San Luis Obispo August 20 Weather Records

Daily averages and all-time records for weather in San Luis Obispo, California for the date of August 20.
August 20 All-Time Records
1893–2024
Highest temperature 95 °F 2023
Lowest temperature 47 °F 1990
Lowest daily high 69 °F 1983
Highest daily low 64 °F 2015
Most precipitation 1.01 inches 1976
August 20 Average Weather
1991–2020 1
Average high 80.3 °F
Average low 54.9 °F
Chance precipitation 1.1%
San Luis Obispo August 20 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 95 63 0.00 n/a
2022 73 54 0.00 n/a
2021 75 58 0.00 n/a
2020 90 58 0.00 0.0
2019 80 57 0.00 0.0
2018 78 58 0.00 0.0
2017 71 61 0.00 0.0
2016 77 58 0.00 0.0
2015 78 64 0.00 0.0
2014 77 59 0.00 0.0
2013 78 53 0.00 0.0
2012 81 53 0.00 0.0
2011 72 56 0.00 n/a
2010 74 51 0.00 n/a
2009 78 59 0.00 n/a
2008 87 56 0.00 n/a
2007 87 49 0.00 n/a
2006 76 58 0.00 n/a
2005 75 57 0.00 n/a
2004 75 57 0.00 n/a
2003 78 52 0.00 n/a
2002 74 50 0.00 n/a
2001 71 54 0.00 n/a
2000 73 49 0.00 n/a
1999 81 48 0.01 n/a
1998 84 52 0.00 0.0
1997 93 59 0.01 0.0
1996 75 50 0.00 0.0
1995 88 52 0.00 0.0
1994 85 50 0.00 0.0
1993 79 51 0.00 0.0
1992 84 49 0.00 0.0
1991 73 52 0.00 0.0
1990 75 47 0.00 0.0
1989 75 50 0.00 0.0
1988 75 52 0.00 0.0
1987 73 50 0.00 0.0
1986 90 55 0.00 0.0
1985 75 50 0.00 0.0
1984 83 58 0.00 0.0
1983 69 59 0.08 0.0
1982 80 53 0.00 0.0
1981 73 51 0.00 0.0
1980 74 52 0.00 0.0
1979 74 51 0.00 0.0
1978 n/a n/a n/a n/a
1977 80 53 0.00 0.0
1976 69 59 1.01 0.0
1975 72 52 0.00 0.0
1974 79 50 0.00 0.0
1973 88 50 0.00 0.0
1972 76 52 0.00 0.0
1971 75 54 0.00 0.0
1970 75 50 0.00 0.0
1969 81 50 0.00 0.0
1968 74 51 0.00 0.0
1967 83 55 0.00 0.0
1966 75 54 0.00 0.0
1965 77 53 0.00 0.0
1964 80 49 0.00 0.0
1963 94 54 0.00 0.0
1962 81 52 0.00 0.0
1961 87 60 0.00 0.0
1960 78 53 0.00 0.0
1959 70 50 0.00 0.0
1958 78 58 0.00 0.0
1957 85 48 0.00 0.0
1956 71 53 0.00 0.0
1955 74 50 0.00 0.0
1954 75 52 0.00 0.0
1953 75 49 0.00 0.0
1952 83 48 0.00 0.0
1951 73 54 0.00 0.0
1950 80 52 0.00 0.0
1949 74 50 0.00 0.0
1948 79 50 0.00 0.0
1947 76 49 0.00 0.0
1946 75 52 0.00 0.0
1945 79 53 0.00 0.0
1944 76 50 0.00 0.0
1943 72 48 0.00 n/a
1942 77 52 0.00 n/a
1941 73 51 0.00 n/a
1940 80 52 0.00 n/a
1939 77 59 0.00 n/a
1938 70 56 0.00 n/a
1937 78 53 0.00 n/a
1936 71 54 0.00 n/a
1935 76 49 0.00 n/a
1934 80 60 0.00 n/a
1933 72 52 0.00 n/a
1932 75 50 0.00 n/a
1931 78 50 0.00 n/a
1930 88 52 0.00 n/a
1929 83 52 0.00 n/a
1928 80 51 0.00 n/a
1927 n/a n/a n/a n/a
1926 n/a n/a n/a n/a
1925 n/a n/a n/a n/a
1924 n/a n/a n/a n/a
1923 n/a n/a n/a n/a
1922 n/a n/a n/a n/a
1921 n/a n/a n/a n/a
1920 n/a n/a n/a n/a
1919 n/a n/a n/a n/a
1918 n/a n/a n/a n/a
1917 n/a n/a n/a n/a
1916 n/a n/a n/a n/a
1915 n/a n/a n/a n/a
1914 n/a n/a n/a n/a
1913 n/a n/a n/a n/a
1912 n/a n/a n/a n/a
1911 n/a n/a n/a n/a
1910 n/a n/a n/a n/a
1909 n/a n/a n/a n/a
1908 n/a n/a n/a n/a
1907 n/a n/a 0.00 0.0
1906 n/a n/a 0.00 0.0
1905 n/a n/a n/a n/a
1904 n/a n/a n/a n/a
1903 n/a n/a n/a n/a
1902 n/a n/a n/a n/a
1901 n/a n/a n/a n/a
1900 n/a n/a n/a n/a
1899 n/a n/a n/a n/a
1898 n/a n/a n/a n/a
1897 n/a n/a n/a n/a
1896 n/a n/a n/a n/a
1895 n/a n/a 0.00 n/a
1894 n/a n/a 0.00 n/a
1893 n/a n/a 0.00 n/a
What's the all-time high for San Luis Obispo on 8/20?
For the date of Aug 20, the highest temperature ever reached in San Luis Obispo history is 95 °F which happened in 2023.
Highest Temperatures in San Luis Obispo on August 20
Rank Temperature Year
1 95 °F 2023
2 94 °F 1963
3 93 °F 1997
4 90 °F 1986
4 90 °F 2020
6 88 °F 1995
6 88 °F 1930
6 88 °F 1973
9 87 °F 1961
9 87 °F 2007
9 87 °F 2008
What's the all-time low for San Luis Obispo on 8/20?
For the date of Aug 20, the lowest temperature ever reached in San Luis Obispo history is 47 °F which happened in 1990.
Lowest Temperatures in San Luis Obispo on August 20
Rank Temperature Year
1 47 °F 1990
2 48 °F 1999
2 48 °F 1957
2 48 °F 1943
2 48 °F 1952
6 49 °F 1992
6 49 °F 1964
6 49 °F 2007
6 49 °F 1947
6 49 °F 1935
6 49 °F 1953
6 49 °F 2000
Lowest High Temperatures in San Luis Obispo on August 20
Rank Temperature Year
1 69 °F 1983
1 69 °F 1976
3 70 °F 1938
3 70 °F 1959
5 71 °F 2017
5 71 °F 1936
5 71 °F 1956
5 71 °F 2001
9 72 °F 1943
9 72 °F 1933
9 72 °F 2011
9 72 °F 1975
What's the most it has ever rained in San Luis Obispo on 8/20?
For the date of Aug 20, the most precipitation ever recorded in San Luis Obispo history is 1.01 inches which happened in 1976.
All-Time Most Precipitation in San Luis Obispo on August 20
Rank Precipitation Year
1 1.01 inches 1976
2 0.08 inches 1983
3 0.01 inches 1997
3 0.01 inches 1999
Weather Station Details
Years Station Coordinates
1999–2024 San Luis Obispo Airport location
1893–1998 San Luis Obispo Poly location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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