San Luis Obispo March 21 Weather Records

Daily averages and all-time records for weather in San Luis Obispo, California for the date of March 21.
March 21 All-Time Records
1893–2024
Highest temperature 88 °F 1997
Lowest temperature 35 °F 2006
Lowest daily high 53 °F 1973
Highest daily low 62 °F 1931
Most precipitation 2.07 inches 2018
March 21 Average Weather
1991–2020 1
Average high 67.7 °F
Average low 45.2 °F
Chance precipitation 25.6%
San Luis Obispo March 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2024 70 45 0.00 n/a
2023 57 48 0.80 n/a
2022 74 49 0.00 n/a
2021 62 45 0.00 n/a
2020 62 49 0.00 n/a
2019 61 45 0.00 n/a
2018 62 54 2.07 0.0
2017 66 51 0.58 0.0
2016 67 55 0.02 0.0
2015 74 44 0.00 0.0
2014 65 49 0.00 0.0
2013 68 48 0.00 0.0
2012 74 45 0.00 0.0
2011 55 41 0.40 n/a
2010 68 38 0.01 n/a
2009 62 52 0.05 n/a
2008 74 49 0.00 n/a
2007 64 46 0.00 n/a
2006 57 35 0.06 n/a
2005 66 47 0.04 n/a
2004 66 53 0.00 n/a
2003 73 42 0.00 n/a
2002 70 37 0.00 n/a
2001 59 43 0.00 n/a
2000 73 35 0.00 n/a
1999 60 47 0.04 n/a
1998 68 48 0.00 0.0
1997 88 51 0.00 0.0
1996 75 51 0.00 0.0
1995 59 48 1.54 0.0
1994 72 42 0.00 0.0
1993 76 50 0.00 0.0
1992 64 47 0.35 0.0
1991 55 40 0.00 0.0
1990 84 46 0.00 0.0
1989 77 49 0.00 0.0
1988 83 45 0.00 0.0
1987 62 42 0.48 0.0
1986 75 39 0.00 0.0
1985 65 41 0.00 0.0
1984 81 50 0.00 0.0
1983 59 45 0.70 0.0
1982 62 n/a 0.00 0.0
1981 60 43 0.30 0.0
1980 68 41 n/a 0.0
1979 60 43 0.00 0.0
1978 66 52 0.00 0.0
1977 65 47 0.00 0.0
1976 72 46 0.00 0.0
1975 64 40 0.00 0.0
1974 60 49 0.00 0.0
1973 53 37 0.00 0.0
1972 66 51 0.00 0.0
1971 70 38 0.00 0.0
1970 72 42 0.00 0.0
1969 64 40 0.31 0.0
1968 71 40 0.00 0.0
1967 63 43 0.00 0.0
1966 70 44 0.00 0.0
1965 74 47 0.00 0.0
1964 60 44 0.00 0.0
1963 77 41 0.00 0.0
1962 57 46 0.03 0.0
1961 67 44 0.00 0.0
1960 70 46 0.00 0.0
1959 79 47 0.00 0.0
1958 58 49 0.90 0.0
1957 63 45 0.00 0.0
1956 75 47 0.00 0.0
1955 65 41 0.00 0.0
1954 58 38 0.15 0.0
1953 57 41 0.00 0.0
1952 59 39 0.00 0.0
1951 68 42 0.00 0.0
1950 67 42 0.00 0.0
1949 61 46 0.00 0.0
1948 68 42 0.00 0.0
1947 64 49 0.08 0.0
1946 55 40 0.00 0.0
1945 60 45 0.01 0.0
1944 64 47 0.00 0.0
1943 65 48 0.00 n/a
1942 73 37 0.00 n/a
1941 65 46 n/a n/a
1940 66 50 n/a n/a
1939 54 46 n/a n/a
1938 55 43 0.00 n/a
1937 58 38 0.02 n/a
1936 57 51 0.05 n/a
1935 54 42 0.43 n/a
1934 67 47 0.00 n/a
1933 69 42 0.00 n/a
1932 72 39 0.00 n/a
1931 85 62 0.00 n/a
1930 70 46 0.00 n/a
1929 72 46 0.00 n/a
1928 76 44 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 0.08 n/a
1909 n/a n/a 1.52 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 n/a n/a
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 0.25 n/a
What's the all-time high for San Luis Obispo on 3/21?
For the date of Mar 21, the highest temperature ever reached in San Luis Obispo history is 88 °F which happened in 1997.
Highest Temperatures in San Luis Obispo on March 21
Rank Temperature Year
1 88 °F 1997
2 85 °F 1931
3 84 °F 1990
4 83 °F 1988
5 81 °F 1984
6 79 °F 1959
7 77 °F 1989
7 77 °F 1963
9 76 °F 1993
9 76 °F 1928
What's the all-time low for San Luis Obispo on 3/21?
For the date of Mar 21, the lowest temperature ever reached in San Luis Obispo history is 35 °F which has happened 2 times, most recently in 2006.
Lowest Temperatures in San Luis Obispo on March 21
Rank Temperature Year
1 35 °F 2006
1 35 °F 2000
3 37 °F 1942
3 37 °F 2002
3 37 °F 1973
6 38 °F 2010
6 38 °F 1971
6 38 °F 1937
6 38 °F 1954
10 39 °F 1986
10 39 °F 1932
10 39 °F 1952
Lowest High Temperatures in San Luis Obispo on March 21
Rank Temperature Year
1 53 °F 1973
2 54 °F 1939
2 54 °F 1935
4 55 °F 1946
4 55 °F 2011
4 55 °F 1938
4 55 °F 1991
8 57 °F 1936
8 57 °F 1953
8 57 °F 1962
8 57 °F 2006
8 57 °F 2023
What's the most it has ever rained in San Luis Obispo on 3/21?
For the date of Mar 21, the most precipitation ever recorded in San Luis Obispo history is 2.07 inches which happened in 2018.
All-Time Most Precipitation in San Luis Obispo on March 21
Rank Precipitation Year
1 2.07 inches 2018
2 1.54 inches 1995
3 1.52 inches 1909
4 0.90 inches 1958
5 0.80 inches 2023
6 0.70 inches 1983
7 0.58 inches 2017
8 0.48 inches 1987
9 0.43 inches 1935
10 0.40 inches 2011
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