Seattle September Precipitation Totals

A time series of total precipitation in the month of September in Seattle, Washington from 1894–2023.

Rainiest September in Seattle History

The rainiest September in Seattle, Washington history happened in 2013, with 6.17 inches of total precipitation.

Driest September in Seattle History

There have been 2 times where no rain was recorded in Seattle, Washington for the entire month of September. The most recent time this happened was 1991.

Seattle Average September Precipitation by Year

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Year	Precipitation (inches)
2023	3.44
2022	0.25
2021	3.02
2020	2.48
2019	3.32
2018	1.04
2017	0.59
2016	1.05
2015	0.83
2014	2.23
2013	6.17
2012	0.03
2011	1.29
2010	4.80
2009	1.75
2008	0.78
2007	3.16
2006	1.43
2005	0.75
2004	2.80
2003	0.89
2002	0.42
2001	0.83
2000	1.12
1999	0.17
1998	0.72
1997	3.41
1996	1.85
1995	0.91
1994	1.69
1993	0.03
1992	1.15
1991	0.00
1990	0.05
1989	0.54
1988	1.75
1987	0.91
1986	1.89
1985	1.98
1984	1.01
1983	1.85
1982	1.49
1981	3.42
1980	1.43
1979	2.07
1978	5.95
1977	2.55
1976	1.25
1975	0.00
1974	0.21
1973	1.81
1972	4.10
1971	3.51
1970	2.23
1969	5.57
1968	1.93
1967	0.94
1966	1.77
1965	0.49
1964	2.27
1963	0.59
1962	2.31
1961	0.46
1960	1.17
1959	4.60
1958	1.42
1957	0.76
1956	2.42
1955	1.52
1954	1.68
1953	3.28
1952	0.32
1951	2.03
1950	2.30
1949	1.43
1948	3.85
1947	0.81
1946	1.36
1945	3.46
1944	0.65
1943	0.12
1942	0.27
1941	3.03
1940	2.58
1939	1.30
1938	0.48
1937	2.42
1936	1.40
1935	1.86
1934	2.22
1933	3.02
1932	0.23
1931	2.97
1930	1.14
1929	0.09
1928	0.53
1927	2.73
1926	0.60
1925	0.59
1924	2.68
1923	1.37
1922	1.19
1921	1.84
1920	2.34
1919	2.03
1918	0.08
1917	1.29
1916	0.70
1915	0.65
1914	1.42
1913	2.37
1912	0.73
1911	3.27
1910	1.04
1909	1.10
1908	0.23
1907	3.39
1906	3.31
1905	1.70
1904	0.22
1903	3.18
1902	2.15
1901	2.30
1900	0.72
1899	1.52
1898	2.92
1897	2.04
1896	1.78
1895	1.01
1894	2.50

Notes

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