Average Precipitation in Idaho by Year

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

1996 was the wettest year in Idaho history with an average annual statewide precipitation of 32.1 inches.

What Was the Driest Year in Idaho History?

1935 was the driest year in Idaho history with an average annual statewide precipitation of 16.2 inches.

Click column headers to sort

Year	Rank	Precipitation (in)
2023	83	22.3
2022	88	22.0
2021	102	20.9
2020	84	22.2
2019	63	23.4
2018	90	21.9
2017	12	28.8
2016	49	24.9
2015	79	22.5
2014	27	26.5
2013	127	17.6
2012	37	25.7
2011	50	24.7
2010	31	26.1
2009	73	22.9
2008	89	22.0
2007	113	19.6
2006	28	26.4
2005	51	24.6
2004	68	23.2
2003	78	22.6
2002	116	19.0
2001	115	19.1
2000	103	20.9
1999	77	22.6
1998	11	29.0
1997	44	25.3
1996	1	32.1
1995	3	31.1
1994	106	20.4
1993	56	24.1
1992	117	19.0
1991	80	22.4
1990	64	23.4
1989	101	21.0
1988	105	20.5
1987	122	18.4
1986	47	25.1
1985	108	20.1
1984	19	27.4
1983	2	31.4
1982	5	30.6
1981	32	26.1
1980	13	28.7
1979	111	19.9
1978	67	23.2
1977	57	24.0
1976	107	20.3
1975	10	29.1
1974	76	22.7
1973	55	24.1
1972	41	25.5
1971	15	28.1
1970	6	30.2
1969	93	21.6
1968	26	26.5
1967	42	25.5
1966	119	18.8
1965	66	23.3
1964	4	30.7
1963	30	26.2
1962	69	23.0
1961	65	23.3
1960	94	21.6
1959	70	22.9
1958	45	25.2
1957	48	25.1
1956	85	22.1
1955	20	27.3
1954	95	21.5
1953	61	23.7
1952	123	18.4
1951	33	26.1
1950	18	27.4
1949	110	20.0
1948	21	27.2
1947	86	22.1
1946	24	26.5
1945	22	26.6
1944	104	20.8
1943	100	21.1
1942	43	25.5
1941	25	26.5
1940	16	27.9
1939	128	16.8
1938	36	25.9
1937	53	24.2
1936	91	21.7
1935	129	16.2
1934	114	19.4
1933	81	22.4
1932	52	24.2
1931	120	18.6
1930	97	21.4
1929	121	18.6
1928	125	17.9
1927	7	30.2
1926	75	22.8
1925	34	26.1
1924	126	17.7
1923	39	25.6
1922	82	22.3
1921	38	25.7
1920	59	23.9
1919	109	20.1
1918	98	21.3
1917	62	23.6
1916	29	26.3
1915	60	23.7
1914	99	21.2
1913	40	25.5
1912	23	26.6
1911	72	22.9
1910	74	22.9
1909	9	29.6
1908	92	21.7
1907	17	27.8
1906	14	28.5
1905	118	19.0
1904	46	25.2
1903	54	24.2
1902	71	22.9
1901	87	22.1
1900	96	21.4
1899	58	23.9
1898	124	18.3
1897	35	26.0
1896	8	29.7
1895	112	19.8