Riverside, CA: 2026

9 October 2026: 2026 so far averaged 71.8°F in Riverside, CA, the warmest 1 January to 9 October on record, in 116 years since 1894 (1896 excluded: 252 of 283 days missing; 1897 excluded: 282 of 282 days missing; 1898 excluded: 282 of 282 days missing; 14 more years excluded for missing days); provisional.

2026 so far, to 9 October 2026

Mean temperature: 71.8°F; Warmest on record; Warmest of 116, provisional
Precipitation: 3.93 in; Driest since 2022; 25th driest of 104

A normal 1 January to 9 October in Riverside, CA (1991 to 2020): 5.96 in of precipitation, between 2.23 in and 14.31 in in eight years of ten.

The mean temperature of every 1 January to 9 October in Riverside, CA since 1894: 71.8°F in 2026, the highest of them all.

Every year, ranked, as a table

Every 1 January to 9 October in Riverside, CA from 1893 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	71.8	1	85.5	2	58.1	1	3.93	80	0
2025	68.4	22	81.5	52	55.4	12	4.40	74	0
2024	68.1	26	81	65	55.2	16	11.26	18	0
2023	65.9	59	78	116	53.8	29	12.15	14	0
2022	70.7	4	84.5	5	57	4	0.97	100	0
2021	68.7	21	82.3	34	55.2	16	3.43	84	0
2020	69.4	12	83	21	55.8	10	6.43	51	0
2019	67.1	34	79.9	90	54.3	24	10.15	25	0
2018	69.7	9	83.1	19	56.3	6	4.52	72	0
2017	69.3	13	82.4	32	56.2	7	8.46	34	0
2016	70.2	6	83.7	9	56.7	5	4.28	75	0
2015	70.8	3	83.9	8	57.8	2	6.50	50	0
2014	71	2	84.7	4	57.3	3	2.09	95	0
2013	69	15	82.3	34	55.6	11	2.71	91	6
2012	69.6	10	83.4	14	55.9	9	2.86	89	1
2011	67.1	34	80.2	82	54	27	5.05	67	0
2010	66.8	40	80	87	53.7	30	8.50	32	1
2009	68.2	23	81.6	49	54.9	18	3.08	88	0
2008							2.32	93	81
2007							0.48	104	46
2006									74
2005							13.16	11	56
2004							5.96	55	41
2003	69.1	14	83	21	55.3	14	10.09	26	28
2002							0.69	102	56
2001									63
2000	69.6	10	83.6	12	55.4	12	5.96	55	16
1999	66.9	38	81.1	62	52.7	36	4.17	78	18
1998	67	37	80.2	82	54.1	25	16.91	3	14
1997	70.4	5	84.3	7	56.2	7	4.45	73	17
1996	69.9	7	84.9	3	54.9	18	5.83	57	16
1995	68.2	23	81.8	45	54.5	21	16.03	7	10
1994	68.8	20	83.1	19	54.4	22	8.02	38	14
1993	69	15	82.6	28	55.3	14	16.06	5	24
1992									36
1991	67.5	28	82.1	39	53	35	10.70	21	5
1990	68.9	19	83.3	15	54.6	20	5.36	63	4
1989							2.21	94	34
1988	69	15	84.4	6	53.7	30	4.67	71	7
1987	68.2	23	83.2	18	53.2	34			6
1986	67.3	30	83.3	15	51.4	47	7.75	42	2
1985	66.9	38	82.6	28	51.2	48	2.69	92	5
1984	69.8	8	85.8	1	53.9	28	0.69	102	7
1983	67.3	30	80.7	75	54.1	25	19.07	1	10
1982	66.1	57	79.6	95	52.7	36	10.70	21	18
1981	69	15	83.6	12	54.4	22	5.97	54	5
1980	67.8	27	82	41	53.5	32	14.17	10	3
1979	67.2	32	81.8	45	52.5	38	10.78	20	1
1978	67.5	28	81.7	47	53.4	33	18.27	2	1
1977	66.4	47	81.3	58	51.6	43	7.38	45	2
1976	66.4	47	81.2	59	51.5	46	7.84	40	5
1975	65	72	79.9	90	50.1	65	5.19	65	0
1974	66.7	42	81	65	52.4	39	6.17	53	2
1973	64.8	77	78.7	112	50.7	58	6.94	49	1
