San Francisco - Highest Temperature for Each Year





Here's where you'll find answers to questions about the highest temperatures and hottest days in San Francisco, California. How hot did it get in 2018? How often do thermometers in San Francisco rise above 100 °F? What was the highest temperature in San Francisco five decades ago? Answers to those questions and much more can be found quickly and easily in the list below of record high temperatures.

This page gives the highest temperature for each year in San Francisco and the date that it happened. A date with a plus sign beside it means it was that hot on at least one other day earlier that year.

These temperature extremes were measured in downtown San Francisco and go back to 1921. The highest temperature recorded during that time there was 106 degrees Fahrenheit (41 Celsius) on September 1, 2017.

Highest San Francisco temperatures in recent years
Max °F Date Max °C
83 September 20, 2018 28
106 September 01, 2017 41
92 September 25, 2016 33
95 September 08, 2015 35
92 October 03, 2014 33
88 May 02, 2013 31
94 October 02, 2012 34
88 September 28, 2011 + 31
98 August 24, 2010 37
Highest temperature recorded at San Francisco each year
Max °F Date Max °C
96 August 28, 2009 36
97 June 20, 2008 36
88 May 07, 2007 31
87 July 22, 2006 31
87 March 11, 2005 31
96 September 05, 2004 36
97 September 21, 2003 36
91 October 07, 2002 33
96 September 30, 2001 36
103 June 14, 2000 39
92 September 28, 1999 33
86 August 03, 1998 30
97 September 23, 1997 36
99 October 08, 1996 37
97 June 24, 1995 36
92 September 15, 1994 33
95 August 27, 1993 + 35
94 October 10, 1992 + 34
96 October 10, 1991 36
92 June 08, 1990 33
97 June 22, 1989 36
93 October 17, 1988 + 34
102 October 05, 1987 39
91 June 09, 1986 33
97 October 03, 1985 36
100 September 08, 1984 38
98 September 12, 1983 37
87 August 06, 1982 31
89 April 29, 1981 32
97 October 01, 1980 36
98 September 11, 1979 37
92 October 13, 1978 + 33
85 July 30, 1977 29
95 June 24, 1976 35
93 May 29, 1975 34
89 October 17, 1974 32
93 June 20, 1973 34
92 July 14, 1972 33
101 September 14, 1971 38
92 September 26, 1970 + 33
82 September 25, 1969 28
96 August 29, 1968 36
87 September 20, 1967 + 31
95 September 28, 1966 35
90 October 24, 1965 32
92 September 24, 1964 33
88 September 26, 1963 + 31
88 June 19, 1962 31
94 October 15, 1961 34
89 September 25, 1960 32
92 July 10, 1959 33
92 September 26, 1958 33
88 September 07, 1957 31
91 May 16, 1956 33
88 September 01, 1955 31
93 September 25, 1954 34
89 September 13, 1953 32
90 September 01, 1952 32
89 September 08, 1951 32
90 September 03, 1950 32
92 June 04, 1949 33
84 October 17, 1948 29
92 September 20, 1947 33
91 September 22, 1946 33
87 June 16, 1945 31
91 September 09, 1944 33
96 September 21, 1943 + 36
88 June 28, 1942 + 31
89 May 10, 1941 32
84 October 11, 1940 29
97 September 22, 1939 + 36
89 September 09, 1938 32
89 September 25, 1937 32
91 September 07, 1936 33
89 September 17, 1935 + 32
95 June 29, 1934 35
92 October 05, 1933 33
100 September 09, 1932 38
95 July 04, 1931 35
92 October 06, 1930 33
95 June 21, 1929 35
99 September 21, 1928 37
93 June 30, 1927 34
89 April 25, 1926 32
95 June 24, 1925 35
88 September 11, 1924 + 31
87 September 05, 1923 31
91 September 08, 1922 33
94 July 06, 1921 34
Reference

Jay Lawrimore. 2016. Global Summary of the Year, Version 1.0. NOAA National Centers for Environmental Information. 

San Francisco - Extremes
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