Average September Temperature in Eureka by Year

This page contains a list of the average monthly high and low temperatures in Eureka, California for the month of September each year between 1942 and 2023. It is based on NOAA data.

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What Was the Hottest September Ever in Eureka?

1979 was the warmest September in the history of Eureka, California. The average daily high temperature was 68.2 °F, and the average low was 56.2 °F.

What Was the Coldest September Ever in Eureka?

1960 was the coolest September in the history of Eureka, California. The average daily high temperature was 57.9 °F, and the average low was 49.3 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2023	20	65.1	52.2
2022	17	65.4	52.1
2021	56	63.0	49.4
2020	5	68.1	53.2
2019	6	67.3	53.9
2018	49	63.4	49.9
2017	8	67.4	53.1
2016	46	63.2	50.6
2015	23	64.9	51.2
2014	11	66.1	53.0
2013	9	67.2	53.2
2012	81	59.2	48.0
2011	45	63.5	50.3
2010	37	63.7	50.9
2009	12	67.0	52.0
2008	73	61.7	48.6
2007	44	64.2	49.8
2006	69	61.5	49.0
2005	76	60.8	49.3
2004	24	65.6	50.5
2003	25	65.2	50.8
2002	38	64.7	49.8
2001	57	62.8	49.5
2000	18	66.1	51.3
1999	77	61.3	48.5
1998	35	63.4	51.3
1997	2	69.4	55.0
1996	59	62.6	49.0
1995	7	66.8	53.7
1994	10	65.4	53.7
1993	60	61.1	50.5
1992	33	63.9	51.0
1991	39	63.2	51.2
1990	3	66.9	56.2
1989	51	61.8	51.4
1988	62	62.5	49.0
1987	36	62.3	52.3
1986	40	63.6	50.7
1985	47	62.7	50.7
1984	21	65.6	51.0
1983	4	67.9	53.5
1982	19	65.7	51.6
1981	26	63.7	52.1
1980	50	62.4	50.8
1979	1	68.2	56.2
1978	31	63.6	51.5
1977	43	62.6	51.7
1976	58	61.5	50.8
1975	71	59.6	50.8
1974	64	60.0	51.2
1973	42	62.8	51.4
1972	61	61.1	50.5
1971	48	62.0	51.4
1970	63	62.0	49.3
1969	54	62.2	50.8
1968	34	62.9	52.0
1967	16	65.0	53.2
1966	27	63.8	52.1
1965	80	58.4	49.4
1964	70	61.0	49.4
1963	13	64.5	54.2
1962	41	61.7	52.5
1961	68	60.9	49.8
1960	82	57.9	49.3
1959	28	63.1	52.4
1958	15	65.4	52.8
1957	14	64.9	53.7
1956	55	62.3	50.4
1955	78	60.3	49.2
1954	32	63.0	52.0
1953	22	62.8	53.6
1952	65	60.5	50.6
1951	75	59.0	51.1
1950	67	60.2	50.7
1949	52	61.7	51.4
1948	72	60.8	49.6
1947	30	63.3	51.9
1946	53	62.9	50.1
1945	74	61.0	49.1
1944	79	58.9	50.2
1943	29	63.0	52.3
1942	66	60.2	50.8

Weather Station Details

Years	Station	Coordinates
1941–2024	Eureka Woodley Island	location