Average December Temperature in San Jacinto by Year

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

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What Was the Hottest December Ever in San Jacinto?

2017 was the warmest December in the history of San Jacinto, California. The average daily high temperature was 74.4 °F, and the average low was 41.5 °F.

What Was the Coldest December Ever in San Jacinto?

1904 was the coolest December in the history of San Jacinto, California. The average daily high temperature was 57.6 °F, and the average low was 31.1 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2023	4	70.1	43.2
2022	33	63.6	42.1
2021	39	63.5	41.2
2020	13	68.9	39.8
2019	29	62.9	43.2
2018	16	65.9	41.9
2017	1	74.4	41.5
2016	24	63.3	43.5
2015	62	63.6	38.4
2014	17	65.2	42.6
2013	22	69.3	37.6
2012	27	64.2	42.2
2011	66	66.0	35.5
2010	28	64.3	41.9
2009	65	62.9	38.9
2007	79	63.6	35.9
2006	32	69.3	36.6
2000	11	72.5	37.2
1999	30	70.3	35.8
1998	55	66.5	36.5
1997	73	64.3	36.1
1994	53	66.2	36.8
1993	51	68.8	34.7
1992	96	62.5	34.6
1990	81	67.1	32.0
1987	111	60.0	32.2
1986	34	69.0	36.3
1983	40	65.6	39.0
1982	100	63.4	33.3
1981	15	71.5	36.7
1980	2	75.2	40.0
1979	7	74.7	37.3
1978	104	61.5	34.2
1977	6	70.5	42.0
1976	64	71.6	30.4
1975	57	69.7	33.0
1974	88	65.4	32.4
1973	58	68.8	33.9
1972	86	64.1	34.3
1971	113	58.9	32.6
1970	93	63.0	34.5
1969	59	68.0	34.6
1968	98	64.8	32.2
1967	109	61.9	32.7
1966	61	66.5	35.6
1965	74	63.6	36.3
1964	70	65.1	35.8
1963	56	73.4	29.4
1962	25	74.0	32.7
1961	60	67.1	35.4
1960	87	68.4	30.0
1959	44	67.4	36.7
1958	12	75.3	33.8
1957	41	67.5	37.0
1956	52	71.3	31.9
1955	67	64.2	37.1
1953	108	66.9	27.8
1952	106	61.6	33.8
1951	105	60.6	34.8
1949	78	66.5	33.2
1947	84	65.1	33.7
1946	38	67.3	37.4
1945	71	64.7	36.0
1944	54	65.3	37.7
1943	75	60.6	39.3
1942	50	67.6	36.0
1941	91	61.4	36.3
1940	20	67.6	39.8
1939	9	73.6	36.3
1938	8	72.5	38.1
1937	10	72.1	37.7
1936	45	68.0	36.2
1935	49	69.4	34.4
1934	18	68.0	39.5
1933	14	72.1	36.3
1932	90	63.4	34.2
1931	103	61.7	34.5
1930	69	70.9	30.2
1929	3	78.0	36.5
1928	76	66.5	33.3
1927	82	63.0	36.0
1926	92	61.7	35.9
1925	26	69.3	37.2
1924	72	65.8	34.8
1923	42	67.1	37.4
1922	36	63.2	41.6
1921	21	66.4	41.0
1920	107	61.2	34.1
1919	43	67.2	37.3
1918	99	63.1	33.8
1917	5	76.5	36.6
1916	102	64.3	32.0
1915	48	67.7	36.1
1914	110	58.3	34.4
1913	83	62.8	36.1
1912	68	69.0	32.2
1911	94	65.6	31.8
1910	19	71.4	36.0
1909	101	60.5	35.9
1908	80	66.7	32.8
1907	23	71.0	35.8
1906	37	66.8	38.1
1905	89	64.8	33.0
1904	114	57.6	31.1
1902	77	64.4	35.4
1901	31	71.4	34.7
1900	46	68.1	35.8
1899	47	65.7	38.1
1898	97	63.6	33.4
1897	112	63.6	28.7
1896	63	65.3	36.7
1895	95	66.0	31.1
1894	85	59.9	38.9
1893	35	69.4	35.8

Weather Station Details

Years	Station	Coordinates
1978–2024	San Jacinto	location
1893–1978	San Jacinto	location