San Francisco May 20 Weather Records

Year	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
2023	59	51	0.02	n/a
2022	69	50	0.00	n/a
2021	60	48	0.00	n/a
2020	65	53	0.00	n/a
2019	61	51	0.01	n/a
2018	59	52	0.00	n/a
2017	77	51	0.00	n/a
2016	58	50	0.00	n/a
2015	59	53	0.03	n/a
2014	64	53	0.00	n/a
2013	79	52	0.00	n/a
2012	68	51	0.00	n/a
2011	59	51	0.00	n/a
2010	63	49	0.00	n/a
2009	61	49	0.00	n/a
2008	60	51	0.00	n/a
2007	63	50	0.00	n/a
2006	67	52	0.00	n/a
2005	65	54	0.00	n/a
2004	61	51	0.00	n/a
2003	75	53	0.00	n/a
2002	60	48	0.25	n/a
2001	69	52	0.00	n/a
2000	71	53	0.00	n/a
1999	58	48	0.00	0.0
1998	61	50	0.00	n/a
1997	65	55	0.00	n/a
1996	67	53	0.00	n/a
1995	60	52	0.00	n/a
1994	65	52	0.00	n/a
1993	70	60	0.00	n/a
1992	72	57	0.00	n/a
1991	60	49	0.00	n/a
1990	64	55	0.22	n/a
1989	61	51	0.00	n/a
1988	n/a	55	0.00	n/a
1987	63	52	0.00	n/a
1986	64	52	0.00	n/a
1985	64	52	0.00	n/a
1984	65	51	0.00	n/a
1983	78	56	0.00	n/a
1982	60	48	0.00	n/a
1981	62	50	0.00	n/a
1980	60	53	0.00	n/a
1979	64	56	0.00	n/a
1978	58	51	0.00	n/a
1977	60	50	0.00	n/a
1976	64	50	0.00	n/a
1975	69	49	0.00	n/a
1974	56	49	0.00	n/a
1973	58	51	0.00	n/a
1972	62	53	0.00	0.0
1971	61	48	0.00	0.0
1970	62	48	0.00	0.0
1969	60	50	0.00	0.0
1968	65	55	0.00	0.0
1967	63	49	0.00	0.0
1966	58	49	0.00	0.0
1965	58	49	0.00	0.0
1964	61	51	0.00	0.0
1963	57	54	0.01	0.0
1962	61	47	0.00	0.0
1961	60	52	0.00	0.0
1960	60	50	0.00	0.0
1959	70	52	0.00	0.0
1958	63	55	0.00	0.0
1957	55	51	0.91	0.0
1956	65	50	0.00	0.0
1955	62	50	0.00	0.0
1954	59	50	0.00	0.0
1953	61	49	0.00	0.0
1952	64	49	0.00	0.0
1951	57	49	0.00	0.0
1950	72	50	0.00	0.0
1949	62	52	0.00	0.0
1948	56	49	0.15	n/a
1947	64	48	0.00	0.0
1946	56	50	0.00	0.0
1945	63	51	0.00	0.0
1944	72	53	0.00	0.0
1943	63	48	0.00	0.0
1942	88	63	0.00	0.0
1941	85	64	0.00	0.0
1940	60	52	0.00	0.0
1939	63	52	0.33	0.0
1938	59	51	0.00	0.0
1937	66	50	0.00	0.0
1936	66	51	0.00	0.0
1935	85	60	0.00	0.0
1934	71	54	0.00	0.0
1933	59	50	0.00	0.0
1932	63	54	0.04	0.0
1931	86	56	0.00	0.0
1930	64	51	0.00	0.0
1929	58	49	0.00	0.0
1928	60	52	0.00	0.0
1927	60	49	0.00	0.0
1926	70	54	0.00	0.0
1925	67	56	0.03	0.0
1924	61	52	0.00	0.0
1923	60	49	0.00	0.0
1922	59	49	0.00	0.0
1921	58	49	0.07	0.0

What's the all-time high for San Francisco on 5/20?

For the date of May 20, the highest temperature ever reached in San Francisco history is 88 °F which happened in 1942.

Highest Temperatures in San Francisco on May 20

Rank	Temperature	Year
1	88 °F	1942
2	86 °F	1931
3	85 °F	1935
3	85 °F	1941
5	79 °F	2013
6	78 °F	1983
7	77 °F	2017
8	75 °F	2003
9	72 °F	1944
9	72 °F	1950
9	72 °F	1992

What's the all-time low for San Francisco on 5/20?

For the date of May 20, the lowest temperature ever reached in San Francisco history is 47 °F which happened in 1962.

Lowest Temperatures in San Francisco on May 20

Rank	Temperature	Year
1	47 °F	1962
2	48 °F	1999
2	48 °F	2021
2	48 °F	1982
2	48 °F	2002
2	48 °F	1971
2	48 °F	1947
2	48 °F	1943
2	48 °F	1970
10	49 °F	1991
10	49 °F	1975
10	49 °F	1923
10	49 °F	1927
10	49 °F	1965
10	49 °F	1951
10	49 °F	1966
10	49 °F	1948
10	49 °F	1922
10	49 °F	1967
10	49 °F	1974
10	49 °F	1929
10	49 °F	2009
10	49 °F	1921
10	49 °F	2010
10	49 °F	1952
10	49 °F	1953

Lowest High Temperatures in San Francisco on May 20

Rank	Temperature	Year
1	55 °F	1957
2	56 °F	1948
2	56 °F	1946
2	56 °F	1974
5	57 °F	1963
5	57 °F	1951
7	58 °F	2016
7	58 °F	1999
7	58 °F	1921
7	58 °F	1978
7	58 °F	1929
7	58 °F	1973
7	58 °F	1965
7	58 °F	1966

What's the most it has ever rained in San Francisco on 5/20?

For the date of May 20, the most precipitation ever recorded in San Francisco history is 0.91 inches which happened in 1957.

All-Time Most Precipitation in San Francisco on May 20

Rank	Precipitation	Year
1	0.91 inches	1957
2	0.33 inches	1939
3	0.25 inches	2002
4	0.22 inches	1990
5	0.15 inches	1948
6	0.07 inches	1921
7	0.04 inches	1932
8	0.03 inches	2015
8	0.03 inches	1925
10	0.02 inches	2023

Weather Station Details

Years	Station	Coordinates
1921–2024	Downtown San Francisco	location