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Washington D.C. September Precipitation Totals

A time series of total precipitation in the month of September in Washington D.C. from 1855–2023.

Rainiest September in Washington D.C. History

The rainiest September in Washington D.C. history happened in 1934, with 17.45 inches of total precipitation.

Driest September in Washington D.C. History

The driest September in Washington D.C. history happened in 2005, with just 0.11 inches of total precipitation.

Washington D.C. Average September Precipitation by Year

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Year	Precipitation (inches)
2023	3.60
2022	2.27
2021	4.03
2020	5.53
2019	0.25
2018	9.73
2017	1.43
2016	2.50
2015	2.15
2014	1.11
2013	1.22
2012	4.29
2011	8.84
2010	6.02
2009	3.31
2008	6.41
2007	0.60
2006	6.31
2005	0.11
2004	3.99
2003	6.87
2002	2.10
2001	1.41
2000	4.91
1999	10.27
1998	1.83
1997	1.59
1996	7.79
1995	3.73
1994	2.84
1993	3.68
1992	3.49
1991	3.50
1990	0.87
1989	6.68
1988	1.85
1987	5.11
1986	0.60
1985	6.67
1984	2.51
1983	2.90
1982	1.71
1981	1.94
1980	1.90
1979	6.64
1978	1.01
1977	0.32
1976	7.23
1975	12.36
1974	4.39
1973	1.58
1972	1.27
1971	2.48
1970	1.57
1969	5.07
1968	2.97
1967	0.20
1966	6.87
1965	2.12
1964	3.07
1963	3.61
1962	2.64
1961	1.02
1960	4.17
1959	2.05
1958	2.57
1957	3.57
1956	3.70
1955	0.65
1954	0.63
1953	4.07
1952	4.06
1951	2.67
1950	6.73
1949	3.49
1948	3.19
1947	4.70
1946	2.72
1945	3.93
1944	5.77
1943	2.88
1942	2.60
1941	0.53
1940	1.34
1939	6.90
1938	4.27
1937	1.76
1936	1.98
1935	8.08
1934	17.45
1933	2.62
1932	4.24
1931	2.79
1930	0.76
1929	4.32
1928	4.29
1927	1.19
1926	6.80
1925	3.05
1924	7.86
1923	3.15
1922	6.27
1921	3.29
1920	2.87
1919	1.77
1918	2.79
1917	1.34
1916	2.57
1915	1.39
1914	0.66
1913	2.41
1912	5.86
1911	2.03
1910	2.15
1909	3.42
1908	4.65
1907	7.15
1906	0.60
1905	2.34
1904	5.34
1903	0.74
1902	5.30
1901	1.61
1900	4.61
1899	6.14
1898	0.89
1897	1.54
1896	3.18
1895	1.11
1894	1.53
1893	3.91
1892	3.55
1891	3.12
1890	4.22
1889	3.88
1888	6.82
1887	3.12
1886	1.79
1885	2.15
1884	0.14
1883	4.33
1882	7.84
1881	2.19
1880	3.42
1879	1.56
1878	2.46
1877	4.93
1876	10.81
1875	1.98
1874	7.84
1873	3.48
1872	3.92
1871	2.70
1859	5.82
1858	2.90
1856	1.91
1855	1.00

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