San Luis Obispo December 9 Weather Records

Daily averages and all-time records for weather in San Luis Obispo, California for the date of December 9.
December 9 All-Time Records
1893–2024
Highest temperature 86 °F 1975
Lowest temperature 28 °F 2013
Lowest daily high 47 °F 1932
Highest daily low 59 °F 2016
Most precipitation 0.98 inches 2006
December 9 Average Weather
1991–2020 1
Average high 66.0 °F
Average low 41.7 °F
Chance precipitation 26.1%
San Luis Obispo December 9 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 74 45 0.00 n/a
2022 63 38 0.00 n/a
2021 60 43 0.05 n/a
2020 80 40 0.00 0.0
2019 68 44 0.00 0.0
2018 69 40 0.00 0.0
2017 84 41 0.00 0.0
2016 70 59 0.01 0.0
2015 79 49 0.00 0.0
2014 74 48 0.00 0.0
2013 60 28 0.00 0.0
2012 70 48 0.00 0.0
2011 68 31 0.00 0.0
2010 67 46 0.00 n/a
2009 56 30 0.00 n/a
2008 69 39 0.00 n/a
2007 63 41 0.00 n/a
2006 64 53 0.98 n/a
2005 65 41 0.00 n/a
2004 70 49 0.01 n/a
2003 67 32 0.24 n/a
2002 61 43 0.01 n/a
2001 55 38 0.00 n/a
2000 61 48 0.00 n/a
1999 53 32 0.08 n/a
1998 63 43 0.00 0.0
1997 55 41 0.13 0.0
1996 69 46 0.00 0.0
1995 75 44 0.00 0.0
1994 58 39 0.00 0.0
1993 68 47 0.02 0.0
1992 63 46 0.10 0.0
1991 60 48 0.00 0.0
1990 80 40 0.00 0.0
1989 81 39 0.00 0.0
1988 75 n/a n/a n/a
1987 60 43 0.29 0.0
1986 67 37 0.00 0.0
1985 60 34 0.00 0.0
1984 65 42 0.00 0.0
1983 68 44 0.27 0.0
1982 62 n/a 0.00 0.0
1981 68 45 0.00 0.0
1980 61 42 0.00 0.0
1979 69 41 0.00 0.0
1978 55 30 0.00 0.0
1977 76 44 0.00 0.0
1976 71 38 0.00 0.0
1975 86 42 0.00 0.0
1974 70 40 0.00 0.0
1973 69 50 0.00 0.0
1972 48 31 0.00 0.0
1971 56 32 0.00 0.0
1970 61 42 0.22 0.0
1969 54 43 0.09 0.0
1968 67 35 0.00 0.0
1967 56 44 0.00 0.0
1966 59 41 0.00 0.0
1965 61 41 0.00 0.0
1964 69 50 0.00 0.0
1963 76 42 0.15 0.0
1962 61 40 0.00 0.0
1961 61 39 0.00 0.0
1960 57 32 0.00 0.0
1959 75 40 0.00 0.0
1958 70 47 0.00 0.0
1957 73 52 0.00 0.0
1956 63 43 0.00 0.0
1955 69 43 0.04 0.0
1954 61 42 0.00 0.0
1953 61 45 0.00 0.0
1952 62 44 0.00 0.0
1951 56 34 0.00 0.0
1950 67 41 0.00 0.0
1949 63 50 0.03 0.0
1948 64 50 0.00 0.0
1947 59 40 0.00 0.0
1946 58 44 0.00 0.0
1945 62 47 0.00 0.0
1944 68 41 0.00 0.0
1943 68 40 0.00 0.0
1942 60 42 0.00 n/a
1941 58 47 0.09 n/a
1940 64 49 n/a n/a
1939 66 47 0.02 n/a
1938 68 50 n/a n/a
1937 60 47 0.01 n/a
1936 69 52 n/a n/a
1935 67 41 0.00 n/a
1934 76 56 0.00 n/a
1933 68 47 0.00 n/a
1932 47 37 0.18 n/a
1931 58 39 0.10 n/a
1930 73 38 0.00 n/a
1929 59 43 0.00 n/a
1928 67 36 0.00 n/a
1927 54 34 0.48 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 0.00 n/a
1915 n/a n/a n/a n/a
1914 n/a n/a 0.00 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 0.00 n/a
1908 n/a n/a 0.00 n/a
1907 n/a n/a 0.00 n/a
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 0.75 n/a
1893 n/a n/a 0.00 n/a
What's the all-time high for San Luis Obispo on 12/9?
For the date of Dec 9, the highest temperature ever reached in San Luis Obispo history is 86 °F which happened in 1975.
Highest Temperatures in San Luis Obispo on December 9
Rank Temperature Year
1 86 °F 1975
2 84 °F 2017
3 81 °F 1989
4 80 °F 2020
4 80 °F 1990
6 79 °F 2015
7 76 °F 1934
7 76 °F 1977
7 76 °F 1963
10 75 °F 1959
10 75 °F 1988
10 75 °F 1995
What's the all-time low for San Luis Obispo on 12/9?
For the date of Dec 9, the lowest temperature ever reached in San Luis Obispo history is 28 °F which happened in 2013.
Lowest Temperatures in San Luis Obispo on December 9
Rank Temperature Year
1 28 °F 2013
2 30 °F 2009
2 30 °F 1978
4 31 °F 1972
4 31 °F 2011
6 32 °F 1960
6 32 °F 1999
6 32 °F 1971
6 32 °F 2003
10 34 °F 1951
10 34 °F 1927
10 34 °F 1985
Lowest High Temperatures in San Luis Obispo on December 9
Rank Temperature Year
1 47 °F 1932
2 48 °F 1972
3 53 °F 1999
4 54 °F 1927
4 54 °F 1969
6 55 °F 2001
6 55 °F 1978
6 55 °F 1997
9 56 °F 1967
9 56 °F 2009
9 56 °F 1951
9 56 °F 1971
What's the most it has ever rained in San Luis Obispo on 12/9?
For the date of Dec 9, the most precipitation ever recorded in San Luis Obispo history is 0.98 inches which happened in 2006.
All-Time Most Precipitation in San Luis Obispo on December 9
Rank Precipitation Year
1 0.98 inches 2006
2 0.75 inches 1894
3 0.48 inches 1927
4 0.29 inches 1987
5 0.27 inches 1983
6 0.24 inches 2003
7 0.22 inches 1970
8 0.18 inches 1932
9 0.15 inches 1963
10 0.13 inches 1997
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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