Washington May Precipitation by Year

This page is a list of the average statewide precipitation in the month of May in Washington for each year from 1895–2023. It is a statewide average over the entire territory of the state, based on data from the NOAA.

State:

Month:

What Was the Rainiest May in Washington History?

1948 was the wettest May in Washington history with an average monthly statewide precipitation of 5.95 inches.

What Was the Driest May in Washington History?

1924 was the driest May in Washington history with an average monthly statewide precipitation of 0.37 inches.

Click column headers to sort

Year	Rank	Precipitation (in)
2023	115	1.26
2022	8	3.99
2021	116	1.24
2020	13	3.52
2019	84	1.82
2018	122	1.08
2017	53	2.42
2016	100	1.54
2015	103	1.51
2014	51	2.44
2013	30	3.01
2012	58	2.31
2011	6	4.09
2010	3	4.28
2009	23	3.12
2008	96	1.58
2007	107	1.42
2006	55	2.37
2005	12	3.64
2004	26	3.06
2003	104	1.48
2002	72	2.00
2001	78	1.92
2000	27	3.06
1999	50	2.50
1998	11	3.66
1997	41	2.75
1996	14	3.50
1995	102	1.53
1994	68	2.06
1993	28	3.04
1992	128	0.61
1991	37	2.85
1990	19	3.30
1989	42	2.74
1988	24	3.08
1987	43	2.73
1986	46	2.68
1985	97	1.58
1984	2	4.31
1983	89	1.76
1982	123	1.05
1981	36	2.89
1980	48	2.61
1979	92	1.68
1978	40	2.78
1977	18	3.31
1976	71	2.01
1975	65	2.11
1974	44	2.70
1973	67	2.08
1972	70	2.03
1971	69	2.04
1970	117	1.18
1969	62	2.14
1968	75	1.96
1967	112	1.34
1966	111	1.38
1965	77	1.94
1964	108	1.40
1963	88	1.78
1962	33	2.95
1961	29	3.02
1960	5	4.20
1959	52	2.44
1958	121	1.12
1957	45	2.69
1956	113	1.29
1955	81	1.87
1954	101	1.54
1953	32	2.96
1952	106	1.44
1951	66	2.11
1950	114	1.29
1949	105	1.45
1948	1	5.95
1947	126	0.66
1946	118	1.16
1945	22	3.23
1944	79	1.89
1943	74	1.98
1942	16	3.44
1941	4	4.22
1940	86	1.79
1939	90	1.72
1938	120	1.15
1937	110	1.39
1936	35	2.90
1935	127	0.64
1934	63	2.13
1933	25	3.08
1932	95	1.60
1931	119	1.16
1930	59	2.27
1929	94	1.64
1928	124	0.90
1927	31	2.99
1926	47	2.67
1925	83	1.84
1924	129	0.37
1923	61	2.23
1922	99	1.55
1921	87	1.79
1920	98	1.56
1919	60	2.25
1918	80	1.89
1917	91	1.69
1916	57	2.32
1915	9	3.97
1914	109	1.40
1913	54	2.42
1912	49	2.57
1911	7	4.07
1910	82	1.87
1909	64	2.13
1908	39	2.80
1907	93	1.66
1906	10	3.83
1905	17	3.41
1904	125	0.79
1903	76	1.95
1902	34	2.94
1901	56	2.34
1900	21	3.26
1899	38	2.85
1898	73	2.00
1897	85	1.80
1896	15	3.46
1895	20	3.29