Riverside, CA: Fall

9 October 2026: Fall 2026 so far averaged 79.6°F in Riverside, CA, the warmest 1 September to 9 October since 2022, 4th warmest of 119.

Fall 2026 so far, to 9 October 2026

Mean temperature: 79.6°F; Warmest since 2022; 4th warmest of 119
Precipitation: 0.36 in; Wettest since 2015; 23rd wettest of 111

A normal 1 September to 9 October in Riverside, CA (1991 to 2020): 0.00 in of precipitation, between 0.00 in and 0.34 in in eight years of ten.

The mean temperature of every 1 September to 9 October in Riverside, CA since 1893: 79.6°F in 2026; the highest is 80.2°F, in 2022.

Every year, ranked, as a table

Every 1 September 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	79.6	4	93.2	18	66.1	2	0.36	23	0
2025	75.9	17	88.5	83	63.4	9	0.11	44	0
2024	78.5	9	94.1	10	62.9	10	trace	69	0
2023	73.8	48	86.3	106	61.3	19	0.31	24	0
2022	80.2	1	93.4	16	66.9	1	0.14	43	0
2021	75.8	18	89.8	58	61.7	15	0.21	32	0
2020	80	2	96.6	2	63.5	8	0.00	80	0
2019	75.7	23	90.8	45	60.6	25	0.01	65	0
2018	75.6	25	89.6	66	61.6	17	0.30	25	0
2017	75.2	30	88.7	78	61.7	15	0.22	31	0
2016	75.6	25	89.9	54	61.2	20	trace	69	0
2015	78.9	7	92	29	65.9	3	2.03	4	0
2014	79.4	5	94.1	10	64.8	5	0.23	30	0
2013	75.8	18	89.7	62	61.9	13	0.30	25	0
2012	79.9	3	94.7	7	65.1	4	trace	69	0
2011	74.2	42	88.1	89	60.3	28	0.50	19	0
2010	74.9	32	89.9	54	59.8	34	0.06	50	0
2009	76.3	14	91.2	39	61.4	18	0.00	80	0
2008							0.00	80	11
2007							0.18	38	7
2006							0.00	80	4
2005							0.00	80	10
2004							0.00	80	6
2003					61.9	13	0.00	80	6
2002	75.8	18	91.2	39	60	32	0.00	80	1
2001	75.7	23	91.5	36	60.1	30	0.00	80	2
2000			89.8	58			0.05	54	4
1999	73.9	47	89.7	62	58.1	44	0.00	80	0
1998	73.1	56	86.1	110	60.3	28	0.00	80	3
1997	78.9	7	93.4	16	64.3	6	0.66	14	0
1996			91.9	31			0.00	80	4
1995	77.6	13	94.1	10	61.2	20	0.00	80	0
1994	74.5	37	89.8	58	59.2	39	0.09	47	1
1993	75.8	18	91.8	32	59.8	34	0.00	80	3
1992									31
1991	78.1	10	93.9	14	62.2	12	trace	69	0
1990	76.3	14	91.7	34	60.9	24	0.00	80	1
1989	74.8	33	92.2	25	57.3	48	0.39	22	2
1988	74.5	37	90.1	51	59.3	37	0.05	54	2
1987	77.7	12	94.4	9	61.1	22	0.19	35	0
1986	68	115	83.9	120	52.1	92	0.30	25	1
1985	71.9	68	86.7	102	57	50	0.29	28	1
1984	79.1	6	94.8	6	63.7	7	0.16	41	2
1983	75.8	18	89.1	75	62.7	11	2.29	2	1
1982	73.5	52	88	91	59.1	40	0.74	11	1
1981	73.8	48	88.1	89	59.6	36	0.54	17	0
1980	74.6	36	91	42	58.2	42	0.00	80	0
1979	78.1	10	95.6	5	60.5	26	trace	69	0
1978	74.8	33	89.5	69	60.1	30	1.15	7	0
1977	72.7	60	87.6	94	57.8	45	0.00	80	0
1976	72.6	61	84.7	118	60.4	27	2.08	3	0
1975	74.3	40	90.8	45	57.8	45	0.06	50	0
1974	74	44	88.7	78	59.3	37	0.01	65	1
1973	68.3	111	82.2	122	54.4	68	0.02	59	0
1972	71.3	76	85.2	115	57.4	47	0.01	65	0
1971	74	44	91	42	56.9	53	0.00	80	0
1970	71.8	69	89.9	54	53.6	75	0.02	59	0
1969	73.1	56	89.8	58	56.4	55	0.00	80	0
1968	71.4	73	86.3	106	56.5	54	0.06	50	0
1967	74.4	39	88.3	85	61	23	0.06	50	2
1966	73.1	56	89.1	75	57.1	49	0.19	35	2
1965	70.2	97	86.2	108	54.3	72	0.74	11	0
1964	72.6	61	90.6	49	54.7	66	0.21	32	1
1963	75.3	29	90.7	48	60	32	3.91	1	0
1962	71.8	69	88.6	82	54.9	62	0.00	80	0
1961	71	85	87.5	95	54.4	68	0.00	80	2
1960	76	16	92.9	21	59.1	40	trace	69	0
1959	70.7	92	85.9	111	55.6	58	0.02	59	0
1958	75.4	28	93.9	14	57	50	0.26	29	1
1957	70.8	90	88.2	88	53.5	78	0.00	80	1
1956	74.8	33	93.2	18	56.3	56	0.19	35	1
1955	74.3	40	94.1	10	54.3	72	0.00	80	2
1954	70.8	90	89.7	62	51.9	94	0.00	80	0
1953	71.4	73	91.4	37	51.4	99	0.00	80	0
1952	74.1	43	92.8	22	55.3	59	0.51	18	0
1951	71.4	73	90.3	50	52.5	89	0.18	38	0
1950	68.4	109	87.1	97	49.8	112	0.03	57	0
1949	70.6	95	90.1	51	51.2	100	0.02	59	0
1948	71.8	69	92.2	25	51.5	98	0.00	80	0
1947			92.7	23			0.03	57	5
1946	72.3	65	92	29	52.6	87	0.16	41	0
1945	73.4	54	91.2	39	55.7	57	0.09	47	0
1944	71.2	80	88.7	78	53.7	74	0.00	80	0
1943	75.5	27	95.8	4	55.2	61	0.00	80	0
1942	70.9	88	89.7	62	52.2	91	0.00	80	0
1941	68	115	85.6	113	50.5	108	0.00	80	0
1940	71.2	80	89.6	66	52.7	86	0.00	80	0
1939	73.8	48	89.3	73	58.2	42	1.23	6	0
1938	73.6	51	92.2	25	54.9	62	0.00	80	0
1937	73.3	55	91.8	32	54.8	65	0.02	59	0
1936	72.5	63	91.7	34	53.3	81	trace	69	0
1935	71.2	80	89.6	66	52.8	85	0.05	54	0
1934	72	67	90.8	45	53.3	81	0.17	40	1
1933	69.5	101	87.5	95	51.6	97	0.01	65	1
1932	71.1	83	88.5	83	53.6	75	0.67	13	0
1931	70.3	96	87.1	97	53.6	75	0.60	16	0
1930	68.4	109	86.2	108	50.6	105	0.10	45	0
1929	71	85	86.6	103	55.3	59	0.63	15	0
1928	72.1	66	92.2	25	51.7	95	trace	69	1
1927	68.3	111	85.4	114	51.2	100	trace	69	0
1926	70.7	92	90.9	44	50.6	105			0
1925	69.4	103	88.7	78	50.1	111			0
1924	71.8	69	92.6	24	51	104			0
1923	71.3	76	87.9	93	54.6	67			0
1922	75.1	31	95.9	3	54.4	68			0
1921	71.1	83	89.4	72	52.6	87			2
1920	70	99	88.3	85	51.7	95			0
1919	69.2	104	88.3	85	50.4	109			1
1918	72.4	64	88	91	57	50			1
1917	73.5	52	97.4	1	49.7	115			0
1916	66.1	119	84.8	116	47.4	120	1.89	5	0
1915	68.7	107	89.1	75	48.3	118			0
1914	70.7	92	87.1	97	54.4	68	0.41	21	0
1913	73	59	93.1	20	53	84			0
1912	68.2	113	86.6	103	49.7	115	0.79	8	0
1911	69.1	105	89.9	54	48.4	117	0.75	10	0
1910	74	44	94.5	8	53.5	78	0.02	59	0
1909	69.5	101	85.7	112	53.3	81			0
1908	71.3	76	89.2	74	53.5	78	0.77	9	0
1907	68.8	106	86.4	105	51.2	100	0.10	45	0
1906	70.1	98	89.5	69	50.6	105			0
1905	69.6	100	89.5	69	49.8	112	0.08	49	1
1904	70.9	88	86.8	101	54.9	62	0.20	34	2
1903	68.1	114	83.9	120	52.3	90	0.48	20	0
1902	68.7	107	87	100	50.4	109	trace	69	1
1901	66.3	118	84.6	119	48.1	119	trace	69	3
1895	71	85	90	53	52.1	92			0
1894	71.3	76	91.4	37	51.1	103			0
1893	67.3	117	84.8	116	49.8	112			0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2022	80.2
2020	80
2012	79.9
2026	79.6
2014	79.4
1984	79.1
2015	78.9
1997	78.9
2024	78.5
1991	78.1
More years share the last value

