Average May Temperature in Riverside by Year

This page contains a list of the average monthly high and low temperatures in Riverside, California for the month of May each year between 1893 and 2023. It is based on NOAA data.

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What Was the Hottest May Ever in Riverside?

1997 was the warmest May in the history of Riverside, California. The average daily high temperature was 88.8 °F, and the average low was 59.8 °F.

What Was the Coldest May Ever in Riverside?

1953 was the coolest May in the history of Riverside, California. The average daily high temperature was 74.6 °F, and the average low was 43.2 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2023	77	75.6	54.1
2022	22	81.0	55.0
2021	32	79.8	55.2
2020	4	85.6	57.0
2019	99	73.9	52.6
2018	53	77.5	55.1
2017	23	80.9	55.0
2016	42	78.1	56.1
2015	68	76.0	55.2
2014	3	85.5	58.0
2013	6	83.9	57.8
2012	11	83.1	55.9
2011	66	78.1	53.2
2010	69	78.4	52.6
2009	9	83.1	57.2
2007	52	80.1	52.6
2006	41	79.8	54.5
2005	34	81.2	53.8
2004	15	83.4	54.7
2003	56	80.5	51.8
2002	75	79.2	50.9
2001	17	83.9	53.9
2000	14	83.6	54.8
1999	82	76.9	51.8
1998	91	74.8	52.6
1997	1	88.8	59.8
1996	8	84.4	56.2
1995	84	74.9	53.4
1994	74	76.8	53.3
1993	7	84.7	56.6
1992	5	82.8	59.2
1991	67	79.8	51.5
1990	25	81.0	54.4
1989	20	82.4	54.6
1988	12	84.6	53.8
1987	10	83.3	56.8
1986	24	84.3	51.2
1985	58	81.4	50.8
1984	2	90.5	53.9
1983	21	83.0	53.4
1982	51	78.7	54.1
1981	19	81.5	55.6
1980	92	76.0	51.1
1979	31	81.6	53.7
1978	13	85.4	53.0
1977	114	74.4	50.3
1976	18	83.4	53.7
1975	65	81.0	50.5
1974	49	79.1	53.9
1973	39	82.3	52.2
1972	35	82.6	52.4
1971	107	75.8	50.1
1970	38	82.9	51.9
1969	37	80.5	54.5
1968	47	80.9	52.7
1967	60	80.9	51.2
1966	50	79.8	53.2
1965	78	78.3	51.0
1964	100	78.5	47.9
1963	83	76.8	51.6
1962	95	77.3	49.5
1961	98	77.0	49.5
1960	30	83.2	52.1
1959	89	77.0	50.7
1958	33	82.4	52.7
1957	104	75.4	50.8
1956	59	79.7	52.4
1955	88	78.3	49.6
1954	55	79.9	52.5
1953	124	74.6	43.2
1952	54	82.5	49.9
1951	96	79.4	47.4
1950	119	75.7	45.0
1949	90	78.2	49.4
1948	94	79.5	47.5
1947	48	81.2	52.1
1946	101	76.5	49.9
1945	109	78.0	47.6
1944	81	78.6	50.3
1943	63	82.4	49.4
1942	79	80.9	48.1
1941	36	82.6	52.4
1940	16	86.0	52.2
1939	70	81.1	49.9
1938	86	79.4	48.8
1937	57	80.5	51.7
1936	45	83.0	50.7
1935	117	74.6	48.0
1934	28	85.3	50.1
1933	123	74.2	44.4
1932	80	79.2	49.7
1931	29	81.1	54.3
1930	120	75.5	44.7
1929	71	81.0	49.5
1928	46	80.1	53.6
1927	61	83.4	48.5
1926	40	83.4	50.9
1925	72	79.4	51.1
1924	26	83.5	52.0
1923	43	84.2	50.0
1922	64	82.8	48.9
1921	116	72.4	50.6
1920	76	80.2	49.7
1919	62	78.4	53.5
1918	110	77.4	48.2
1917	112	77.2	47.9
1916	106	81.2	44.7
1915	113	77.0	47.6
1914	102	75.3	50.9
1913	97	79.7	47.0
1912	87	80.0	48.1
1911	103	80.3	45.9
1910	44	84.0	50.0
1909	105	75.5	50.5
1908	118	76.9	45.5
1907	93	77.9	49.2
1906	122	71.5	48.2
1905	121	74.3	45.8
1904	85	77.8	50.6
1903	108	75.0	50.6
1902	115	78.0	45.9
1895	27	83.0	52.4
1894	111	79.3	46.2
1893	73	81.4	48.7

Weather Station Details

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