Riverside, CA: August

31 August 2026: August 2026 averaged 84.4°F in Riverside, CA, the warmest August on record, in 123 years since 1894 (1896 excluded: 31 of 31 days missing; 1897 excluded: 31 of 31 days missing; 1898 excluded: 31 of 31 days missing; 7 more years excluded for missing days); provisional.

August 2026

Mean temperature: 84.4°F; Warmest on record; Warmest of 123, provisional
Precipitation: 0.00 in; Ties the record; Driest of 109, provisional

A normal August in Riverside, CA (1991 to 2020): a mean temperature of 80.5°F, between 78.1°F and 82.9°F in eight years of ten and 0.00 in of precipitation, between 0.00 in and 0.15 in in eight years of ten.

The mean temperature of every August in Riverside, CA since 1894: 84.4°F in 2026, the highest of them all.

Normal range, 78.1 to 82.9°F

Every year, ranked, as a table

Every August in Riverside, CA from 1894 to 2026, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.

Year	Mean, °F	Rank	High, °F	Rank	Low, °F	Rank	Precipitation, in	Rank	Days missing
2026	84.4	1	99.1	3	69.6	2	0.00	49	0
2025	81	20	96.2	31	65.7	16	trace	37	0
2024	81.2	15	97.3	19	65.2	22	trace	37	0
2023	80.9	21	95.9	36	65.9	13	1.99	4	0
2022	83	5	97.5	17	68.5	3	0.00	49	0
2021	80.1	27	94.3	66	65.9	13	trace	37	0
2020	82.8	6	98	10	67.6	4	0.00	49	0
2019	80.5	23	97.1	23	63.8	32	0.00	49	0
2018	81.4	14	95.4	50	67.5	5	0.00	49	0
2017	81.1	17	95.8	38	66.5	11	0.28	12	0
2016	80.5	23	95.5	45	65.6	18	0.00	49	0
2015	81.5	12	95.5	45	67.4	6	0.01	34	0
2014	79.4	31	93.4	78	65.4	21	0.14	15	0
2013	79.4	31	94.2	68	64.5	26	0.06	23	0
2012	83.8	3	97.9	12	69.7	1	0.01	34	0
2011	79.4	31	95.3	53	63.5	34	0.00	49	0
2010	78.2	47	93.6	73	62.8	42	0.00	49	0
2009	78.8	41	94.3	66	63.4	35	0.00	49	0
2008							0.00	49	6
2007					66.9	9	trace	37	4
2006	79	37	94.6	62	63.3	36	0.00	49	1
2005	79.2	34	94.7	59	63.8	32	0.90	6	2
2004	77.4	60	91.8	111	63	38	0.00	49	2
2003	82	11	97.8	13	66.2	12	0.00	49	0
2002	77.1	65	92.5	100	61.8	50	0.00	49	1
2001			96.1	32			0.00	49	4
2000	81.5	12	97.3	19	65.6	18	0.00	49	0
1999	78.5	43	95.2	55	61.8	50	0.00	49	1
1998	84.3	2	101.4	1	67.3	8	0.20	13	0
1997	81.1	17	96.9	24	65.2	22	0.00	49	0
1996	82.1	10	99.1	3	65.2	22	0.00	49	2
1995	82.5	7	99.8	2	65	25	0.00	49	2
1994	82.5	7	99.1	3	65.8	15	0.00	49	1
1993	78.4	45	93.9	71	62.9	39	0.00	49	1
1992	83.1	4	98.7	7	67.4	6	0.00	49	1
1991	78	49	93.3	82	62.7	43	0.00	49	1
1990	78.7	42	93	90	64.4	27	0.00	49	0
1989	76	81	90.8	119	61.2	56	0.00	49	0
1988	78.2	47	93.3	82	63.2	37	0.00	49	0
1987	77.5	56	93.3	82	61.6	55			0
1986	79.7	29	98.6	9	60.7	58	0.00	49	0
1985	77.7	54	95.8	38	59.9	64	0.00	49	1
1984	80.8	22	96	34	65.6	18	trace	37	0
1983	81.2	15	95.7	43	66.7	10	2.33	1	2
1982	80	28	96	34	64	31	0.03	27	3
1981	81.1	17	97.8	13	64.4	27	0.00	49	1
1980	78.4	45	93.9	71	62.9	39	0.00	49	0
1979	77.3	63	92.1	107	62.6	46	0.03	27	0
1978	76.6	71	92.8	94	60.6	60	0.01	34	1
1977	78.5	43	92.8	94	64.1	30	2.14	2	0
1976	75.1	96	91.8	111	58.5	79	0.00	49	1
1975	75.5	89	93.3	82	57.7	85	0.00	49	0
1974	75.7	85	91.7	114	59.7	68	0.00	49	0
1973	76.2	78	91.9	108	60.5	61	0.00	49	0
1972	77.5	56	92.9	91	62.2	48	0.38	10	0
1971	80.4	25	96.5	28	64.3	29	0.00	49	0
1970	79.1	35	96.1	32	62.2	48	0.12	17	0
1969	80.2	26	97.6	15	62.7	43	0.00	49	1
1968	75.4	91	90.9	118	59.8	65	0.16	14	1
1967	82.3	9	98.7	7	65.7	16	0.43	9	1
1966	78.9	38	95.4	50	62.4	47	0.04	25	0
1965	78.9	38	95	58	62.9	39	0.10	20	0
1964	76.3	77	91.8	111	60.8	57	0.00	49	0
1963	76.2	78	92.7	99	59.7	68	0.11	18	0
1962	76.8	69	95.8	38	57.7	85	0.00	49	0
1961	78	49	93.2	86	62.7	43	0.13	16	0
1960	76.4	75	92.9	91	59.8	65	0.00	49	0
1959	76	81	92.5	100	59.6	70	0.02	30	0
1958	77.3	63	92.8	94	61.8	50	0.45	8	0
1957	76.9	66	94.6	62	59.3	72	0.00	49	0
1956	73.1	115	90	121	56.3	104	0.00	49	2
1955	79.5	30	97.6	15	61.7	53	trace	37	1
1954	74.2	106	90.5	120	58.1	82	trace	37	1
1953	72.4	119	91.1	116	53.7	117	0.07	21	0
1952	75.7	85	93.6	73	57.8	83	trace	37	0
1951	73.1	115	91.1	116	55.1	109	0.02	30	0
1950	72	121	93.2	86	50.7	124	0.00	49	0
1949	73.6	113	93.4	78	53.9	116	0.00	49	0
1948	72.3	120	92.8	94	52.1	123	0.00	49	1
1947			92.3	105			trace	37	7
1946	75.9	83	95.8	38	56.1	105	0.00	49	0
1945	76.9	66	94.7	59	59	75	1.01	5	0
1944	75.6	88	96.9	24	54.3	113	0.00	49	0
1943	75.2	94	93.5	76	56.9	95	0.00	49	0
1942	75.7	85	94.1	69	57.2	92	0.11	18	0
1941	73.8	111	89.8	122	57.8	83	0.30	11	0
1940	75.9	83	94.5	64	57.3	91	0.00	49	0
1939	77.4	60	95.5	45	59.2	74	trace	37	0
1938	78	49	95.8	38	60.2	63	0.00	49	0
1937	76.9	66	95.2	55	58.6	77	0.00	49	0
1936	77.5	56	95.6	44	59.3	72	0.03	27	0
1935	77.5	56	95.5	45	59.6	70	2.04	3	0
1934	75.3	92	93.6	73	57	94	0.02	30	0
1933	75	99	92.5	100	57.5	90	0.07	21	0
1932	74.1	108	93.1	89	55	111	0.00	49	0
1931	77.8	53	94	70	61.7	53	0.78	7	0
1930	76.5	73	95.3	53	57.6	89	0.00	49	0
1929	79.1	35	97.4	18	60.7	58	0.00	49	0
1928	74.1	108	92.4	104	55.9	107	0.00	49	0
1927	76.5	73	96.4	30	56.6	100	0.00	49	0
1926	77.9	52	97.2	21	58.6	77			0
1925	74.9	100	95.9	36	54	114			0
1924	75.2	94	95.4	50	55.1	109			0
1923	74.9	100	93.4	78	56.5	101			0
1922	78.9	38	98	10	59.8	65			0
1921	76.6	71	96.5	28	56.8	97			0
1920	76.8	69	95.5	45	58.2	81			0
1919	74.8	104	94.7	59	55	111			0
1918	75.1	96	92.8	94	57.7	85			2
1917	74.1	108	95.1	57	53.1	119			0
1916	73.1	115	93.4	78	52.9	121			0
1915	76.2	78	99	6	53.5	118			0
1914	74.6	105	92.5	100	56.7	98	0.00	49	0
1913	77.7	54	97.2	21	58.3	80	0.04	25	0
1912	71.7	122	91.2	115	52.3	122	0.05	24	0
1911	74.9	100	96.6	27	53.1	119	0.00	49	0
1910	76.4	75	96.7	26	56.1	105	0.00	49	0
1909	75.3	92	91.9	108	58.7	76			0
1908	75.5	89	93.2	86	57.7	85	0.02	30	0
1907	73.1	115	89.7	123	56.5	101			0
1906	73.3	114	89.4	124	57.2	92			0
1905	73.7	112	92.2	106	55.2	108	0.00	49	0
1904	77.4	60	94.5	64	60.3	62	trace	37	0
1903	74.2	106	91.9	108	56.5	101	trace	37	0
1902	71	123	88.1	125	54	114	0.00	49	0
1901									8
1895	75.1	96	93.5	76	56.7	98			0
1894	74.9	100	92.9	91	56.9	95			2

