Eureka, CA: January

31 January 2026: January 2026 averaged 48.8°F in Eureka, CA, the warmest January since 2024, tied 48th warmest of 140 (with 2020 and 1915).

January 2026

Mean temperature: 48.8°F; Warmest since 2024; 48th warmest of 140
Precipitation: 3.76 in; Driest since 2022; 30th driest of 140

A normal January in Eureka, CA (1991 to 2020): a mean temperature of 48.5°F, between 45°F and 51.5°F in eight years of ten and 6.52 in of precipitation, between 1.64 in and 12.06 in in eight years of ten.

The mean temperature of every January in Eureka, CA since 1887: 48.8°F in 2026; the highest is 54.2°F, in 1986.

Normal range, 45 to 51.5°F

Every year, ranked, as a table

Every January in Eureka, CA from 1887 to 2026, 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
2026	48.8	48	56.7	24	40.8	79	3.76	111
2025	46.6	92	54.6	66	38.6	117	3.82	108
2024	51.9	6	58.1	6	45.7	7	11.85	15
2023	47.7	68	55.4	47	39.9	93	7.89	46
2022	47.5	74	55.2	50	39.8	96	1.90	128
2021	48.3	57	55.6	43	40.9	78	7.10	62
2020	48.8	48	54.9	61	42.8	40	7.50	53
2019	49.5	36	57.1	19	41.8	55	6.67	65
2018	49.7	32	56.1	36	43.3	34	7.86	47
2017	45	115	52.6	95	37.5	128	10.51	22
2016	50.8	17	57.6	14	43.9	21	12.06	14
2015	51.1	14	59.2	4	43.1	36	1.36	137
2014	47.6	72	56	38	39.2	109	1.35	138
2013	44	127	51.5	113	36.5	134	2.57	122
2012	46.6	92	53.9	80	39.2	109	7.76	49
2011	48.4	53	55.8	41	41.1	70	2.23	125
2010	51.5	10	57.7	12	45.4	11	9.29	32
2009	46.7	89	55	57	38.5	118	1.58	136
2008	44.9	118	51.2	117	38.5	118	9.70	29
2007	42.9	135	50.1	126	35.7	138	1.86	132
2006	49.1	42	56.5	28	41.8	55	12.09	13
2005	47.6	72	55	57	40.2	87	5.91	75
2004	49.6	33	56.3	30	42.9	39	6.29	72
2003	53.9	2	60.1	2	47.8	1	5.51	80
2002	46.6	92	53.9	80	39.3	107	6.37	70
2001	46.9	84	56.3	30	37.5	128	3.79	110
2000	48.3	57	55.2	50	41.4	64	9.71	28
1999	47.4	76	54.6	66	40.1	90	4.37	93
1998	51.9	6	57.5	16	46.4	5	13.42	6
1997	48.5	52	55.9	39	41.1	70	8.81	36
1996	49.5	36	56.1	36	42.8	40	10.74	20
1995	52.4	4	58.1	6	46.7	3	12.74	9
1994	50.5	19	57.4	18	43.5	32	5.09	85
1993	46.4	101	52.8	93	39.9	93	7.15	60
1992	50.3	23	58	9	42.5	45	3.99	102
1991	47.7	68	54.8	64	40.7	81	1.65	134
1990	48.3	57	54.5	71	42.1	50	7.20	58
1989	46	106	52	107	39.9	93	4.71	88
1988	50.4	22	57	20	43.7	27	7.13	61
1987	49.1	42	56.9	23	41.3	66	6.48	68
1986	54.2	1	61.4	1	47.1	2	7.19	59
1985	48.4	53	56.2	33	40.5	85	0.66	140
1984	49.4	39	57	20	41.8	55	0.76	139
1983	51.3	12	58.7	5	43.9	21	8.48	39
1982	44.9	118	51.6	112	38.2	123	4.75	87
1981	52.5	3	59.6	3	45.4	11	7.67	50
1980	48.3	57	54.9	61	41.7	60	3.19	119
1979	46.6	92	53.9	80	39.3	107	3.82	108
1978	51.8	8	57.8	11	45.7	7	4.52	91
1977	47.4	76	55.1	54	39.7	99	1.90	128
1976	46.4	101	52.6	95	40.2	87	1.88	130
1975	45.8	108	51.8	110	39.8	96	5.20	84
1974	46.7	89	52.4	104	41	74	6.02	74
1973	47.3	80	53.3	87	41.2	67	6.47	69
1972	44.6	121	50.2	125	39	113	7.96	45
1971	45.7	109	50.8	119	40.6	82	5.41	81
1970	52	5	57.5	16	46.6	4	12.46	11
1969	44	127	49.7	132	38.3	121	13.92	4
1968	46.6	92	53.2	89	40	92	7.59	52
1967	47.3	80	53	90	41.7	60	8.87	33
