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Seattle May Precipitation Totals

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

Rainiest May in Seattle History

The rainiest May in Seattle, Washington history happened in 1948, with 4.76 inches of total precipitation.

Driest May in Seattle History

The driest May in Seattle, Washington history happened in 2018, with just 0.12 inches of total precipitation.

Seattle Average May Precipitation by Year

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Year	Precipitation (inches)
2023	0.93
2022	3.82
2021	1.12
2020	3.12
2019	0.62
2018	0.12
2017	2.28
2016	0.94
2015	0.58
2014	3.15
2013	2.38
2012	2.05
2011	3.20
2010	2.83
2009	3.61
2008	0.89
2007	1.46
2006	1.65
2005	3.32
2004	2.51
2003	1.16
2002	1.11
2001	1.39
2000	3.27
1999	2.12
1998	1.98
1997	1.87
1996	2.07
1995	0.81
1994	1.43
1993	2.86
1992	0.12
1991	1.39
1990	1.98
1989	2.78
1988	3.01
1987	2.38
1986	1.71
1985	0.85
1984	3.38
1983	2.10
1982	0.63
1981	1.33
1980	0.97
1979	0.88
1978	1.79
1977	3.70
1976	1.61
1975	1.13
1974	1.37
1973	1.60
1972	0.69
1971	1.43
1970	1.17
1969	2.93
1968	1.67
1967	0.38
1966	1.35
1965	1.63
1964	0.91
1963	0.90
1962	1.82
1961	3.07
1960	3.04
1959	1.60
1958	0.94
1957	1.17
1956	0.83
1955	1.95
1954	1.89
1953	2.51
1952	0.99
1951	1.61
1950	0.78
1949	1.30
1948	4.76
1947	0.60
1946	0.36
1945	2.71
1944	1.14
1943	1.77
1942	1.68
1941	3.36
1940	1.24
1939	1.27
1938	1.04
1937	1.57
1936	3.29
1935	0.55
1934	2.48
1933	2.63
1932	0.58
1931	1.02
1930	2.41
1929	1.48
1928	0.31
1927	1.81
1926	1.83
1925	1.28
1924	0.68
1923	1.45
1922	1.08
1921	1.93
1920	0.96
1919	2.08
1918	1.19
1917	0.83
1916	1.56
1915	1.72
1914	0.74
1913	1.37
1912	1.64
1911	2.48
1910	1.88
1909	1.60
1908	3.19
1907	0.98
1906	2.64
1905	3.37
1904	0.34
1903	2.39
1902	1.86
1901	1.44
1900	3.73
1899	2.09
1898	0.66
1897	1.30
1896	3.60
1895	3.20
1894	1.99

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