St. Helena December Precipitation Totals

A time series of total precipitation in the month of December in St. Helena, California from 1907–2022.

Rainiest December in St. Helena History

The rainiest December in St. Helena, California history happened in 1955, with 24.32 inches of total precipitation.

Driest December in St. Helena History

There have been 4 times where no rain was recorded in St. Helena, California for the entire month of December. The most recent time this happened was 2022.

St. Helena Average December Precipitation by Year

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Year	Precipitation (inches)
2022	0.00
2020	0.00
2019	1.20
2018	2.24
2017	0.07
2016	3.41
2015	3.31
2014	17.08
2013	0.00
2012	11.68
2010	11.32
2009	3.54
2008	3.63
2007	5.35
2006	5.83
2005	20.59
2004	7.91
2003	12.46
2002	22.12
2001	13.57
2000	0.91
1998	2.57
1997	3.47
1996	14.14
1995	11.77
1994	4.08
1992	14.53
1990	0.48
1989	0.00
1986	2.10
1985	4.13
1983	13.26
1982	5.41
1981	12.20
1980	9.48
1978	0.71
1976	1.39
1975	0.81
1974	4.58
1973	5.69
1972	4.51
1971	7.81
1970	13.82
1969	13.56
1968	10.58
1967	4.59
1966	7.13
1965	5.41
1964	14.22
1963	0.74
1962	5.38
1961	5.75
1960	3.63
1959	2.45
1958	2.43
1957	5.70
1956	0.48
1955	24.32
1954	5.17
1952	16.09
1951	10.09
1950	9.58
1949	3.02
1948	5.33
1947	1.22
1946	3.27
1945	11.79
1944	3.43
1943	2.50
1942	5.16
1941	12.11
1940	17.02
1939	3.31
1938	1.87
1937	8.24
1936	2.92
1935	3.26
1934	3.51
1933	8.98
1932	4.53
1931	14.38
1930	0.93
1929	12.24
1928	5.86
1927	4.46
1925	1.41
1924	7.96
1923	1.58
1922	11.43
1921	8.10
1920	10.02
1919	6.02
1917	2.16
1916	8.84
1915	9.83
1914	6.16
1913	19.61
1912	2.48
1911	2.58
1910	1.85
1909	8.22
1908	4.68
1907	8.28

Notes

Its possible for precipitation totals to include both rain and melted snowfall
Months with more than 10% missing data are excluded