Average December Temperature in St. Helena by Year

This page contains a list of the average monthly high and low temperatures in St. Helena, California for the month of December each year between 1907 and 2022. It is based on NOAA data.

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What Was the Hottest December Ever in St. Helena?

2014 was the warmest December in the history of St. Helena, California. The average daily high temperature was 58.8 °F, and the average low was 47.0 °F.

What Was the Coldest December Ever in St. Helena?

1948 was the coolest December in the history of St. Helena, California. The average daily high temperature was 51.3 °F, and the average low was 32.7 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2022	57	57.1	37.4
2021	69	54.1	39.2
2018	8	60.1	41.3
2017	4	64.8	38.1
2016	37	59.0	37.7
2015	42	56.6	39.5
2014	1	58.8	47.0
2013	28	64.1	34.2
2012	34	56.7	40.4
2011	22	61.6	37.7
2010	21	55.3	44.3
2009	65	55.1	38.8
2008	79	54.6	36.9
2007	52	56.5	38.6
2006	31	58.3	39.4
2005	6	59.2	42.5
2004	27	58.2	40.2
2003	30	56.0	41.8
2001	23	55.6	43.5
2000	16	61.7	38.6
1998	75	57.3	34.8
1997	35	59.8	37.2
1996	12	59.2	41.7
1995	7	59.6	42.1
1994	87	54.1	35.6
1993	76	56.2	35.6
1992	92	53.7	34.8
1991	66	58.9	34.9
1990	101	56.9	28.6
1989	77	58.5	33.0
1988	41	59.7	36.5
1986	62	58.1	35.9
1985	97	53.6	34.1
1983	17	57.7	42.5
1982	48	58.8	36.5
1981	9	58.7	42.5
1980	20	62.3	37.4
1978	95	57.7	30.2
1977	5	63.8	38.5
1976	45	65.8	30.2
1975	40	60.8	35.4
1974	71	56.5	36.5
1973	32	57.2	40.4
1972	104	51.9	32.4
1971	98	54.1	33.6
1970	78	53.4	38.1
1969	19	59.4	40.5
1968	90	53.6	34.9
1967	68	58.3	35.2
1966	53	55.7	39.1
1965	103	51.8	32.7
1964	15	58.3	42.1
1963	93	53.8	34.2
1962	50	57.3	37.9
1961	80	55.3	36.0
1960	63	56.2	37.8
1959	44	63.1	33.0
1958	2	67.7	37.9
1957	58	57.4	37.0
1956	67	63.6	30.1
1955	25	56.6	42.1
1954	88	53.4	36.2
1952	47	54.9	40.5
1951	82	54.6	36.2
1950	18	57.1	42.9
1949	86	56.4	33.3
1948	107	51.3	32.7
1947	83	57.4	33.4
1946	64	55.8	38.2
1945	49	56.2	39.0
1944	24	60.8	38.2
1943	33	60.2	37.3
1942	56	56.0	38.6
1941	46	56.5	39.3
1940	14	61.6	39.1
1939	13	62.0	38.8
1938	26	60.7	37.9
1937	11	62.4	38.5
1936	84	58.6	32.0
1935	60	59.2	34.9
1934	55	58.6	36.0
1933	70	54.1	39.0
1932	106	54.0	30.2
1931	94	52.9	35.1
1930	73	61.4	31.0
1929	3	62.6	42.0
1928	99	54.1	33.1
1927	51	59.9	35.3
1926	74	57.2	35.1
1925	59	59.8	34.5
1924	105	49.8	34.5
1923	85	58.9	31.5
1922	54	56.2	38.5
1921	29	60.5	37.6
1920	43	59.3	36.7
1919	102	56.4	28.4
1918	81	59.3	31.8
1917	10	62.7	38.5
1916	100	54.3	32.9
1915	36	58.0	38.8
1914	89	53.7	35.0
1913	72	56.1	36.6
1912	39	60.2	36.1
1911	61	59.0	35.0
1909	91	53.6	34.9
1908	96	53.4	34.4
1907	38	58.2	38.4

Weather Station Details

Years	Station	Coordinates
1907–2023	Saint Helena	location