Long Island NY Most Precipitation in a Day for Each Year

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

This page gives the highest daily precipitation for each year in Long Island 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 go back to 1938, with a few years missing data. During that time the heaviest downpour measured for a single day was 13.51 inches (343.2 millimetres) on August 13, 2014.

Since 1964 the precipitation extremes were observed at Long Island MacArthur Airport in Ronkonkoma. Before then, the weather station was at nearby Patchogue.

Most precipitation in one day for recent years in Long Island
Inches	Date	Millimetres
4.65	July 16, 2023	118.1
1.63	March 24, 2022	41.4
4.47	October 26, 2021	113.5
2.75	September 10, 2020	69.9
2.18	October 16, 2019	55.4
3.11	March 02, 2018	79.0
4.02	October 29, 2017	102.1
2.13	January 23, 2016	54.1
2.30	September 10, 2015	58.4
13.51	August 13, 2014	343.2
4.15	June 07, 2013	105.4
4.14	June 25, 2012	105.2
5.32	August 14, 2011	135.1
2.66	March 29, 2010	67.6

Highest daily precipitation recorded at Long Island each year
Inches	Date	Millimetres
2.39	September 26, 2008	60.7
3.34	July 18, 2007	84.8
4.63	April 23, 2006	117.6
5.38	October 14, 2005	136.7
3.69	April 13, 2004	93.7
2.85	May 26, 2003	72.4
2.72	August 29, 2002	69.1
2.83	June 17, 2001	71.9
4.87	June 06, 2000	123.7
3.61	January 03, 1999	91.7
3.98	June 13, 1998	101.1
2.08	April 28, 1997 +	52.8
3.35	October 19, 1996	85.1
1.80	October 05, 1995	45.7
1.79	August 05, 1994	45.5
2.27	December 05, 1993	57.7
3.52	June 05, 1992	89.4
5.91	August 19, 1991	150.1
6.74	August 24, 1990	171.2
4.01	May 16, 1989	101.9
2.63	November 20, 1988	66.8
2.52	March 31, 1987	64.0
1.46	November 19, 1986	37.1
2.13	August 25, 1985	54.1
2.69	July 21, 1984	68.3
3.19	April 16, 1983	81.0
4.09	June 05, 1982	103.9
3.25	June 25, 1981	82.6
2.08	April 28, 1980	52.8
2.97	March 06, 1979	75.4
3.00	September 12, 1978	76.2
2.21	August 22, 1977	56.1
3.11	August 08, 1976	79.0
3.22	June 12, 1975	81.8
2.65	October 16, 1974	67.3
1.97	April 26, 1973	50.0
4.53	October 07, 1972	115.1
2.33	November 29, 1971	59.2
2.05	August 23, 1970	52.1
3.91	October 03, 1969	99.3
2.03	November 10, 1968	51.6
2.83	March 07, 1967	71.9
3.12	September 15, 1966	79.2
1.61	January 24, 1965	40.9
2.45	December 04, 1964	62.2
1.68	November 07, 1963	42.7
2.40	August 28, 1962	61.0
2.77	July 20, 1961	70.4
1.97	September 12, 1960	50.0
–	1959	–
2.61	October 01, 1958	66.3
1.54	May 20, 1957	39.1
2.03	November 01, 1956	51.6
5.54	August 12, 1955	140.7
5.70	September 11, 1954	144.8
3.85	December 14, 1953	97.8
1.61	August 10, 1952	40.9
2.32	November 03, 1951	58.9
2.06	November 25, 1950	52.3
2.70	August 31, 1949	68.6
2.00	November 13, 1948	50.8
–	1947	–
5.86	August 07, 1946	148.8
2.01	November 29, 1945	51.1
2.40	January 04, 1944	61.0
2.60	September 15, 1943	66.0
4.09	June 08, 1942	103.9
2.22	June 14, 1941	56.4
2.66	March 04, 1940	67.6
3.37	August 20, 1939	85.6
4.22	September 21, 1938	107.2

Long Island - Extreme Daily Precipitation for Each Year

Reference

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