.8
1937	51.7

Coldest
Year	Mean, °F
2013	42.4
1990	42.8
1916	43.2
1978	43.3
1948	44
1932	44.2
1911	44.2
2011	44.5
1998	44.6
2007	44.8

Wettest
Year	Precipitation, in
2002	23.31
1996	21.26
2015	14.66
1983	14.13
1889	12.88
1941	12.87
2005	12.72
1894	12.31
1939	12.13
1952	11.87

Driest
Year	Precipitation, in
1976	0.52
2013	0.56
1989	0.80
1978	1.16
1917	1.17
1946	1.56
1943	1.67
2017	1.94
2000	1.97
2011	2.22

The hottest, coldest and wettest days

Hottest day: 61°F; 16 December 2025
Coldest night: 35°F; 29 December 2025, 28 December 2025
Wettest day: 2.72 in; 21 December 2025

Every month, season and year

Months

Seasons

Years

Eureka, CA the day's answers

All-time records

Every answer in words

December 2025 brought 8.68 in of precipitation in Eureka, CA, the wettest December since 2024, 36th wettest of 140.
The hottest day of December 2025 in Eureka, CA: 61°F on Tuesday 16 December 2025.
The coldest night of December 2025 in Eureka, CA: a low of 35°F on Monday 29 December 2025 and Sunday 28 December 2025.
The wettest day of December 2025 in Eureka, CA: 2.72 in on Sunday 21 December 2025.