San Francisco August 18 Weather Records

Year	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
2023	73	61	0.00	n/a
2022	65	53	0.00	n/a
2021	69	57	0.00	n/a
2020	77	61	0.00	n/a
2019	72	57	0.00	n/a
2018	66	52	0.00	n/a
2017	68	58	0.00	n/a
2016	65	56	0.00	n/a
2015	70	59	0.00	n/a
2014	62	57	0.00	n/a
2013	70	57	0.00	0.0
2012	63	54	0.00	0.0
2011	65	53	0.00	0.0
2010	65	54	0.00	n/a
2009	65	54	0.00	n/a
2008	66	57	0.00	n/a
2007	68	55	0.00	n/a
2006	64	53	0.00	0.0
2005	64	55	0.00	n/a
2004	70	56	0.00	n/a
2003	64	56	0.00	n/a
2002	65	53	0.00	n/a
2001	71	53	0.00	n/a
2000	67	52	0.00	0.0
1999	63	56	0.00	0.0
1998	60	54	0.00	0.0
1997	72	59	0.00	n/a
1996	73	56	0.00	n/a
1995	80	56	0.00	n/a
1994	67	55	0.00	n/a
1993	72	56	0.00	n/a
1992	76	53	0.00	n/a
1991	64	57	0.01	n/a
1990	71	60	0.00	n/a
1989	67	58	0.00	n/a
1988	79	55	0.00	n/a
1987	68	58	0.00	n/a
1986	75	56	0.00	n/a
1985	72	59	0.00	n/a
1984	73	57	0.00	n/a
1983	70	60	0.04	n/a
1982	60	55	0.00	n/a
1981	62	54	0.00	n/a
1980	67	54	0.00	n/a
1979	63	56	0.00	n/a
1978	77	57	0.00	n/a
1977	66	58	0.00	n/a
1976	65	59	0.34	n/a
1975	62	56	0.02	n/a
1974	65	54	0.00	n/a
1973	61	52	0.00	0.0
1972	62	55	0.00	0.0
1971	68	54	0.00	0.0
1970	58	50	0.00	0.0
1969	58	52	0.00	0.0
1968	65	59	0.00	0.0
1967	62	53	0.00	0.0
1966	61	53	0.00	0.0
1965	64	53	0.00	0.0
1964	66	54	0.00	0.0
1963	69	55	0.00	0.0
1962	72	54	0.00	0.0
1961	67	53	0.00	0.0
1960	63	51	0.00	0.0
1959	60	56	0.00	0.0
1958	63	57	0.00	0.0
1957	62	52	0.00	0.0
1956	63	52	0.00	0.0
1955	58	49	0.00	0.0
1954	60	52	0.00	0.0
1953	62	54	0.00	0.0
1952	69	52	0.00	0.0
1951	62	53	0.00	0.0
1950	66	52	0.00	0.0
1949	64	54	0.00	0.0
1948	67	55	0.00	0.0
1947	64	57	0.00	0.0
1946	60	53	0.00	0.0
1945	77	55	0.00	0.0
1944	63	53	0.00	0.0
1943	61	54	0.00	0.0
1942	62	53	0.00	0.0
1941	64	58	0.00	0.0
1940	67	58	0.00	0.0
1939	67	55	0.00	0.0
1938	66	56	0.00	0.0
1937	66	51	0.00	0.0
1936	65	54	0.00	0.0
1935	65	53	0.00	0.0
1934	88	58	0.00	0.0
1933	62	54	0.00	0.0
1932	71	51	0.00	0.0
1931	64	51	0.00	0.0
1930	67	56	0.00	0.0
1929	67	54	0.00	0.0
1928	60	50	0.00	0.0
1927	66	56	0.00	0.0
1926	71	58	0.00	0.0
1925	66	54	0.00	0.0
1924	70	58	0.01	0.0
1923	65	56	0.00	0.0
1922	65	53	0.00	0.0
1921	67	55	0.00	0.0

What's the all-time high for San Francisco on 8/18?

For the date of Aug 18, the highest temperature ever reached in San Francisco history is 88 °F which happened in 1934.

Highest Temperatures in San Francisco on August 18

Rank	Temperature	Year
1	88 °F	1934
2	80 °F	1995
3	79 °F	1988
4	77 °F	1978
4	77 °F	2020
4	77 °F	1945
7	76 °F	1992
8	75 °F	1986
9	73 °F	1984
9	73 °F	2023
9	73 °F	1996

What's the all-time low for San Francisco on 8/18?

For the date of Aug 18, the lowest temperature ever reached in San Francisco history is 49 °F which happened in 1955.

Lowest Temperatures in San Francisco on August 18

Rank	Temperature	Year
1	49 °F	1955
2	50 °F	1928
2	50 °F	1970
4	51 °F	1937
4	51 °F	1931
4	51 °F	1960
4	51 °F	1932
8	52 °F	2018
8	52 °F	2000
8	52 °F	1973
8	52 °F	1957
8	52 °F	1954
8	52 °F	1956
8	52 °F	1969
8	52 °F	1952
8	52 °F	1950

Lowest High Temperatures in San Francisco on August 18

Rank	Temperature	Year
1	58 °F	1955
1	58 °F	1970
1	58 °F	1969
4	60 °F	1954
4	60 °F	1928
4	60 °F	1998
4	60 °F	1982
4	60 °F	1959
4	60 °F	1946
10	61 °F	1943
10	61 °F	1973
10	61 °F	1966

What's the most it has ever rained in San Francisco on 8/18?

For the date of Aug 18, the most precipitation ever recorded in San Francisco history is 0.34 inches which happened in 1976.

All-Time Most Precipitation in San Francisco on August 18

Rank	Precipitation	Year
1	0.34 inches	1976
2	0.04 inches	1983
3	0.02 inches	1975
4	0.01 inches	1924
4	0.01 inches	1991

Weather Station Details

Years	Station	Coordinates
1921–2024	Downtown San Francisco	location