San Francisco October 21 Weather Records

Year	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
2023	68	55	0.00	n/a
2022	59	53	0.00	n/a
2021	67	60	0.63	n/a
2020	75	57	0.00	n/a
2019	77	56	0.00	0.0
2018	60	52	0.00	n/a
2017	65	51	0.00	n/a
2016	71	56	0.00	n/a
2015	77	57	0.00	n/a
2014	67	55	0.00	n/a
2013	57	49	0.00	n/a
2012	60	51	0.03	n/a
2011	70	53	0.00	0.0
2010	65	57	0.00	n/a
2009	69	54	0.00	n/a
2008	77	53	0.00	0.0
2007	71	55	0.00	n/a
2006	82	58	0.00	n/a
2005	65	51	0.00	n/a
2004	64	50	0.00	n/a
2003	73	53	0.00	n/a
2002	60	50	0.00	n/a
2001	56	51	0.00	n/a
2000	65	52	0.00	n/a
1999	82	56	0.00	n/a
1998	81	52	0.00	0.0
1997	64	53	0.00	n/a
1996	72	52	0.00	n/a
1995	72	55	0.00	n/a
1994	78	51	0.00	n/a
1993	69	55	0.00	n/a
1992	70	57	0.00	n/a
1991	67	59	0.00	n/a
1990	79	52	0.00	n/a
1989	63	58	0.08	n/a
1988	61	53	0.00	n/a
1987	71	54	0.00	n/a
1986	72	54	0.00	n/a
1985	62	54	0.03	n/a
1984	66	51	0.00	n/a
1983	72	52	0.00	n/a
1982	72	60	0.02	n/a
1981	61	52	0.00	n/a
1980	70	50	0.00	0.0
1979	68	54	0.00	n/a
1978	65	55	0.00	n/a
1977	67	53	0.00	n/a
1976	63	55	0.00	n/a
1975	64	54	0.00	n/a
1974	75	55	0.00	n/a
1973	69	60	0.03	n/a
1972	65	56	0.00	0.0
1971	68	52	0.00	0.0
1970	62	54	0.26	0.0
1969	74	54	0.00	0.0
1968	68	54	0.00	0.0
1967	63	55	0.00	0.0
1966	64	53	0.00	0.0
1965	85	60	0.00	0.0
1964	83	62	0.00	0.0
1963	68	59	0.00	0.0
1962	68	53	0.01	0.0
1961	59	51	0.00	0.0
1960	62	51	0.00	0.0
1959	70	55	0.00	0.0
1958	75	56	0.00	0.0
1957	67	55	0.00	0.0
1956	72	54	0.00	0.0
1955	62	52	0.00	0.0
1954	69	55	0.00	0.0
1953	69	60	0.00	0.0
1952	60	51	0.00	0.0
1951	66	54	0.00	0.0
1950	69	55	0.00	0.0
1949	65	49	0.00	0.0
1948	79	52	0.00	0.0
1947	65	56	0.00	0.0
1946	66	55	0.00	0.0
1945	68	55	0.00	0.0
1944	70	55	0.39	0.0
1943	62	53	0.02	0.0
1942	82	54	0.00	0.0
1941	59	55	0.02	0.0
1940	66	57	0.00	0.0
1939	87	58	0.00	0.0
1938	76	55	0.00	0.0
1937	87	60	0.00	0.0
1936	61	53	0.00	0.0
1935	70	54	0.00	0.0
1934	65	56	0.13	0.0
1933	70	50	0.00	0.0
1932	71	54	0.00	0.0
1931	59	52	0.00	0.0
1930	68	55	0.00	0.0
1929	89	59	0.00	0.0
1928	60	50	0.00	0.0
1927	70	52	0.00	0.0
1926	63	56	0.00	0.0
1925	82	58	0.00	0.0
1924	68	55	0.05	0.0
1923	63	55	0.00	0.0
1922	81	56	0.00	0.0
1921	67	53	0.00	0.0

What's the all-time high for San Francisco on 10/21?

For the date of Oct 21, the highest temperature ever reached in San Francisco history is 89 °F which happened in 1929.

Highest Temperatures in San Francisco on October 21

Rank	Temperature	Year
1	89 °F	1929
2	87 °F	1937
2	87 °F	1939
4	85 °F	1965
5	83 °F	1964
6	82 °F	1925
6	82 °F	2006
6	82 °F	1999
6	82 °F	1942
10	81 °F	1998
10	81 °F	1922

What's the all-time low for San Francisco on 10/21?

For the date of Oct 21, the lowest temperature ever reached in San Francisco history is 49 °F which has happened 2 times, most recently in 2013.

Lowest Temperatures in San Francisco on October 21

Rank	Temperature	Year
1	49 °F	2013
1	49 °F	1949
3	50 °F	2002
3	50 °F	1933
3	50 °F	1928
3	50 °F	1980
3	50 °F	2004
8	51 °F	1994
8	51 °F	1960
8	51 °F	2005
8	51 °F	2012
8	51 °F	1984
8	51 °F	1961
8	51 °F	1952
8	51 °F	2001
8	51 °F	2017

Lowest High Temperatures in San Francisco on October 21

Rank	Temperature	Year
1	56 °F	2001
2	57 °F	2013
3	59 °F	2022
3	59 °F	1931
3	59 °F	1961
3	59 °F	1941
7	60 °F	2012
7	60 °F	1952
7	60 °F	2018
7	60 °F	2002
7	60 °F	1928

What's the most it has ever rained in San Francisco on 10/21?

For the date of Oct 21, the most precipitation ever recorded in San Francisco history is 0.63 inches which happened in 2021.

All-Time Most Precipitation in San Francisco on October 21

Rank	Precipitation	Year
1	0.63 inches	2021
2	0.39 inches	1944
3	0.26 inches	1970
4	0.13 inches	1934
5	0.08 inches	1989
6	0.05 inches	1924
7	0.03 inches	1985
7	0.03 inches	1973
7	0.03 inches	2012
10	0.02 inches	1982
10	0.02 inches	1941
10	0.02 inches	1943

Weather Station Details

Years	Station	Coordinates
1921–2024	Downtown San Francisco	location