Coldest
Year	Mean, °F
1916	66.1
1901	66.3
1893	67.3
1986	68
1941	68
1903	68.1
1912	68.2
1973	68.3
1927	68.3
1950	68.4
More years share the last value

Wettest
Year	Precipitation, in
1963	3.91
1983	2.29
1976	2.08
2015	2.03
1916	1.89
1939	1.23
1978	1.15
1912	0.79
1908	0.77
1911	0.75

Driest
Year	Precipitation, in
2020	0.00
2009	0.00
2008	0.00
2006	0.00
2005	0.00
2004	0.00
2003	0.00
2002	0.00
2001	0.00
1999	0.00
More years share the last value

The hottest, coldest and wettest days

Hottest day: 110°F; 9 September 2026
Coldest night: 59°F; 29 September 2026, 5 September 2026
Wettest day: 0.35 in; 6 September 2026

Every month, season and year

Months

Seasons

Years

Riverside, CA the day's answers

All-time records

Every answer in words

Fall 2026 so far brought 0.36 in of precipitation in Riverside, CA, the wettest 1 September to 9 October since 2015, 23rd wettest of 111.
The hottest day of fall 2026 so far in Riverside, CA: 110°F on Wednesday 9 September 2026.
The coldest night of fall 2026 so far in Riverside, CA: a low of 59°F on Tuesday 29 September 2026 and Saturday 5 September 2026.
The wettest day of fall 2026 so far in Riverside, CA: 0.35 in on Sunday 6 September 2026.