1966	47.7	68	54.3	75	41.1	70	9.44	30
1965	47.2	82	52.6	95	41.9	52	5.82	77
1964	46.6	92	52.5	101	40.6	82	11.13	19
1963	46	106	52.3	105	39.7	99	1.70	133
1962	45.2	114	51.9	108	38.5	118	3.26	117
1961	50.5	19	57.7	12	43.3	34	4.54	90
1960	48.4	53	54.5	71	42.4	47	3.87	106
1959	50.1	25	55.6	43	44.5	16	7.23	56
1958	51.2	13	58	9	44.3	18	8.57	38
1957	43.2	133	49.4	133	37.1	132	4.22	99
1956	49.1	42	54.6	66	43.6	29	11.51	17
1955	44.2	126	50.1	126	38.3	121	5.73	78
1954	47	83	52.5	101	41.5	62	11.78	16
1953	51	15	55.9	39	46.1	6	12.63	10
1952	45	115	50.6	120	39.4	104	10.67	21
1951	46.9	84	52.6	95	41.2	67	8.47	40
1950	43.3	131	49.1	134	37.5	128	13.79	5
1949	40.3	140	47.6	139	33	140	1.63	135
1948	47.4	76	55	57	39.8	96	8.23	42
1947	44.6	121	51.4	115	37.8	125	3.93	104
1946	46.5	99	53.5	86	39.4	104	4.32	95
1945	48.9	47	55.3	48	42.4	47	3.64	113
1944	49.8	29	56.6	27	43.1	36	2.92	121
1943	46.9	84	54.2	77	39.7	99	5.23	83
1942	50.3	23	56.7	24	43.9	21	4.08	101
1941	51.5	10	57.6	14	45.5	10	11.37	18
1940	51.7	9	58.1	6	45.4	11	4.37	93
1939	46.5	99	52.6	95	40.4	86	4.49	92
1938	49.9	28	56.2	33	43.6	29	6.28	73
1937	40.4	139	46.6	140	34.3	139	4.27	97
1936	49.5	36	55.3	48	43.8	24	8.84	35
1935	47.7	68	54.6	66	40.8	79	7.25	55
1934	50.8	17	56.7	24	44.9	15	3.83	107
1933	43.5	130	49.9	130	37.2	131	7.04	63
1932	44.4	125	49.9	130	38.9	115	6.84	64
1931	49.8	29	57	20	42.5	45	4.09	100
1930	45.5	112	51.5	113	39.4	104	6.32	71
1929	45	115	51	118	39	113	4.31	96
1928	50	27	56.2	33	43.7	27	3.40	114
1927	49.8	29	55.8	41	43.8	24	5.83	76
1926	49.3	40	55.2	50	43.5	32	4.69	89
1925	48.2	61	53.8	84	42.7	43	3.97	103
1924	48	64	54.9	61	41.1	70	1.95	126
1923	46.9	84	52.6	95	41.2	67	3.88	105
1922	43.3	131	50	129	36.5	134	2.54	124
1921	45.7	109	51.7	111	39.6	102	8.37	41
1920	47.9	67	54.3	75	41.5	62	1.87	131
1919	49	45	55.2	50	42.8	40	7.84	48
1918	48.4	53	54.2	77	42.6	44	2.55	123
1917	42.5	137	49	135	36.1	137	5.53	79
1916	43	134	47.9	138	38.1	124	13.02	7
1915	48.8	48	55.6	43	41.9	52	9.75	26
1914	49.6	33	54.8	64	44.4	17	9.75	26
1913	42.7	136	48.5	136	36.9	133	8.10	44
1912	49.6	33	55	57	44.2	19	10.17	24
1911	45.3	113	50.4	121	40.2	87	8.63	37
1910	44.6	121	50.1	126	39.1	111	7.26	54
1909	49.2	41	54.5	71	44	20	14.41	3
1908	49	45	55.1	54	43	38	7.23	56
1907	46.4	101	51.9	108	41	74	10.40	23
1906	48.2	61	53.9	80	42.4	47	7.63	51
1905	51	15	56.4	29	45.6	9	4.81	86
1904	46.3	105	52.5	101	40.1	90	5.24	82
1903	48.6	51	53.6	85	43.6	29	16.07	2
1902	46.6	92	52.3	105	41	74	1.95	126
1901	47.4	76	52.9	92	41.9	52	9.93	25
1900	50.5	19	55.6	43	45.3	14	6.63	66
1899	47.5	74	53	90	42	51	6.50	67
1898	44	127	50.3	122	37.8	125	3.23	118
1897	48.1	63	54.4	74	41.8	55	3.04	120
1896	50.1	25	56.3	30	43.8	24	8.14	43
1895	46.4	101	53.3	87	39.5	103	9.37	31
1894	45.7	109	50.3	122	41	74	12.38	12
1893	44.7	120	50.3	122	39.1	111	3.65	112
1892	48	64	54.2	77	41.8	55	3.29	116
1891	48	64	54.6	66	41.4	64	3.33	115
1890	42.1	138	48	137	36.3	136	18.26	1
1889	46.9	84	55.1	54	38.7	116	4.25	98
1888	44.6	121	51.3	116	37.8	125	12.95	8
1887	46.7	89	52.8	93	40.6	82	8.86	34

