Eureka, CA: October

9 October 2026: October 2026 so far averaged 55°F in Eureka, CA, the coldest 1 to 9 October since 2021, 57th coldest of 140.

October 2026 so far, to 9 October 2026

Mean temperature: 55°F; Coldest since 2021; 57th coldest of 140
Precipitation: 0.04 in; Driest since 2025; 46th driest of 140

A normal 1 to 9 October in Eureka, CA (1991 to 2020): a mean temperature of 56°F, between 53.2°F and 58.3°F in eight years of ten and 0.06 in of precipitation, between 0.00 in and 0.95 in in eight years of ten.

The mean temperature of every 1 to 9 October in Eureka, CA since 1887: 55°F in 2026; the lowest is 51.2°F, in 1921.

Normal range, 53.2 to 58.3°F

Every year, ranked, as a table

Every 1 to 9 October 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	55	84	59.6	107	50.4	39	0.04	92
2025	58.4	7	66.6	4	50.3	41	0.04	92
2024	55.7	65	63.9	26	47.4	108	0.03	96
2023	57.2	27	65.1	13	49.3	68	0.58	42
2022	56.8	33	60.3	89	53.3	3	0.04	92
2021	53.8	101	60.1	93	47.6	104	0.06	87
2020	56.3	45	60	95	52.6	9	0.02	99
2019	53.1	120	62.2	51	44	137	0.00	125
2018	55.8	62	62.2	51	49.3	68	0.33	60
2017	53.1	120	63.7	33	42.6	140	0.00	125
2016	56.8	33	63.6	35	50.1	46	0.48	48
2015	58.3	9	66.6	4	50.1	46	0.01	105
2014	58.8	4	67	1	50.6	33	0.00	125
2013	54.8	86	65	14	44.6	134	0.00	125
2012	55.5	70	62.8	46	48.2	96	0.00	125
2011	56.1	53	62.6	49	49.6	61	3.13	3
2010	57.3	23	63.8	29	50.9	29	0.01	105
2009	52	130	60.4	84	43.6	139	trace	114
2008	58.8	4	65.2	11	52.4	10	0.89	29
2007	53.2	116	61.2	72	45.2	132	1.43	19
2006	53.3	111	59.1	114	47.6	104	0.22	67
2005	53.4	106	60.2	91	46.6	121	0.52	45
2004	57.8	14	64.6	20	51	26	0.90	28
2003	55.3	76	60.4	84	50.2	42	0.27	62
2002	53.4	106	61.9	57	45	133	0.01	105
2001	57.5	20	65.2	11	49.8	55	0.01	105
2000	53.7	104	59.7	104	47.8	102	0.24	64
1999	54.5	92	60.8	79	48.2	96	0.27	62
1998	56.8	33	66.2	7	47.3	111	0.72	36
1997	58.1	12	64	24	52.1	14	1.52	15
1996	58.2	11	66.1	8	50.2	42	0.01	105
1995	55.3	76	64	24	46.7	118	0.01	105
1994	56.2	48	63.2	39	49.1	78	0.01	105
1993	54.2	95	58.4	124	50	51	0.10	79
1992	58.7	6	66.9	2	50.6	33	0.16	72
1991	57.5	20	64.6	20	50.4	39	0.00	125
1990	54.9	85	60.9	78	48.9	82	trace	114
1989	55.6	68	61.6	67	49.7	56	0.01	105
1988	56.5	41	60.2	91	52.8	7	0.36	59
1987	60	1	66.6	4	53.4	1	0.05	89
1986	55.7	65	63.1	41	48.3	92	0.01	105
1985	56.6	38	64.8	16	48.4	90	0.00	125
1984	59.6	2	66.9	2	52.3	12	0.52	45
1983	57.8	14	63.7	33	51.9	19	0.18	71
1982	56.1	53	64.7	18	47.4	108	0.47	49
1981	56.3	45	63.1	41	49.4	65	1.87	11
1980	56.2	48	61.9	57	50.6	33	trace	114
1979	58.3	9	63.3	38	53.3	3	0.07	86
1978	55.1	82	60.1	93	50.1	46	trace	114
1977	53.2	116	58.8	119	47.6	104	0.11	77
1976	56.3	45	62.9	44	49.7	56	0.09	85
1975	56.7	36	62.2	51	51.2	24	0.98	25
1974	53.6	105	61	76	46.2	125	0.00	125
1973	51.8	134	57.1	137	46.6	121	0.38	57
1972	56.4	43	61.8	62	51	26	0.23	65
1971	54	99	58.9	117	49.1	78	0.03	96
1970	51.9	132	57.2	135	46.6	121	0.00	125
1969	56.5	41	64.4	22	48.6	86	1.15	23
1968	51.7	136	57.3	134	46	127	0.10	79
1967	57.8	14	64.8	16	50.9	29	0.92	27
