Most Yearly Precipitation in Helena History

This is a list of the largest annual precipitation totals ever recorded in Helena, Montana history from 1893–2024.

What Was the Wettest Year in Helena History?

According to NOAA records, the most precipitation that Helena, Montana has ever received in a single calendar year is 20.9 inches which occurred in 1975.

Year to date though April 29, 2024: 4.2 inches

Helena Precipitation by Year

Years marked with a gold background have more than 5% incomplete data
Click column headers to sort

Year	Rank	Precipitation (inches)
2024	131	4.2
2023	48	12.5
2022	66	11.5
2021	115	8.6
2020	97	9.9
2019	9	16.5
2018	39	12.9
2017	80	10.5
2016	88	10.2
2015	96	9.9
2014	132	0.0
2013	78	10.6
2012	98	9.8
2011	35	13.3
2010	38	13.0
2009	86	10.3
2008	107	9.2
2007	84	10.4
2006	46	12.5
2005	53	12.2
2004	55	12.1
2003	104	9.3
2002	45	12.5
2001	85	10.3
2000	117	8.4
1999	102	9.5
1998	44	12.6
1997	79	10.6
1996	100	9.7
1995	51	12.4
1994	126	7.5
1993	4	18.8
1992	105	9.3
1991	58	11.9
1990	116	8.4
1989	47	12.5
1988	93	10.0
1987	94	10.0
1986	54	12.1
1985	113	9.0
1984	110	9.0
1983	28	14.0
1982	29	14.0
1981	31	13.8
1980	8	17.1
1979	83	10.4
1978	74	11.0
1977	69	11.3
1976	92	10.1
1975	1	20.9
1974	82	10.5
1973	130	6.3
1972	119	8.2
1971	89	10.1
1970	99	9.7
1969	43	12.7
1968	36	13.2
1967	22	14.4
1966	128	6.5
1965	15	15.5
1964	32	13.6
1963	65	11.6
1962	27	14.1
1961	120	8.2
1960	123	7.5
1959	103	9.4
1958	40	12.9
1957	21	14.7
1956	109	9.1
1955	59	11.9
1954	81	10.5
1953	114	8.9
1952	111	9.0
1951	56	12.0
1950	52	12.4
1949	108	9.2
1948	50	12.4
1947	25	14.2
1946	49	12.4
1945	101	9.7
1944	41	12.8
1943	106	9.3
1942	95	9.9
1941	24	14.2
1940	87	10.2
1939	122	8.0
1938	13	16.1
1937	64	11.6
1936	75	10.9
1935	129	6.3
1934	121	8.2
1933	62	11.7
1932	73	11.0
1931	127	7.2
1930	118	8.2
1929	67	11.5
1928	76	10.9
1927	6	18.0
1926	37	13.1
1925	5	18.6
1924	112	9.0
1923	34	13.4
1922	33	13.5
1921	72	11.1
1920	26	14.1
1919	125	7.5
1918	70	11.2
1917	16	15.5
1916	3	18.9
1915	10	16.4
1914	30	13.9
1913	57	12.0
1912	20	14.7
1911	14	16.0
1910	60	11.8
1909	12	16.1
1908	2	19.6
1907	42	12.7
1906	23	14.3
1905	91	10.1
1904	124	7.5
1903	68	11.4
1902	90	10.1
1901	19	14.7
1900	63	11.6
1899	61	11.8
1898	7	17.4
1897	11	16.2
1896	18	15.4
1895	77	10.7
1894	71	11.2
1893	17	15.5