San Luis Obispo September 9 Weather Records

Daily averages and all-time records for weather in San Luis Obispo, California for the date of September 9.
September 9 All-Time Records
1893–2024
Highest temperature 101 °F 1984
Lowest temperature 44 °F 1964
Lowest daily high 67 °F 1964
Highest daily low 70 °F 1984
Most precipitation 0.04 inches 1985
September 9 Average Weather
1991–2020 1
Average high 80.3 °F
Average low 53.9 °F
Chance precipitation 1.7%
San Luis Obispo September 9 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 90 61 0.02 n/a
2022 94 65 0.00 n/a
2021 88 59 0.00 n/a
2020 70 54 0.00 0.0
2019 78 54 0.00 0.0
2018 81 53 0.00 0.0
2017 82 61 0.00 0.0
2016 78 54 0.00 0.0
2015 98 62 0.00 0.0
2014 78 48 0.00 0.0
2013 79 55 0.00 0.0
2012 79 55 0.00 0.0
2011 75 53 0.00 n/a
2010 70 49 0.00 n/a
2009 82 55 0.00 n/a
2008 74 59 0.00 n/a
2007 77 52 0.00 n/a
2006 72 58 0.00 n/a
2005 72 58 0.00 n/a
2004 89 58 0.00 n/a
2003 78 48 0.00 n/a
2002 95 52 0.00 n/a
2001 72 50 0.00 n/a
2000 76 52 0.00 n/a
1999 75 52 0.00 n/a
1998 89 57 0.00 0.0
1997 88 58 n/a n/a
1996 85 n/a 0.00 0.0
1995 77 52 0.00 0.0
1994 79 51 0.00 0.0
1993 85 52 0.00 0.0
1992 80 47 0.00 0.0
1991 77 55 0.00 0.0
1990 90 n/a 0.00 0.0
1989 72 52 0.00 0.0
1988 76 52 n/a n/a
1987 98 55 0.00 0.0
1986 n/a n/a 0.00 0.0
1985 71 51 0.04 0.0
1984 101 70 0.00 0.0
1983 74 54 0.00 0.0
1982 83 54 0.00 0.0
1981 82 54 0.00 0.0
1980 69 56 0.00 0.0
1979 97 n/a 0.00 0.0
1978 82 54 0.00 0.0
1977 80 45 0.00 0.0
1976 99 63 0.00 0.0
1975 78 53 0.02 0.0
1974 84 52 0.00 0.0
1973 78 52 0.00 0.0
1972 75 58 0.00 0.0
1971 92 54 0.00 0.0
1970 80 51 0.00 0.0
1969 79 54 0.00 0.0
1968 76 51 0.00 0.0
1967 80 54 0.00 0.0
1966 78 51 0.00 0.0
1965 75 52 0.00 0.0
1964 67 44 0.00 0.0
1963 77 51 0.00 0.0
1962 71 50 0.00 0.0
1961 74 48 0.00 0.0
1960 74 50 0.00 0.0
1959 78 56 0.00 0.0
1958 80 58 0.00 0.0
1957 85 55 0.00 0.0
1956 85 49 0.00 0.0
1955 79 48 0.00 0.0
1954 89 49 0.00 0.0
1953 72 50 0.00 0.0
1952 77 49 0.00 0.0
1951 87 51 0.00 0.0
1950 74 55 0.00 0.0
1949 82 51 0.00 0.0
1948 77 50 0.00 0.0
1947 75 48 0.00 0.0
1946 70 46 0.00 0.0
1945 77 55 0.00 0.0
1944 98 55 0.00 0.0
1943 78 53 0.00 0.0
1942 73 54 0.00 n/a
1941 77 51 0.00 n/a
1940 75 55 0.00 n/a
1939 80 54 0.00 n/a
1938 75 52 n/a n/a
1937 80 53 0.00 n/a
1936 82 57 0.00 n/a
1935 69 53 0.00 n/a
1934 76 48 0.00 n/a
1933 70 46 0.00 n/a
1932 78 49 0.00 n/a
1931 76 52 0.00 n/a
1930 73 48 0.00 n/a
1929 79 49 0.00 n/a
1928 71 45 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 9/9?
For the date of Sep 9, the highest temperature ever reached in San Luis Obispo history is 101 °F which happened in 1984.
Highest Temperatures in San Luis Obispo on September 9
Rank Temperature Year
1 101 °F 1984
2 99 °F 1976
3 98 °F 1987
3 98 °F 1944
3 98 °F 2015
6 97 °F 1979
7 95 °F 2002
8 94 °F 2022
9 92 °F 1971
10 90 °F 2023
10 90 °F 1990
What's the all-time low for San Luis Obispo on 9/9?
For the date of Sep 9, the lowest temperature ever reached in San Luis Obispo history is 44 °F which happened in 1964.
Lowest Temperatures in San Luis Obispo on September 9
Rank Temperature Year
1 44 °F 1964
2 45 °F 1977
2 45 °F 1928
4 46 °F 1933
4 46 °F 1946
6 47 °F 1992
7 48 °F 1955
7 48 °F 1961
7 48 °F 1930
7 48 °F 1934
7 48 °F 2014
7 48 °F 2003
7 48 °F 1947
Lowest High Temperatures in San Luis Obispo on September 9
Rank Temperature Year
1 67 °F 1964
2 69 °F 1980
2 69 °F 1935
4 70 °F 2020
4 70 °F 1933
4 70 °F 1946
4 70 °F 2010
8 71 °F 1985
8 71 °F 1962
8 71 °F 1928
What's the most it has ever rained in San Luis Obispo on 9/9?
For the date of Sep 9, the most precipitation ever recorded in San Luis Obispo history is 0.04 inches which happened in 1985.
All-Time Most Precipitation in San Luis Obispo on September 9
Rank Precipitation Year
1 0.04 inches 1985
2 0.02 inches 1975
2 0.02 inches 2023
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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