Average Precipitation in Illinois by Year

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

1993 was the wettest year in Illinois history with an average annual statewide precipitation of 51.2 inches.

What Was the Driest Year in Illinois History?

1901 was the driest year in Illinois history with an average annual statewide precipitation of 25.5 inches.

Click column headers to sort

Year	Rank	Precipitation (in)
2023	101	34.4
2022	68	37.2
2021	37	41.1
2020	23	41.9
2019	5	49.9
2018	13	45.8
2017	61	37.8
2016	51	39.8
2015	7	48.8
2014	34	41.3
2013	22	42.5
2012	120	30.1
2011	11	46.1
2010	44	40.7
2009	2	51.0
2008	3	50.2
2007	75	36.7
2006	45	40.6
2005	117	31.4
2004	48	40.0
2003	62	37.8
2002	54	39.1
2001	52	39.7
2000	50	39.8
1999	84	35.7
1998	16	44.5
1997	93	35.1
1996	56	38.8
1995	55	38.9
1994	87	35.5
1993	1	51.2
1992	80	35.8
1991	77	36.1
1990	4	49.9
1989	111	32.4
1988	122	29.3
1987	96	34.7
1986	64	37.5
1985	14	45.6
1984	33	41.3
1983	35	41.3
1982	10	46.6
1981	30	41.7
1980	104	33.7
1979	58	38.6
1978	83	35.7
1977	25	41.8
1976	124	28.5
1975	41	40.8
1974	31	41.7
1973	8	47.6
1972	32	41.5
1971	112	32.2
1970	27	41.8
1969	43	40.7
1968	86	35.7
1967	47	40.6
1966	95	34.9
1965	24	41.8
1964	113	32.1
1963	126	27.8
1962	107	33.4
1961	18	43.0
1960	100	34.6
1959	60	37.8
1958	90	35.3
1957	15	45.3
1956	119	30.2
1955	102	34.4
1954	89	35.4
1953	128	27.4
1952	106	33.5
1951	19	43.0
1950	28	41.8
1949	39	40.8
1948	74	36.7
1947	66	37.3
1946	53	39.4
1945	12	45.9
1944	105	33.6
1943	97	34.7
1942	38	41.0
1941	49	39.8
1940	123	28.9
1939	82	35.8
1938	46	40.6
1937	76	36.6
1936	121	30.0
1935	36	41.3
1934	108	32.8
1933	98	34.7
1932	79	35.8
1931	65	37.4
1930	127	27.6
1929	29	41.7
1928	71	37.0
1927	6	49.2
1926	20	42.8
1925	114	32.1
1924	81	35.8
1923	63	37.7
1922	103	34.0
1921	42	40.7
1920	109	32.6
1919	67	37.2
1918	59	38.0
1917	115	32.0
1916	72	37.0
1915	26	41.8
1914	125	28.2
1913	92	35.2
1912	94	35.0
1911	57	38.6
1910	116	31.9
1909	17	43.2
1908	88	35.4
1907	40	40.8
1906	73	36.8
1905	70	37.0
1904	69	37.2
1903	99	34.6
1902	21	42.8
1901	129	25.5
1900	91	35.3
1899	110	32.6
1898	9	46.8
1897	85	35.7
1896	78	36.0
1895	118	31.2