Number of Days of 100 °F in San Luis Obispo by Year

This page contains a list of the number of days in each year that the high temperature equaled or exceeded 100 degrees Fahrenheit in San Luis Obispo, California, between 1893 and 2024.

Also see:

Which year had the most 100° days?

Based on NOAA records, the year 2020 holds the record for the most 100 °F days in San Luis Obispo history. There were 7 days with a high temperature of at least 100 degrees that year.

How many so far this year (2024)?

It has not reached 100 degrees Fahrenheit in San Luis Obispo so far in 2024. As of April 29, the highest temperature this year is 86 °F.

The last time it reached at least 100° F was October 6, 2023.

Years marked with a gold background have more than 5% incomplete data
Click column headers to sort

Year	Rank	Days >= 100 °F
2024	61	0
2023	6	4
2022	17	3
2021	39	1
2020	1	7
2019	32	2
2018	39	1
2017	2	6
2016	6	4
2015	6	4
2014	17	3
2013	39	1
2012	39	1
2011	32	2
2010	6	4
2009	4	5
2008	32	2
2007	39	1
2006	61	0
2005	39	1
2004	6	4
2003	61	0
2002	61	0
2001	61	0
2000	61	0
1999	61	0
1998	32	2
1997	17	3
1996	2	6
1995	61	0
1994	39	1
1993	6	4
1992	61	0
1991	39	1
1990	39	1
1989	17	3
1988	39	1
1987	17	3
1986	61	0
1985	6	4
1984	6	4
1983	32	2
1982	61	0
1981	17	3
1980	17	3
1979	32	2
1978	4	5
1977	39	1
1976	6	4
1975	39	1
1974	61	0
1973	17	3
1972	61	0
1971	6	4
1970	39	1
1969	39	1
1968	32	2
1967	61	0
1966	61	0
1965	61	0
1964	61	0
1963	39	1
1962	17	3
1961	17	3
1960	61	0
1959	17	3
1958	61	0
1957	61	0
1956	61	0
1955	17	3
1954	61	0
1953	39	1
1952	61	0
1951	61	0
1950	39	1
1949	39	1
1948	17	3
1947	61	0
1946	61	0
1945	61	0
1944	39	1
1943	39	1
1942	61	0
1941	61	0
1940	61	0
1939	17	3
1938	61	0
1937	61	0
1936	39	1
1935	61	0
1934	61	0
1933	61	0
1932	61	0
1931	17	3
1930	39	1
1929	6	4
1928	61	0
1927	61	0
1926	61	0
1925	61	0
1924	61	0
1923	61	0
1922	61	0
1921	61	0
1920	61	0
1919	61	0
1918	61	0
1917	61	0
1916	61	0
1915	61	0
1914	61	0
1913	61	0
1912	61	0
1911	61	0
1910	61	0
1909	61	0
1908	61	0
1907	61	0
1906	61	0
1905	61	0
1904	61	0
1903	61	0
1902	61	0
1901	61	0
1900	61	0
1899	61	0
1898	61	0
1897	61	0
1896	61	0
1895	61	0
1894	61	0
1893	61	0

Weather Station Details

Years	Station	Coordinates
1999–2024	San Luis Obispo Airport	location
1893–1998	San Luis Obispo Poly	location