Number of Days of 90 °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 90 degrees Fahrenheit in San Luis Obispo, California, between 1893 and 2024.

Also see:

Which year had the most 90° days?

Based on NOAA records, the year 1996 holds the record for the most 90 °F days in San Luis Obispo history. There were 35 days with a high temperature of at least 90 degrees that year.

How many so far this year (2024)?

It has not reached 90 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 90° F was November 3, 2023.

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

Year	Rank	Days >= 90 °F
2024	98	0
2023	40	13
2022	24	16
2021	45	12
2020	3	30
2019	27	15
2018	27	15
2017	7	25
2016	8	23
2015	2	31
2014	24	16
2013	45	12
2012	65	9
2011	83	6
2010	45	12
2009	27	15
2008	6	26
2007	52	11
2006	71	8
2005	75	7
2004	52	11
2003	27	15
2002	40	13
2001	71	8
2000	75	7
1999	52	11
1998	16	18
1997	3	30
1996	1	35
1995	11	21
1994	52	11
1993	16	18
1992	23	17
1991	45	12
1990	60	10
1989	37	14
1988	37	14
1987	45	12
1986	83	6
1985	11	21
1984	9	22
1983	9	22
1982	90	5
1981	13	20
1980	45	12
1979	16	18
1978	27	15
1977	60	10
1976	27	15
1975	95	4
1974	90	5
1973	16	18
1972	60	10
1971	27	15
1970	16	18
1969	71	8
1968	71	8
1967	14	19
1966	27	15
1965	37	14
1964	65	9
1963	65	9
1962	75	7
1961	16	18
1960	52	11
1959	24	16
1958	27	15
1957	52	11
1956	40	13
1955	60	10
1954	75	7
1953	45	12
1952	90	5
1951	83	6
1950	40	13
1949	52	11
1948	90	5
1947	52	11
1946	65	9
1945	83	6
1944	97	3
1943	65	9
1942	83	6
1941	83	6
1940	65	9
1939	14	19
1938	75	7
1937	83	6
1936	40	13
1935	75	7
1934	27	15
1933	75	7
1932	90	5
1931	3	30
1930	60	10
1929	16	18
1928	75	7
1927	95	4
1926	98	0
1925	98	0
1924	98	0
1923	98	0
1922	98	0
1921	98	0
1920	98	0
1919	98	0
1918	98	0
1917	98	0
1916	98	0
1915	98	0
1914	98	0
1913	98	0
1912	98	0
1911	98	0
1910	98	0
1909	98	0
1908	98	0
1907	98	0
1906	98	0
1905	98	0
1904	98	0
1903	98	0
1902	98	0
1901	98	0
1900	98	0
1899	98	0
1898	98	0
1897	98	0
1896	98	0
1895	98	0
1894	98	0
1893	98	0

Weather Station Details

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