Washington DC Most Precipitation in a Day for Each Year

This page lists the biggest rainstorms or snowstorms of the year in Washington DC along with the date they occurred. The information can answer questions such as: When was the last time more than four inches of precipitation landed on Washington in a single day? What was the rainiest day of 2019?

The precipitation extremes were measured at Reagan National Airport near downtown Washington and go back to 1946. During that time, the heaviest downpour recorded for a single day there was 6.1 inches (155.2 millimetres) of rain in 1972.

Most precipitation in one day for recent years in Washington DC
Inches	Date	Millimetres
2.14	November 21, 2023	54.4
4.05	July 09, 2022	102.9
2.38	August 14, 2021	60.5
2.88	September 10, 2020	73.2
3.44	July 08, 2019	87.4
4.00	July 21, 2018	101.6
3.31	July 28, 2017	84.1
1.24	May 02, 2016	31.5
2.75	June 27, 2015	69.9
2.70	April 30, 2014	68.6
2.86	June 28, 2013	72.6
3.85	October 29, 2012	97.8
3.33	August 27, 2011	84.6
4.66	September 30, 2010	118.4

Highest daily precipitation recorded at Washington DC each year
Inches	Date	Millimetres
1.65	May 26, 2009	41.9
3.50	September 06, 2008	88.9
2.65	October 26, 2007	67.3
5.19	June 25, 2006	131.8
3.67	October 08, 2005	93.2
2.46	September 28, 2004	62.5
2.28	September 18, 2003	57.9
1.92	June 13, 2002	48.8
1.64	June 16, 2001	41.7
1.86	September 25, 2000	47.2
3.67	September 16, 1999	93.2
2.02	February 04, 1998	51.3
2.17	May 25, 1997	55.1
2.57	November 08, 1996	65.3
3.36	October 14, 1995	85.3
1.65	March 02, 1994	41.9
2.29	March 13, 1993	58.2
1.84	January 04, 1992	46.7
1.59	January 11, 1991	40.4
2.19	June 09, 1990	55.6
2.10	May 05, 1989	53.3
1.34	March 26, 1988	34.0
2.13	September 12, 1987	54.1
2.36	December 24, 1986	59.9
3.17	September 27, 1985	80.5
1.70	November 28, 1984	43.2
2.31	June 28, 1983	58.7
1.75	June 13, 1982	44.5
1.59	July 04, 1981	40.4
1.61	October 25, 1980	40.9
3.68	September 05, 1979	93.5
2.16	March 26, 1978	54.9
2.81	December 18, 1977	71.4
4.76	September 16, 1976	120.9
3.46	September 25, 1975	87.9
1.90	December 01, 1974	48.3
2.88	August 20, 1973	73.2
6.11	June 21, 1972	155.2
3.79	August 27, 1971	96.3
4.69	July 09, 1970	119.1
4.35	July 22, 1969	110.5
2.23	June 12, 1968	56.6
3.47	August 24, 1967	88.1
4.07	September 14, 1966	103.4
1.60	October 07, 1965	40.6
1.25	August 03, 1964	31.8
4.83	August 20, 1963	122.7
1.68	October 04, 1962	42.7
2.40	August 23, 1961	61.0
2.18	September 12, 1960	55.4
2.76	June 02, 1959	70.1
3.12	August 25, 1958	79.2
1.71	August 25, 1957	43.4
1.70	September 27, 1956	43.2
5.44	August 12, 1955	138.2
1.73	October 15, 1954	43.9
3.24	May 05, 1953	82.3
2.82	September 01, 1952	71.6
2.90	July 28, 1951	73.7
3.74	August 19, 1950	95.0
1.92	May 22, 1949	48.8
2.84	August 01, 1948	72.1
3.47	June 07, 1947	88.1
2.59	August 06, 1946	65.8

Washington DC - Extreme Daily Precipitation for Each Year

Reference

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