San Luis Obispo April 20 Weather Records

Daily averages and all-time records for weather in San Luis Obispo, California for the date of April 20.
April 20 All-Time Records
1893–2024
Highest temperature 101 °F 2009
Lowest temperature 31 °F 1972
Lowest daily high 54 °F 1968
Highest daily low 61 °F 2012
Most precipitation 0.52 inches 2010
April 20 Average Weather
1991–2020 1
Average high 70.7 °F
Average low 46.6 °F
Chance precipitation 15.5%
San Luis Obispo April 20 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2024 70 54 0.00 n/a
2023 77 52 0.00 n/a
2022 69 42 0.00 n/a
2021 65 44 0.00 n/a
2020 65 51 0.00 0.0
2019 62 48 0.00 n/a
2018 70 41 0.00 0.0
2017 75 53 0.00 0.0
2016 82 44 0.00 0.0
2015 67 51 0.00 0.0
2014 85 47 0.00 0.0
2013 87 45 0.00 0.0
2012 91 61 0.00 0.0
2011 68 49 0.00 n/a
2010 61 46 0.52 n/a
2009 101 54 0.00 n/a
2008 61 42 0.00 n/a
2007 60 43 0.44 n/a
2006 72 44 0.00 n/a
2005 66 38 0.00 n/a
2004 71 44 0.00 n/a
2003 70 41 0.00 n/a
2002 63 39 0.00 n/a
2001 58 41 0.34 n/a
2000 71 45 0.00 n/a
1999 68 48 0.00 n/a
1998 76 49 0.00 0.0
1997 71 53 0.00 0.0
1996 64 48 0.00 0.0
1995 61 38 0.00 0.0
1994 71 49 0.00 0.0
1993 80 45 0.00 0.0
1992 86 50 0.00 0.0
1991 64 48 0.10 0.0
1990 64 50 0.00 0.0
1989 73 49 0.00 0.0
1988 n/a n/a n/a n/a
1987 75 39 n/a 0.0
1986 85 54 0.00 0.0
1985 66 42 0.00 0.0
1984 58 46 0.00 0.0
1983 63 40 0.41 0.0
1982 83 54 0.00 0.0
1981 60 43 0.03 0.0
1980 81 49 0.00 0.0
1979 65 35 0.00 0.0
1978 65 47 0.00 0.0
1977 81 43 0.00 0.0
1976 80 51 0.00 0.0
1975 67 42 0.00 0.0
1974 59 43 0.00 0.0
1973 62 39 0.00 0.0
1972 64 31 0.00 0.0
1971 61 41 0.00 0.0
1970 62 45 0.00 0.0
1969 75 48 0.00 0.0
1968 54 45 0.00 0.0
1967 54 35 0.25 0.0
1966 62 43 0.00 0.0
1965 80 51 0.00 0.0
1964 60 45 0.00 0.0
1963 59 39 0.05 0.0
1962 61 47 0.02 0.0
1961 60 41 0.00 0.0
1960 74 51 0.00 0.0
1959 65 47 0.00 0.0
1958 86 61 0.00 0.0
1957 59 44 0.08 0.0
1956 69 41 0.00 0.0
1955 62 38 0.00 0.0
1954 66 48 0.00 0.0
1953 62 50 0.35 0.0
1952 80 43 0.00 0.0
1951 67 49 0.00 0.0
1950 72 49 0.00 0.0
1949 65 50 0.00 0.0
1948 58 46 0.00 0.0
1947 60 50 0.00 0.0
1946 73 49 0.00 0.0
1945 68 47 0.00 0.0
1944 61 42 0.01 0.0
1943 68 50 0.00 n/a
1942 74 50 0.00 n/a
1941 74 48 0.00 n/a
1940 76 52 n/a n/a
1939 64 46 0.00 n/a
1938 64 51 n/a n/a
1937 83 50 0.00 n/a
1936 61 48 0.00 n/a
1935 68 47 0.00 n/a
1934 68 49 0.00 n/a
1933 65 46 0.00 n/a
1932 63 34 0.00 n/a
1931 75 43 0.00 n/a
1930 79 52 0.00 n/a
1929 68 43 0.00 n/a
1928 67 47 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 0.00 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 4/20?
For the date of Apr 20, the highest temperature ever reached in San Luis Obispo history is 101 °F which happened in 2009.
Highest Temperatures in San Luis Obispo on April 20
Rank Temperature Year
1 101 °F 2009
2 91 °F 2012
3 87 °F 2013
4 86 °F 1958
4 86 °F 1992
6 85 °F 1986
6 85 °F 2014
8 83 °F 1937
8 83 °F 1982
10 82 °F 2016
What's the all-time low for San Luis Obispo on 4/20?
For the date of Apr 20, the lowest temperature ever reached in San Luis Obispo history is 31 °F which happened in 1972.
Lowest Temperatures in San Luis Obispo on April 20
Rank Temperature Year
1 31 °F 1972
2 34 °F 1932
3 35 °F 1967
3 35 °F 1979
5 38 °F 1955
5 38 °F 2005
5 38 °F 1995
8 39 °F 2002
8 39 °F 1973
8 39 °F 1987
8 39 °F 1963
Lowest High Temperatures in San Luis Obispo on April 20
Rank Temperature Year
1 54 °F 1967
1 54 °F 1968
3 58 °F 2001
3 58 °F 1984
3 58 °F 1948
6 59 °F 1957
6 59 °F 1974
6 59 °F 1963
9 60 °F 1981
9 60 °F 1964
9 60 °F 1947
9 60 °F 2007
9 60 °F 1961
What's the most it has ever rained in San Luis Obispo on 4/20?
For the date of Apr 20, the most precipitation ever recorded in San Luis Obispo history is 0.52 inches which happened in 2010.
All-Time Most Precipitation in San Luis Obispo on April 20
Rank Precipitation Year
1 0.52 inches 2010
2 0.44 inches 2007
3 0.41 inches 1983
4 0.35 inches 1953
5 0.34 inches 2001
6 0.25 inches 1967
7 0.10 inches 1991
8 0.08 inches 1957
9 0.05 inches 1963
10 0.03 inches 1981
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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