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1986	54.2
2003	53.9
1981	52.5
1995	52.4
1970	52
2024	51.9
1998	51.9
1978	51.8
1940	51.7
2010	51.5
More years share the last value

Coldest
Year	Mean, °F
1949	40.3
1937	40.4
1890	42.1
1917	42.5
1913	42.7
2007	42.9
1916	43
1957	43.2
1950	43.3
1922	43.3

Wettest
Year	Precipitation, in
1890	18.26
1903	16.07
1909	14.41
1969	13.92
1950	13.79
1998	13.42
1916	13.02
1888	12.95
1995	12.74
1953	12.63

Driest
Year	Precipitation, in
1985	0.66
1984	0.76
2014	1.35
2015	1.36
2009	1.58
1949	1.63
1991	1.65
1963	1.70
2007	1.86
1920	1.87

The hottest, coldest and wettest days

Hottest day: 66°F; 15 January 2026
Coldest night: 32°F; 9 January 2026
Wettest day: 1.29 in; 3 January 2026

Every month, season and year

Months

Seasons

Years

Eureka, CA the day's answers

All-time records

Every answer in words

January 2026 brought 3.76 in of precipitation in Eureka, CA, the driest January since 2022, 30th driest of 140.
The hottest day of January 2026 in Eureka, CA: 66°F on Thursday 15 January 2026.
The coldest night of January 2026 in Eureka, CA: a low of 32°F on Friday 9 January 2026.
The wettest day of January 2026 in Eureka, CA: 1.29 in on Saturday 3 January 2026.