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2026	84.4
1998	84.3
2012	83.8
1992	83.1
2022	83
2020	82.8
1995	82.5
1994	82.5
1967	82.3
1996	82.1

Coldest
Year	Mean, °F
1902	71
1912	71.7
1950	72
1948	72.3
1953	72.4
1956	73.1
1951	73.1
1916	73.1
1907	73.1
1906	73.3

Wettest
Year	Precipitation, in
1983	2.33
1977	2.14
1935	2.04
2023	1.99
1945	1.01
2005	0.90
1931	0.78
1958	0.45
1967	0.43
1972	0.38

Driest
Year	Precipitation, in
2026	0.00
2022	0.00
2020	0.00
2019	0.00
2018	0.00
2016	0.00
2011	0.00
2010	0.00
2009	0.00
2008	0.00
More years share the last value

The hottest, coldest and wettest days

Hottest day: 107°F; 26 August 2026
Coldest night: 64°F; 15 August 2026

Every month, season and year

Months

Seasons

Years

Riverside, CA the day's answers

All-time records

Every answer in words

August 2026 brought 0.00 in of precipitation in Riverside, CA, tying the record for the driest August, set in 2022, 2020, 2019 and 57 other years, in 109 years since 1902 (1906 excluded: 29 of 31 days missing; 1907 excluded: 31 of 31 days missing; 1909 excluded: 29 of 31 days missing; 13 more years excluded for missing days); provisional.
The hottest day of August 2026 in Riverside, CA: 107°F on Wednesday 26 August 2026.
The coldest night of August 2026 in Riverside, CA: a low of 64°F on Saturday 15 August 2026.