Riverside CA Highest Temperature Each Year

Here's where you'll find answers to questions about the highest temperatures and hottest days in Riverside, California. How hot did it get in 2017? When was the last time thermometers in Riverside rose above 110 °F? What was the highest temperature in Riverside a century ago? Answers to those questions and much more can be found quickly and easily in the list below of record high temperatures.

This page gives the highest temperature for each year in Riverside and the date that it happened. A date with a plus sign beside it means it was that hot on at least one other day earlier that year.

These records go back to 1902, with some years lacking data. The highest temperature recorded during that time there was 118 degrees Fahrenheit (48 Celsius) on July 17, 1925 and June 16, 1917.

Since 1999 the temperature extremes were measured at the Riverside Municipal Airport. Before then, the weather station was near downtown Riverside.

Highest Riverside temperatures in recent years
Max °F	Date	Max °C
106	August 29, 2023 +	41
110	September 04, 2022	43
107	September 05, 2021	42
117	September 06, 2020 +	47
107	June 11, 2019	42
112	September 01, 2017 +	44
114	June 20, 2016	46
108	August 15, 2015	42
108	September 16, 2014 +	42
–	2013	–
107	October 01, 2012	42
108	August 27, 2011	42
–	2010	–

Highest temperature recorded at Riverside each year
Max °F	Date	Max °C
108	August 29, 2009 +	42
–	2008	–
–	2007	–
113	July 22, 2006	45
103	August 28, 2005 +	39
105	September 01, 2004	41
106	September 21, 2003 +	41
110	September 01, 2002	43
108	September 30, 2001	42
–	2000	–
105	August 25, 1999	41
112	August 29, 1998	44
113	August 05, 1997	45
107	October 07, 1996 +	42
112	July 27, 1995	44
110	August 12, 1994	43
109	June 24, 1993	43
–	1992	–
106	October 10, 1991	41
111	June 26, 1990	44
–	1989	–
111	September 03, 1988	44
108	October 04, 1987	42
105	August 20, 1986 +	41
110	August 25, 1985	43
111	September 05, 1984	44
109	August 06, 1983	43
111	September 02, 1982	44
110	August 27, 1981	43
109	October 01, 1980 +	43
111	September 09, 1979	44
108	July 15, 1978	42
106	July 26, 1977	41
109	June 27, 1976	43
105	August 07, 1975	41
106	June 28, 1974	41
109	June 21, 1973	43
109	July 31, 1972 +	43
113	September 13, 1971	45
106	August 07, 1970 +	41
107	August 22, 1969 +	42
105	September 09, 1968	41
–	1967	–
103	September 23, 1966	39
106	August 09, 1965	41
104	August 08, 1964 +	40
106	September 28, 1963 +	41
104	August 25, 1962 +	40
–	1961	–
110	July 20, 1960	43
111	July 24, 1959	44
107	July 10, 1958	42
108	July 04, 1957	42
108	August 23, 1956	42
115	September 06, 1955	46
106	July 16, 1954	41
–	1953	–
103	September 05, 1952	39
106	September 14, 1951	41
108	August 18, 1950	42
109	September 24, 1949 +	43
109	September 10, 1948 +	43
107	September 01, 1947 +	42
108	September 13, 1946	42
105	September 04, 1945 +	41
112	August 26, 1944	44
–	1943	–
108	May 20, 1942	42
104	August 13, 1941	40
107	August 20, 1940	42
107	September 22, 1939 +	42
109	September 14, 1938	43
107	September 16, 1937	42
112	July 18, 1936	44
108	July 16, 1935	42
–	1934	–
111	July 27, 1933	44
–	1932	–
108	August 24, 1931	42
–	1930	–
–	1929	–
–	1928	–
110	July 18, 1927	43
113	August 24, 1926	45
118	July 17, 1925	48
106	September 29, 1924 +	41
108	September 08, 1923	42
112	September 17, 1922	44
111	September 27, 1921	44
106	August 13, 1920 +	41
106	July 23, 1919	41
110	August 03, 1918	43
118	June 16, 1917	48
105	September 14, 1916 +	41
108	August 19, 1915 +	42
104	June 26, 1914	40
111	September 17, 1913	44
106	September 18, 1912	41
110	August 31, 1911	43
110	September 09, 1910	43
107	August 29, 1909	42
108	July 31, 1908	42
–	1907	–
105	August 14, 1906 +	41
106	August 29, 1905	41
110	September 07, 1904	43
105	August 18, 1903	41
105	June 23, 1902	41

Riverside - Highest Temperature for Each Year

Reference

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