Eureka August 21 Weather Records

Daily averages and all-time records for weather in Eureka, California for the date of August 21.

August 21 All-Time Records
1941–2024

78 °F

48 °F

54 °F

Highest daily low

60 °F

0.16 inches

Most snow

none

August 21 Average Weather
1991–2020 ¹

Average high

64.9 °F

Average low

53.3 °F

Chance precipitation

10.2%

Chance snow

Year	High (°F)	Low (°F)	Precip. (inches)
2023	62	54	0.00
2022	64	54	0.00
2021	63	51	0.00
2020	74	59	0.00
2019	78	54	0.02
2018	58	53	0.00
2017	56	53	0.00
2016	62	50	0.00
2015	65	55	0.00
2014	66	52	0.00
2013	62	55	0.00
2012	63	53	0.01
2011	63	55	0.00
2010	57	52	0.00
2009	65	55	0.00
2008	65	56	0.16
2007	69	58	0.00
2006	64	51	0.00
2005	61	55	0.00
2004	65	54	0.00
2003	66	53	0.00
2002	61	51	0.00
2001	69	55	0.00
2000	65	55	0.00
1999	67	57	0.00
1998	63	53	0.00
1997	70	55	0.00
1996	65	53	0.00
1995	65	53	0.00
1994	69	58	0.00
1993	65	56	0.00
1992	68	55	0.00
1991	63	55	0.00
1990	69	57	0.00
1989	68	55	0.00
1988	62	53	0.00
1987	61	51	0.00
1986	58	51	0.00
1985	65	50	0.00
1984	66	56	0.00
1983	68	55	0.00
1982	65	53	0.00
1981	61	53	0.00
1980	58	48	0.00
1979	65	55	0.00
1978	60	54	0.06
1977	62	55	0.00
1976	61	55	0.00
1975	59	51	0.00
1974	62	54	0.00
1973	59	52	0.00
1972	67	57	0.00
1971	73	60	0.14
1970	54	49	0.00
1969	59	53	0.00
1968	63	55	0.00
1967	61	51	0.00
1966	57	50	0.00
1965	64	56	0.00
1964	63	51	0.00
1963	63	55	0.00
1962	63	54	0.00
1961	65	54	0.00
1960	64	50	0.01
1959	63	54	0.00
1958	60	52	0.00
1957	61	57	0.00
1956	59	54	0.00
1955	54	49	0.00
1954	61	53	0.00
1953	63	56	0.00
1952	64	52	0.00
1951	58	52	0.00
1950	60	53	0.00
1949	63	53	0.00
1948	63	56	0.00
1947	63	50	0.00
1946	58	52	0.00
1945	69	51	0.00
1944	61	54	0.00
1943	67	55	0.00
1942	59	55	0.00

What's the all-time high for Eureka on 8/21?

For the date of Aug 21, the highest temperature ever reached in Eureka history is 78 °F which happened in 2019.

Highest Temperatures in Eureka on August 21

What's the all-time low for Eureka on 8/21?

For the date of Aug 21, the lowest temperature ever reached in Eureka history is 48 °F which happened in 1980.

Lowest Temperatures in Eureka on August 21

Lowest High Temperatures in Eureka on August 21

What's the most it has ever rained in Eureka on 8/21?

For the date of Aug 21, the most precipitation ever recorded in Eureka history is 0.16 inches which happened in 2008.

All-Time Most Precipitation in Eureka on August 21

Weather Station Details

Years	Station	Coordinates
1941–2024	Eureka Woodley Island	location