Number of Days of 90 °F in Riverside 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 Riverside, California, between 1893 and 2024.

Also see:

Which year had the most 90° days?

Based on NOAA records, the year 1917 holds the record for the most 90 °F days in Riverside history. There were 146 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 Riverside so far in 2024. As of April 29, the highest temperature this year is 89 °F.

The last time it reached at least 90° F was October 21, 2023.

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

Year	Rank	Days >= 90 °F
2024	127	0
2023	105	80
2022	15	112
2021	19	110
2020	4	123
2019	49	98
2018	25	108
2017	7	118
2016	10	114
2015	25	108
2014	6	119
2013	84	89
2012	28	106
2011	63	95
2010	114	74
2009	41	102
2008	77	91
2007	126	27
2006	75	92
2005	87	88
2004	77	91
2003	13	113
2002	93	84
2001	77	91
2000	71	93
1999	67	94
1998	98	83
1997	19	110
1996	15	112
1995	28	106
1994	40	103
1993	84	89
1992	98	83
1991	71	93
1990	10	114
1989	36	104
1988	28	106
1987	49	98
1986	43	101
1985	28	106
1984	2	125
1983	93	84
1982	114	74
1981	15	112
1980	59	96
1979	43	101
1978	36	104
1977	87	88
1976	98	83
1975	87	88
1974	71	93
1973	112	76
1972	93	84
1971	46	99
1970	28	106
1969	111	77
1968	77	91
1967	36	104
1966	28	106
1965	101	82
1964	67	94
1963	118	70
1962	75	92
1961	71	93
1960	24	109
1959	52	97
1958	63	95
1957	77	91
1956	63	95
1955	67	94
1954	101	82
1953	109	78
1952	84	89
1951	109	78
1950	113	75
1949	59	96
1948	90	86
1947	52	97
1946	19	110
1945	92	85
1944	117	71
1943	27	107
1942	59	96
1941	116	73
1940	34	105
1939	19	110
1938	34	105
1937	13	113
1936	10	114
1935	104	81
1934	52	97
1933	105	80
1932	107	79
1931	67	94
1930	59	96
1929	93	84
1928	90	86
1927	36	104
1926	2	125
1925	63	95
1924	5	122
1923	77	91
1922	8	116
1921	19	110
1920	93	84
1919	41	102
1918	52	97
1917	1	146
1916	52	97
1915	18	111
1914	45	100
1913	52	97
1912	107	79
1911	49	98
1910	9	115
1909	119	68
1908	83	90
1907	120	65
1906	101	82
1905	123	58
1904	52	97
1903	122	63
1902	124	51
1901	125	40
1900	127	0
1899	127	0
1898	127	0
1897	127	0
1896	127	0
1895	46	99
1894	46	99
1893	121	64

Weather Station Details

Years	Station	Coordinates
1999–2024	Riverside Municipal Airport	location
1893–1998	Riverside Fire Station	location