1966	56.1	53	60.4	84	51.8	21	trace	114
1965	56.1	53	61.9	57	50.2	42	0.16	72
1964	54.8	86	60.4	84	49.2	75	0.05	89
1963	58.4	7	63.8	29	53.1	6	0.83	31
1962	55.5	70	61.6	67	49.4	65	3.77	1
1961	52.6	124	57.9	132	47.2	113	trace	114
1960	55.3	76	60.8	79	49.9	53	0.82	32
1959	56.2	48	63.4	36	48.9	82	0.43	52
1958	55.4	73	60.7	83	50.1	46	trace	114
1957	56.4	43	62.8	46	50.1	46	3.04	4
1956	55.4	73	61.6	67	49.3	68	0.63	39
1955	53.4	106	59.8	102	47.1	114	0.62	41
1954	53.3	111	59.6	107	47.1	114	0.43	52
1953	56.6	38	64.1	23	49.1	78	0.89	29
1952	57.9	13	63.9	26	52	17	0.00	125
1951	56.1	53	60.8	79	51.3	23	1.13	24
1950	57.2	27	63.8	29	50.6	33	2.24	9
1949	51.4	138	58.3	129	44.6	134	2.02	10
1948	55.6	68	61.7	64	49.6	61	1.50	16
1947	56.7	36	61.3	70	52.1	14	0.53	44
1946	52.9	122	59.6	107	46.3	124	0.23	65
1945	53.4	106	58.4	124	48.3	92	0.13	75
1944	54.3	94	60.3	89	48.2	96	0.02	99
1943	57.8	14	62.2	51	53.4	1	trace	114
1942	54.8	86	59.9	97	49.7	56	0.02	99
1941	53.3	111	59.4	111	47.1	114	trace	114
1940	55.9	60	61.9	57	50	51	0.63	39
1939	53.2	116	58.1	131	48.2	96	0.73	35
1938	57.8	14	63.4	36	52.1	14	0.41	54
1937	57	31	64.7	18	49.3	68	3.04	4
1936	55.3	76	61.2	72	49.3	68	trace	114
1935	55.2	81	59.8	102	50.6	33	0.81	33
1934	55.9	60	62.6	49	49.2	75	0.77	34
1933	54	99	58.4	124	49.6	61	0.00	125
1932	52.4	127	56	139	48.8	85	0.16	72
1931	52.8	123	58.8	119	46.8	117	0.02	99
1930	53.8	101	58.6	123	49.1	78	0.40	56
1929	55.7	65	61.7	64	49.7	56	0.10	79
1928	57.3	23	62.7	48	52	17	0.46	50
1927	53.2	116	59.7	104	46.7	118	0.10	79
1926	57.2	27	63.8	29	50.6	33	2.73	6
1925	55.4	73	61.2	72	49.7	56	0.94	26
1924	53.4	106	58.4	124	48.3	92	0.41	54
1923	57.3	23	62.9	44	51.8	21	1.44	18
1922	56.2	48	62.1	55	50.2	42	1.73	12
1921	51.2	140	54.4	140	48	100	0.00	125
1920	59.1	3	65.3	10	52.8	7	1.67	13
1919	54.7	89	61.7	64	47.7	103	0.10	79
1918	55.5	70	60	95	51	26	0.38	57
1917	55.8	62	62.1	55	49.6	61	0.00	125
1916	51.7	136	59.3	112	44	137	0.06	87
1915	52.5	126	59.1	114	45.9	128	0.02	99
1914	54.6	90	59.7	104	49.4	65	0.66	38
1913	51.9	132	57.2	135	46.7	118	0.71	37
1912	51.4	138	57.1	137	45.7	129	0.12	76
1911	52	130	58.4	124	45.6	130	1.26	21
1910	55.1	82	61.8	62	48.4	90	0.57	43
1909	53.3	111	58.7	121	48	100	0.32	61
1908	52.4	127	58.7	121	46.2	125	0.02	99
1907	55.3	76	59.9	97	50.7	32	0.21	68
1906	57.3	23	65.4	9	49.2	75	0.20	69
1905	57.6	19	63.9	26	51.2	24	1.50	16
1904	57.2	27	61.1	75	53.2	5	0.10	79
1903	56.1	53	61.3	70	50.9	29	1.60	14
1902	54.2	95	59.9	97	48.6	86	0.05	89
1901	56.2	48	59.9	97	52.4	10	trace	114
1900	54.1	98	58.9	117	49.3	68	2.37	8
1899	55.8	62	63	43	48.6	86	0.00	125
1898	54.5	92	60.4	84	48.6	86	1.23	22
1897	56.1	53	63.2	39	48.9	82	0.19	70
1896	53.3	111	59	116	47.6	104	0.00	125
1895	52.1	129	59.6	107	44.6	134	0.00	125
1894	53.8	101	59.3	112	48.3	92	0.11	77
1893	54.2	95	61	76	47.4	108	2.53	7
1892	56.9	32	61.9	57	51.9	19	1.27	20
1891	51.8	134	58.2	130	45.4	131	0.04	92
1890	52.6	124	57.9	132	47.3	111	0.03	96
1889	57.4	22	64.9	15	49.9	53	3.55	2
1888	56.6	38	60.8	79	52.3	12	0.46	50
1887	54.6	90	59.9	97	49.3	68	0.51	47

