San Francisco May 18 Weather Records

Year	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
2023	59	51	0.00	n/a
2022	77	50	0.00	n/a
2021	63	50	0.00	n/a
2020	63	55	0.12	n/a
2019	56	52	0.77	n/a
2018	60	52	0.00	n/a
2017	71	50	0.00	n/a
2016	70	55	0.00	n/a
2015	59	53	0.00	n/a
2014	63	53	0.00	n/a
2013	66	50	0.00	n/a
2012	66	49	0.00	n/a
2011	62	51	0.00	0.0
2010	64	53	0.01	n/a
2009	59	50	0.00	n/a
2008	61	50	0.00	n/a
2007	60	50	0.00	n/a
2006	59	49	0.00	n/a
2005	66	58	0.30	n/a
2004	61	52	0.00	n/a
2003	68	51	0.00	n/a
2002	57	48	0.00	n/a
2001	69	52	0.00	n/a
2000	70	53	0.00	n/a
1999	60	49	0.00	0.0
1998	66	51	0.00	n/a
1997	73	56	0.00	n/a
1996	66	56	0.00	n/a
1995	69	52	0.00	n/a
1994	62	51	0.00	n/a
1993	76	55	0.00	n/a
1992	69	58	0.00	n/a
1991	60	48	0.00	n/a
1990	60	49	0.00	n/a
1989	65	49	0.00	n/a
1988	71	51	0.00	n/a
1987	60	52	0.00	n/a
1986	61	51	0.00	n/a
1985	63	52	0.00	n/a
1984	65	50	0.00	n/a
1983	77	54	0.00	n/a
1982	63	48	0.00	n/a
1981	62	53	0.15	n/a
1980	62	50	0.00	n/a
1979	61	51	0.00	n/a
1978	86	56	0.00	n/a
1977	56	48	0.08	n/a
1976	58	48	0.00	n/a
1975	58	50	0.00	n/a
1974	54	47	0.00	n/a
1973	59	50	0.00	n/a
1972	60	49	0.00	0.0
1971	68	50	0.00	0.0
1970	55	49	0.00	0.0
1969	61	53	0.00	0.0
1968	63	52	0.00	0.0
1967	60	51	0.00	0.0
1966	65	52	0.00	0.0
1965	57	48	0.00	0.0
1964	59	47	0.00	0.0
1963	60	52	0.00	0.0
1962	60	49	0.00	0.0
1961	57	52	0.00	0.0
1960	65	51	0.00	0.0
1959	62	51	0.00	0.0
1958	67	56	0.00	0.0
1957	60	53	1.26	0.0
1956	59	51	0.00	0.0
1955	81	54	0.00	0.0
1954	59	50	0.00	0.0
1953	62	48	0.00	0.0
1952	78	49	0.00	0.0
1951	63	51	0.00	0.0
1950	60	47	0.00	0.0
1949	60	49	0.50	0.0
1948	58	50	0.00	n/a
1947	63	50	0.00	0.0
1946	56	50	0.00	0.0
1945	59	52	0.01	0.0
1944	61	51	0.00	0.0
1943	73	48	0.00	0.0
1942	65	50	0.00	0.0
1941	64	50	0.00	0.0
1940	67	52	0.00	0.0
1939	61	49	0.00	0.0
1938	62	49	0.00	0.0
1937	61	51	0.00	0.0
1936	60	52	0.00	0.0
1935	71	50	0.00	0.0
1934	62	52	0.00	0.0
1933	61	50	0.00	0.0
1932	64	52	0.00	0.0
1931	86	59	0.00	0.0
1930	64	50	0.00	0.0
1929	58	50	0.00	0.0
1928	63	53	0.00	0.0
1927	64	49	0.00	0.0
1926	80	56	0.00	0.0
1925	64	57	0.86	0.0
1924	61	50	0.00	0.0
1923	58	48	0.00	0.0
1922	62	52	0.00	0.0
1921	58	48	0.00	0.0

What's the all-time high for San Francisco on 5/18?

For the date of May 18, the highest temperature ever reached in San Francisco history is 86 °F which has happened 2 times, most recently in 1978.

Highest Temperatures in San Francisco on May 18

Rank	Temperature	Year
1	86 °F	1978
1	86 °F	1931
3	81 °F	1955
4	80 °F	1926
5	78 °F	1952
6	77 °F	2022
6	77 °F	1983
8	76 °F	1993
9	73 °F	1943
9	73 °F	1997

What's the all-time low for San Francisco on 5/18?

For the date of May 18, the lowest temperature ever reached in San Francisco history is 47 °F which has happened 3 times, most recently in 1974.

Lowest Temperatures in San Francisco on May 18

Rank	Temperature	Year
1	47 °F	1974
1	47 °F	1964
1	47 °F	1950
4	48 °F	1921
4	48 °F	1991
4	48 °F	1923
4	48 °F	1976
4	48 °F	1943
4	48 °F	1965
4	48 °F	2002
4	48 °F	1953
4	48 °F	1977
4	48 °F	1982

Lowest High Temperatures in San Francisco on May 18

Rank	Temperature	Year
1	54 °F	1974
2	55 °F	1970
3	56 °F	2019
3	56 °F	1977
3	56 °F	1946
6	57 °F	1965
6	57 °F	2002
6	57 °F	1961
9	58 °F	1921
9	58 °F	1929
9	58 °F	1923
9	58 °F	1976
9	58 °F	1975
9	58 °F	1948

What's the most it has ever rained in San Francisco on 5/18?

For the date of May 18, the most precipitation ever recorded in San Francisco history is 1.26 inches which happened in 1957.

All-Time Most Precipitation in San Francisco on May 18

Rank	Precipitation	Year
1	1.26 inches	1957
2	0.86 inches	1925
3	0.77 inches	2019
4	0.50 inches	1949
5	0.30 inches	2005
6	0.15 inches	1981
7	0.12 inches	2020
8	0.08 inches	1977
9	0.01 inches	2010
9	0.01 inches	1945

Weather Station Details

Years	Station	Coordinates
1921–2024	Downtown San Francisco	location