Average Precipitation in Iowa by Year

This page is a list of the average statewide precipitation in the U.S. state of Iowa 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 Year in Iowa History?

1993 was the wettest year in Iowa history with an average annual statewide precipitation of 47.9 inches.

What Was the Driest Year in Iowa History?

1910 was the driest year in Iowa history with an average annual statewide precipitation of 20.2 inches.

Click column headers to sort

Year	Rank	Precipitation (in)
2023	111	26.8
2022	109	27.3
2021	75	31.1
2020	95	29.3
2019	10	41.6
2018	2	45.1
2017	59	32.4
2016	20	38.1
2015	7	42.5
2014	19	38.7
2013	44	34.4
2012	117	25.6
2011	66	31.8
2010	3	44.1
2009	16	39.2
2008	5	42.9
2007	8	42.4
2006	58	32.4
2005	85	29.8
2004	38	35.4
2003	99	28.7
2002	92	29.5
2001	43	34.6
2000	86	29.7
1999	61	32.3
1998	15	39.6
1997	96	29.2
1996	51	33.7
1995	62	32.3
1994	89	29.6
1993	1	47.9
1992	32	36.2
1991	22	37.7
1990	18	38.9
1989	121	24.7
1988	128	21.5
1987	53	32.9
1986	13	39.9
1985	74	31.2
1984	25	36.9
1983	29	36.5
1982	11	41.4
1981	64	32.0
1980	97	29.1
1979	46	34.4
1978	49	34.1
1977	28	36.6
1976	126	23.6
1975	84	30.1
1974	65	32.0
1973	6	42.9
1972	24	37.1
1971	90	29.5
1970	52	33.5
1969	40	34.8
1968	54	32.8
1967	81	30.1
1966	120	25.3
1965	12	40.3
1964	73	31.3
1963	110	27.1
1962	78	31.1
1961	23	37.3
1960	50	33.8
1959	21	38.0
1958	119	25.3
1957	71	31.5
1956	125	24.3
1955	127	23.0
1954	48	34.2
1953	116	25.8
1952	91	29.5
1951	9	42.0
1950	98	29.0
1949	104	28.2
1948	100	28.5
1947	45	34.4
1946	39	34.9
1945	47	34.2
1944	27	36.7
1943	76	31.1
1942	55	32.6
1941	33	36.2
1940	80	30.5
1939	122	24.5
1938	31	36.3
1937	108	27.5
1936	118	25.5
1935	57	32.5
1934	112	26.7
1933	123	24.5
1932	67	31.7
1931	42	34.6
1930	115	26.1
1929	93	29.5
1928	35	35.5
1927	94	29.3
1926	60	32.3
1925	106	27.9
1924	79	31.0
1923	87	29.6
1922	88	29.6
1921	63	32.0
1920	77	31.1
1919	30	36.4
1918	56	32.5
1917	107	27.6
1916	101	28.5
1915	17	39.0
1914	68	31.7
1913	83	30.1
1912	103	28.4
1911	69	31.6
1910	129	20.2
1909	14	39.7
1908	41	34.7
1907	70	31.6
1906	72	31.5
1905	34	36.1
1904	105	27.9
1903	37	35.4
1902	4	43.8
1901	124	24.5
1900	36	35.4
1899	102	28.5
1898	82	30.1
1897	114	26.2
1896	26	36.8
1895	113	26.3