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1987	60
1984	59.6
1920	59.1
2014	58.8
2008	58.8
1992	58.7
2025	58.4
1963	58.4
2015	58.3
1979	58.3

Coldest
Year	Mean, °F
1921	51.2
1949	51.4
1912	51.4
1968	51.7
1916	51.7
1973	51.8
1891	51.8
1970	51.9
1913	51.9
2009	52
More years share the last value

Wettest
Year	Precipitation, in
1962	3.77
1889	3.55
2011	3.13
1957	3.04
1937	3.04
1926	2.73
1893	2.53
1900	2.37
1950	2.24
1949	2.02

Driest
Year	Precipitation, in
2019	0.00
2017	0.00
2014	0.00
2013	0.00
2012	0.00
1991	0.00
1985	0.00
1974	0.00
1970	0.00
1952	0.00
More years share the last value

The hottest, coldest and wettest days

Hottest day: 61°F; 9 October 2026, 2 October 2026, 1 October 2026
Coldest night: 50°F; 9 October 2026, 8 October 2026, 7 October 2026, 6 October 2026, 4 October 2026, 2 October 2026
Wettest day: 0.01 in; 9 October 2026, 8 October 2026, 5 October 2026, 3 October 2026

Every month, season and year

Months

Seasons

Years

Eureka, CA the day's answers

All-time records

Every answer in words

October 2026 so far brought 0.04 in of precipitation in Eureka, CA, the driest 1 to 9 October since 2025, tied 46th driest of 140 (with 2025, 2022 and 1891).
The hottest day of October 2026 so far in Eureka, CA: 61°F on Friday 9 October 2026, Friday 2 October 2026 and Thursday 1 October 2026.
The coldest night of October 2026 so far in Eureka, CA: a low of 50°F on Friday 9 October 2026, Thursday 8 October 2026, Wednesday 7 October 2026 and 3 other days.
The wettest day of October 2026 so far in Eureka, CA: 0.01 in on Friday 9 October 2026, Thursday 8 October 2026, Monday 5 October 2026 and 1 other day.