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San Francisco Weather Records

San Francisco, California weather data and records from 1921–2022 based on data compiled by the NOAA.
All data displayed in U.S. customary units.
All data displayed in metric units.
All-Time Recorded High
The highest temperature ever recorded in San Francisco, California was 106.0 °F41.1 °C which occurred on September 1, 2017.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in San Francisco, California was 27.0 °F-2.8 °C which occurred on December 11, 1932.
Lowest Temperatures: All-Time By Year
San Francisco Weather by Month
Averages based on the years 1991–2020
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
☀️ Average high (°F°C) 58.414.7 61.016.1 62.817.1 63.717.6 64.718.2 67.219.5 67.119.5 68.620.3 70.821.6 70.421.3 64.217.9 58.514.7 64.818.2
🌙 Average low (°F°C) 46.98.3 48.29.0 49.29.5 49.910.0 51.710.9 53.311.8 54.712.6 55.813.2 55.913.3 54.712.6 50.910.5 47.28.4 51.510.9
☀️ Record high (°F°C) 79.026.1 81.027.2 87.130.6 93.934.4 97.036.1 102.939.4 99.037.2 98.136.7 106.041.1 102.038.9 86.030.0 75.924.4 106.041.1
🌙 Record low (°F°C) 30.0-1.1 30.9-0.6 35.11.7 39.94.4 43.06.1 46.98.3 46.98.3 48.08.9 48.08.9 43.06.1 39.03.9 27.0-2.8 27.0-2.8
💧 Average precipitation (inchescm) 4.411.2 4.411.1 3.28.0 1.64.1 0.71.8 0.20.5 0.00.0 0.10.1 0.10.3 0.92.4 2.66.6 4.812.1 22.958.1
💧 Daily % chance precipitation 36.0 38.0 34.7 22.8 12.8 5.2 2.2 3.7 3.9 11.3 26.2 37.6 19.4
More San Francisco Weather Records
1921–2022
Highest daily low 75.0 °F23.9 °C September 2, 2017
Lowest daily high 35.1 °F1.7 °C December 11, 1932
Most daily precipitation 5.5 inches14.1 cm November 5, 1994
Most monthly precipitation 14.9 inches37.8 cm February 1998
Most yearly precipitation 43.8 inches111.2 cm 1983
Earliest freeze December 9 1972
Latest freeze February 6 1989
San Francisco Weather Streaks
Most consecutive days...
With precipitation 19 days Jan 27 – Feb 14, 1938
Without precipitation 142 days May 4 – Sep 22, 1930
High temperature ≥ 80 °F27 °C 8 days Oct 4–11, 1992
High temperature ≥ 90 °F32 °C 4 days Oct 25–28, 2003
Facts About San Francisco Weather
  • It almost never rains in San Francisco in July. During the entire thirty year period from 1991–2020, San Francisco received a total of less of 1" of rain during the month of July. Even Death Valley gets more rain than San Francisco in July.
San Francisco Weather by Year
1921 1922 1923 1924 1925 1926 1927 1928 1929 1930
1931 1932 1933 1934 1935 1936 1937 1938 1939 1940
1941 1942 1943 1944 1945 1946 1947 1948 1949 1950
1951 1952 1953 1954 1955 1956 1957 1958 1959 1960
1961 1962 1963 1964 1965 1966 1967 1968 1969 1970
1971 1972 1973 1974 1975 1976 1977 1978 1979 1980
1981 1982 1983 1984 1985 1986 1987 1988 1989 1990
1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
2011 2012 2013 2014 2015 2016 2017 2018 2019 2020
2021 2022
More
San Francisco Records for Today
Weather Station Details
Years Station Coordinates
1921–2022 Downtown San Francisco location
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