1972	66.8	40	82	41	51.6	43	0.92	101	1
1971	66	58	80.9	73	51	52	1.65	98	3
1970	66.4	47	81.9	44	51	52	5.02	68	4
1969	65.9	59	79.4	100	52.3	40	16.52	4	3
1968	66.7	42	81.6	49	51.9	41	4.72	70	3
1967	66.2	54	81	65	51.6	43	6.25	52	9
1966	66.2	54	81.4	56	51.1	50	2.80	90	5
1965	64.7	83	79.2	103	50	66	7.27	46	7
1964	64.4	90	80	87	48.8	77	3.50	83	2
1963	64.9	74	79.6	95	50.6	60	9.41	30	11
1962	64.7	83	79.9	90	49.5	71	7.09	47	2
1961	66.5	46	82.1	39	50.8	56	1.33	99	14
1960	67.1	34	82.3	34	51.8	42	5.50	61	3
1959	66.6	44	82.3	34	50.8	56	3.35	85	2
1958	65.9	59	80.7	75	51.1	50	11.74	16	4
1957	65.7	62	80.5	80	51	52	8.12	37	8
1956	65.3	68	81.1	62	49.4	73	7.70	43	13
1955	64.5	88	81.1	62	48.1	90	5.69	58	9
1954	64.5	88	80	87	49.1	74	8.29	36	3
1953	62.7	110	79.6	95	46	113	3.35	85	5
1952	63.4	104	78.4	114	48.4	83	11.54	17	2
1951	63.4	104	79.5	99	47.3	105	4.26	76	0
1950	62.1	116	79.2	103	45.1	116	4.91	69	0
1949	62.2	115	78.4	114	46.1	112	5.18	66	0
1948			81	65			4.23	77	37
1947			83	21			1.77	97	42
1946	65	72	82.3	34	47.7	97	3.81	81	0
1945	64.1	94	79.6	95	48.3	86	7.65	44	4
1944	63.3	107	78.9	108	47.7	97	8.48	33	0
1943	66.3	52	82.7	25	49.8	67	9.75	29	10
1942	64.8	77	81.5	52	48.1	90	1.84	96	0
1941	64.7	83	79.2	103	50.2	62	16.06	5	0
1940	66.4	47	82.5	30	50.3	61	8.75	31	1
1939	65.2	70	80.9	73	49.5	71	6.99	48	0
1938	65.3	68	81	65	49.6	69	14.28	9	1
1937	64.1	94	79.9	90	48.3	86	11.98	15	0
1936	66.4	47	82.5	30	50.2	62	7.80	41	0
1935	63.4	104	78.9	108	48	94	10.03	27	0
1934	66.3	52	83	21	49.7	68	3.25	87	5
1933	62.6	112	79	107	46.2	111	5.65	59	2
1932	63.1	109	78.7	112	47.4	103	8.45	35	1
1931	66.6	44	82	41	51.2	48	11.20	19	0
1930	63.8	99	80.1	84	47.6	100	12.46	12	6
1929	63.7	100	78.9	108	48.6	79	5.23	64	14
1928	65.1	71	81.6	49	48.5	81	4.02	79	6
1927	64.9	74	80.7	75	49	75	9.92	28	2
1926	67.2	32	83.7	9	50.7	58			0
1925	65.5	64	82.7	25	48.3	86			0
1924	65.5	64	83.3	15	47.7	97			0
1923	64.8	77	81.4	56	48.3	86			0
1922	64.9	74	81.2	59	48.4	83			1
1921	64.8	77	81	65	48.6	79			2
1920	64.4	90	80.7	75	48.1	90			0
1919	64.8	77	82.4	32	47.2	106			16
1918	65.5	64	81.5	52	49.6	69			8
1917	65.4	67	83.7	9	46.8	107			5
1916	64.1	94	81.7	47	46.4	110			2
1915	64.7	83	81	65	48.5	81			0
1914	66.2	54	81.2	59	51	52	12.44	13	4
1913	64.4	90	81.5	52	47.4	103			0
1912	63.2	108	79.8	94	46.5	109	7.94	39	0
1911	64.2	93	80.1	84	47.5	101	10.55	23	13
1910	65.7	62	82.7	25	48.7	78	3.67	82	0
1909	63.9	97	77.6	118	50.2	62			0
1908	63.9	97	80.3	81	47.5	101			0
1907	63.6	102	78.8	111	48.4	83			1
1906	63.6	102	79.3	101	47.8	96			2
1905	63.7	100	79.2	103	48.1	90	15.21	8	2
1904	64.6	87	81	65	48	94	5.51	60	4
1903	62.3	114	78	116	46.6	108	10.40	24	2
1902	62.6	112	79.3	101	45.8	114	5.38	62	7
1901									223
1896									252
1895	64.8	77	80.6	79	48.9	76			1
1894	62.7	110	80.1	84	45.4	115			11
1893									32

