San Luis Obispo May 20 Weather Records

Daily averages and all-time records for weather in San Luis Obispo, California for the date of May 20.
May 20 All-Time Records
1893–2024
Highest temperature 94 °F 1942
Lowest temperature 36 °F 1974
Lowest daily high 60 °F 1974
Highest daily low 57 °F 1997
Most precipitation 0.30 inches 1961
May 20 Average Weather
1991–2020 1
Average high 72.4 °F
Average low 49.2 °F
Chance precipitation 7.5%
San Luis Obispo May 20 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 67 53 0.00 n/a
2022 70 47 0.00 n/a
2021 66 43 0.00 n/a
2020 71 47 0.00 0.0
2019 66 48 0.03 n/a
2018 67 52 0.00 0.0
2017 85 50 0.00 0.0
2016 66 54 0.00 0.0
2015 67 54 0.00 0.0
2014 68 53 0.00 0.0
2013 91 50 0.00 0.0
2012 85 46 0.00 0.0
2011 66 50 0.00 n/a
2010 74 50 0.00 n/a
2009 78 50 0.00 n/a
2008 71 50 0.00 n/a
2007 74 48 0.00 n/a
2006 73 49 0.00 n/a
2005 77 54 0.00 n/a
2004 68 49 0.00 n/a
2003 92 55 0.00 n/a
2002 65 53 0.18 n/a
2001 72 54 0.00 n/a
2000 84 50 0.00 n/a
1999 61 42 0.00 n/a
1998 68 46 0.00 0.0
1997 77 57 0.00 0.0
1996 70 50 0.00 0.0
1995 73 50 0.00 0.0
1994 66 44 0.00 0.0
1993 75 51 0.00 0.0
1992 73 50 0.00 0.0
1991 68 43 0.00 0.0
1990 69 46 0.00 0.0
1989 80 43 0.00 0.0
1988 n/a n/a n/a 0.0
1987 63 n/a 0.04 0.0
1986 75 47 0.00 0.0
1985 65 49 0.00 0.0
1984 n/a n/a 0.00 0.0
1983 82 49 0.00 0.0
1982 68 48 0.00 0.0
1981 65 45 0.00 0.0
1980 73 49 0.00 0.0
1979 68 52 0.00 0.0
1978 82 51 0.00 0.0
1977 74 47 0.00 0.0
1976 66 46 0.00 0.0
1975 69 46 0.00 0.0
1974 60 36 0.00 0.0
1973 67 51 0.00 0.0
1972 60 44 0.06 0.0
1971 71 45 0.00 0.0
1970 66 43 0.00 0.0
1969 76 49 0.00 0.0
1968 75 49 0.00 0.0
1967 74 48 0.00 0.0
1966 75 49 0.00 0.0
1965 74 49 0.00 0.0
1964 66 48 0.00 0.0
1963 65 52 0.00 0.0
1962 64 40 0.00 0.0
1961 66 52 0.30 0.0
1960 80 46 0.00 0.0
1959 72 42 0.00 0.0
1958 73 53 0.00 0.0
1957 64 49 0.00 0.0
1956 65 48 0.00 0.0
1955 84 47 0.00 0.0
1954 68 49 0.00 0.0
1953 71 48 0.00 0.0
1952 88 49 0.00 0.0
1951 70 50 0.00 0.0
1950 71 45 0.00 0.0
1949 64 43 0.00 0.0
1948 62 48 0.00 0.0
1947 73 47 0.00 0.0
1946 60 51 0.00 0.0
1945 68 46 0.00 0.0
1944 68 47 0.00 0.0
1943 74 45 0.00 n/a
1942 94 n/a 0.00 n/a
1941 87 50 n/a n/a
1940 67 50 0.00 n/a
1939 62 46 0.00 n/a
1938 64 41 n/a n/a
1937 75 46 0.00 n/a
1936 78 50 0.00 n/a
1935 83 47 0.00 n/a
1934 87 55 0.00 n/a
1933 73 43 0.00 n/a
1932 73 47 0.00 n/a
1931 86 52 0.00 n/a
1930 68 47 0.00 n/a
1929 68 40 0.00 n/a
1928 71 54 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 0.00 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 5/20?
For the date of May 20, the highest temperature ever reached in San Luis Obispo history is 94 °F which happened in 1942.
Highest Temperatures in San Luis Obispo on May 20
Rank Temperature Year
1 94 °F 1942
2 92 °F 2003
3 91 °F 2013
4 88 °F 1952
5 87 °F 1934
5 87 °F 1941
7 86 °F 1931
8 85 °F 2012
8 85 °F 2017
10 84 °F 2000
10 84 °F 1955
What's the all-time low for San Luis Obispo on 5/20?
For the date of May 20, the lowest temperature ever reached in San Luis Obispo history is 36 °F which happened in 1974.
Lowest Temperatures in San Luis Obispo on May 20
Rank Temperature Year
1 36 °F 1974
2 40 °F 1929
2 40 °F 1962
4 41 °F 1938
5 42 °F 1959
5 42 °F 1999
7 43 °F 1970
7 43 °F 2021
7 43 °F 1991
7 43 °F 1949
7 43 °F 1989
7 43 °F 1933
Lowest High Temperatures in San Luis Obispo on May 20
Rank Temperature Year
1 60 °F 1974
1 60 °F 1946
1 60 °F 1972
4 61 °F 1999
5 62 °F 1939
5 62 °F 1948
7 63 °F 1987
8 64 °F 1962
8 64 °F 1938
8 64 °F 1949
8 64 °F 1957
What's the most it has ever rained in San Luis Obispo on 5/20?
For the date of May 20, the most precipitation ever recorded in San Luis Obispo history is 0.30 inches which happened in 1961.
All-Time Most Precipitation in San Luis Obispo on May 20
Rank Precipitation Year
1 0.30 inches 1961
2 0.18 inches 2002
3 0.06 inches 1972
4 0.04 inches 1987
5 0.03 inches 2019
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.
© H Brothers Inc, 2021–2024
Contact us | Privacy policy