Washington September Precipitation by Year

This page is a list of the average statewide precipitation in the month of September 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 September in Washington History?

2013 was the wettest September in Washington history with an average monthly statewide precipitation of 5.60 inches.

What Was the Driest September in Washington History?

1975 was the driest September in Washington history with an average monthly statewide precipitation of 0.10 inches.

Click column headers to sort

Year	Rank	Precipitation (in)
2023	44	2.26
2022	118	0.44
2021	20	3.12
2020	41	2.42
2019	11	3.62
2018	78	1.59
2017	88	1.35
2016	72	1.67
2015	84	1.50
2014	67	1.79
2013	1	5.60
2012	128	0.16
2011	92	1.29
2010	12	3.46
2009	74	1.65
2008	111	0.65
2007	86	1.43
2006	97	1.17
2005	79	1.59
2004	27	2.81
2003	93	1.23
2002	106	0.79
2001	107	0.79
2000	60	1.97
1999	121	0.36
1998	110	0.66
1997	6	3.88
1996	52	2.12
1995	62	1.93
1994	87	1.37
1993	124	0.34
1992	48	2.15
1991	126	0.23
1990	127	0.21
1989	123	0.35
1988	46	2.17
1987	116	0.51
1986	21	3.09
1985	28	2.76
1984	55	2.09
1983	49	2.15
1982	36	2.49
1981	31	2.69
1980	35	2.51
1979	59	2.03
1978	7	3.88
1977	18	3.16
1976	105	0.81
1975	129	0.10
1974	117	0.51
1973	38	2.45
1972	14	3.39
1971	22	2.97
1970	39	2.45
1969	8	3.88
1968	40	2.44
1967	94	1.21
1966	82	1.54
1965	109	0.74
1964	50	2.14
1963	85	1.45
1962	43	2.28
1961	90	1.31
1960	98	1.17
1959	2	5.00
1958	64	1.88
1957	104	0.90
1956	47	2.17
1955	66	1.80
1954	61	1.95
1953	69	1.77
1952	114	0.59
1951	53	2.11
1950	96	1.19
1949	70	1.77
1948	26	2.82
1947	54	2.10
1946	81	1.55
1945	19	3.15
1944	29	2.75
1943	119	0.44
1942	125	0.27
1941	9	3.85
1940	42	2.39
1939	101	0.97
1938	102	0.96
1937	76	1.60
1936	83	1.51
1935	80	1.57
1934	58	2.04
1933	5	4.00
1932	112	0.64
1931	25	2.87
1930	71	1.73
1929	115	0.52
1928	108	0.77
1927	4	4.20
1926	30	2.70
1925	99	1.13
1924	45	2.18
1923	91	1.31
1922	56	2.09
1921	24	2.88
1920	3	4.84
1919	51	2.13
1918	120	0.43
1917	73	1.66
1916	100	1.02
1915	103	0.96
1914	13	3.44
1913	33	2.53
1912	95	1.21
1911	10	3.70
1910	77	1.60
1909	68	1.78
1908	122	0.36
1907	34	2.52
1906	17	3.20
1905	16	3.21
1904	113	0.64
1903	15	3.27
1902	65	1.87
1901	23	2.97
1900	57	2.07
1899	75	1.64
1898	32	2.56
1897	63	1.89
1896	89	1.35
1895	37	2.49