Missoula MT Most Precipitation in a Day for Each Year

This page lists the biggest rainstorms or snowstorms of the year in Missoula, Montana along with the date they occurred. The information answers questions like: When was the last time more than two inches of precipitation landed on Missoula in a single day? What was the rainiest day of 2019?

The list gives the highest daily precipitation for each year in Missoula and the date that it happened. A date with a plus sign beside it means the same amount of moisture also fell on at least one other day earlier that year.

These records were observed at Missoula International Airport and go back to 1927. During that time the heaviest downpour measured for a single day was 2.32 inches (58.9 millimetres) on November 5, 1927.

Most precipitation in one day for recent years in Missoula
Inches	Date	Millimetres
0.57	August 29, 2023	14.5
1.11	September 22, 2022	28.2
1.00	May 23, 2021	25.4
0.97	June 29, 2020	24.6
1.11	April 09, 2019	28.2
0.78	November 24, 2018	19.8
0.85	June 13, 2017	21.6
0.71	April 23, 2016	18.0
0.81	July 11, 2015	20.6
0.75	November 01, 2014	19.1
0.48	June 19, 2013	12.2
0.78	May 27, 2012	19.8
0.68	June 02, 2011	17.3
0.70	June 16, 2010	17.8

Highest daily precipitation recorded at Missoula each year
Inches	Date	Millimetres
2.03	August 07, 2009	51.6
0.87	November 12, 2008	22.1
1.01	September 23, 2007	25.7
1.87	April 06, 2006	47.5
0.62	May 16, 2005	15.7
1.07	August 26, 2004	27.2
0.62	May 04, 2003	15.7
0.82	June 09, 2002	20.8
1.49	June 03, 2001	37.8
0.90	October 01, 2000	22.9
0.74	August 03, 1999	18.8
1.00	July 05, 1998	25.4
0.74	June 11, 1997	18.8
1.05	April 10, 1996	26.7
0.78	September 07, 1995	19.8
1.33	April 24, 1994	33.8
0.99	October 07, 1993	25.1
0.75	March 17, 1992	19.1
0.93	May 17, 1991	23.6
1.13	August 11, 1990	28.7
0.47	June 15, 1989	11.9
0.95	May 30, 1988	24.1
1.62	July 21, 1987	41.1
1.05	September 08, 1986	26.7
0.67	September 12, 1985	17.0
0.63	August 31, 1984	16.0
0.91	July 10, 1983	23.1
0.89	June 29, 1982	22.6
1.54	May 21, 1981	39.1
1.83	May 25, 1980	46.5
0.56	August 31, 1979	14.2
0.86	May 23, 1978	21.8
0.81	August 30, 1977	20.6
0.59	July 12, 1976	15.0
1.17	June 19, 1975	29.7
0.81	January 15, 1974	20.6
1.17	June 14, 1973	29.7
0.94	September 12, 1972	23.9
0.66	June 03, 1971	16.8
0.99	June 27, 1970	25.1
1.16	June 24, 1969	29.5
0.62	August 14, 1968	15.7
0.54	June 06, 1967	13.7
0.59	September 12, 1966	15.0
0.79	September 15, 1965	20.1
1.10	June 08, 1964	27.9
0.76	August 10, 1963	19.3
0.84	January 07, 1962	21.3
0.60	May 04, 1961	15.2
0.74	August 01, 1960	18.8
0.82	May 16, 1959	20.8
1.55	June 11, 1958	39.4
1.29	May 20, 1957	32.8
1.53	April 24, 1956	38.9
0.59	December 16, 1955 +	15.0
1.30	September 15, 1954	33.0
1.31	May 24, 1953	33.3
0.56	May 25, 1952	14.2
1.60	April 30, 1951	40.6
1.13	August 05, 1950	28.7
0.64	May 02, 1949	16.3
0.90	June 03, 1948	22.9
1.43	August 22, 1947	36.3
0.95	October 02, 1946	24.1
–	1945	–
1.25	August 13, 1944	31.8
1.21	October 05, 1943	30.7
0.99	September 10, 1942	25.1
0.72	May 13, 1941	18.3
0.60	September 27, 1940	15.2
0.91	May 16, 1939	23.1
1.54	June 21, 1938	39.1
0.72	December 11, 1937	18.3
0.80	February 12, 1936	20.3
0.62	May 31, 1935	15.7
0.72	June 06, 1934	18.3
0.78	October 16, 1933	19.8
1.40	May 03, 1932	35.6
1.54	September 09, 1931	39.1
0.76	September 23, 1930	19.3
0.83	June 10, 1929	21.1
0.83	June 23, 1928	21.1
2.32	November 05, 1927	58.9

Missoula - Extreme Daily Precipitation for Each Year

Reference

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