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2026	71.8
2014	71
2015	70.8
2022	70.7
1997	70.4
2016	70.2
1996	69.9
1984	69.8
2018	69.7
2012	69.6
More years share the last value

Coldest
Year	Mean, °F
1950	62.1
1949	62.2
1903	62.3
1933	62.6
1902	62.6
1953	62.7
1894	62.7
1932	63.1
1912	63.2
1944	63.3

Wettest
Year	Precipitation, in
1983	19.07
1978	18.27
1998	16.91
1969	16.52
1993	16.06
1941	16.06
1995	16.03
1905	15.21
1938	14.28
1980	14.17

Driest
Year	Precipitation, in
2007	0.48
2002	0.69
1984	0.69
1972	0.92
2022	0.97
1961	1.33
1971	1.65
1947	1.77
1942	1.84
2014	2.09

The hottest, coldest and wettest days

Hottest day: 110°F; 9 September 2026
Coldest night: 37°F; 21 February 2026
Wettest day: 0.76 in; 16 February 2026

Month by month

Month	Mean temperature	Precipitation
January	59.3°F 5th warmest of 114	0.75 in 39th driest of 119
February	60.9°F 5th warmest of 111	2.02 in 44th wettest of 109
March	70.5°F Warmest of 113	0.08 in 11th driest of 114
April	65.2°F 15th warmest of 116	0.61 in 46th wettest of 112
May	68.1°F 22nd warmest of 120	0.11 in 52nd wettest of 121
June	73.8°F 28th warmest of 118	0.00 in Driest of 109
July	81.2°F 10th warmest of 118	a trace 40th wettest of 121
August	84.4°F Warmest of 123	0.00 in Driest of 109
September	78.1°F 11th warmest of 122	0.36 in 18th wettest of 121
October so far	84.9°F Warmest of 113	0.00 in Driest of 114

Hot days and freezes

Riverside, CA has had 112 days at 90°F or above in 2026 through 9 October, the most by that date since 1984 (1989 excluded: 33 of 282 days missing; 1992 excluded: 36 of 283 days missing; 2001 excluded: 56 of 282 days missing; 6 more years excluded for missing days), tied 4th most of 118 (with 1910).
Riverside, CA has had 38 days at 100°F or above in 2026 through 9 October, the most by that date since 2024, 4th most of 118.

Daily records set

Date	Record	Value	Before	Check
29 March	Warmest day	94°F	93°F 2004	Provisional
28 March	Warmest day	92°F	91°F 1968, 1917	Provisional
21 March	Warmest day	93°F	92°F 1931	Provisional
20 March	Warmest day	102°F	97°F 1997	Provisional
19 March	Warmest day	101°F	98°F 1997	Provisional
18 March	Warmest day	98°F	93°F 1914	Provisional
17 March	Warmest day	101°F	92°F 2004, 1914	Provisional
16 March	Warmest day	95°F	94°F 2007	Provisional
27 February	Warmest day	93°F	87°F 1972, 1926	Provisional

Daily records set and not listed: 0

Every month, season and year

Months

Seasons

Years

2025
2026

Riverside, CA the day's answers

All-time records

Every answer in words

2026 so far brought 3.93 in of precipitation in Riverside, CA, the driest 1 January to 9 October since 2022, 25th driest of 104.
The hottest day of 2026 so far in Riverside, CA: 110°F on Wednesday 9 September 2026.
The coldest night of 2026 so far in Riverside, CA: a low of 37°F on Saturday 21 February 2026.
The wettest day of 2026 so far in Riverside, CA: 0.76 in on Monday 16 February 2026.