Philadelphia - Extreme Daily Precipitation for Each Year





This page lists the biggest rainstorms or snowstorms of the year in Philadelphia, Pennsylvania along with the date they occurred. The information answers questions like: When was the last time more than six inches of precipitation landed on Philadelphia in a single day? What was the rainiest day of 2018?

The list gives the highest daily precipitation for each year in Philadelphia 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 1925. During that time the heaviest downpour measured for a single day was 8.02 inches (203.7 millimetres) on July 28, 2013.

Since 1948 the precipitation extremes were observed at Philadelphia International Airport. Before then, the weather station was on the northern outskirts of the city.

Most precipitation in one day for recent years in Philadelphia
Inches Date Milli­metres
4.54 September 07, 2018 115.3
2.58 September 16, 2017 65.5
1.96 May 21, 2016 49.8
4.76 September 10, 2015 120.9
4.42 April 30, 2014 112.3
8.02 July 28, 2013 203.7
3.12 September 04, 2012 79.2
4.84 August 14, 2011 122.9
3.00 October 01, 2010 76.2
Highest daily precipitation recorded at Philadelphia each year
Inches Date Milli­metres
2.73 August 22, 2009 69.3
2.72 December 11, 2008 69.1
4.19 April 15, 2007 106.4
2.48 June 28, 2006 63.0
5.53 October 08, 2005 140.5
4.68 July 12, 2004 118.9
1.88 February 22, 2003 47.8
2.04 October 11, 2002 51.8
2.41 June 17, 2001 61.2
2.72 September 03, 2000 69.1
6.63 September 16, 1999 168.4
2.32 January 23, 1998 58.9
1.53 August 20, 1997 38.9
2.02 October 19, 1996 51.3
1.58 October 05, 1995 40.1
3.45 July 18, 1994 87.6
2.32 September 17, 1993 58.9
2.25 December 11, 1992 57.2
2.80 July 13, 1991 71.1
2.25 May 29, 1990 57.2
4.38 July 05, 1989 111.3
3.45 July 21, 1988 87.6
1.73 July 02, 1987 43.9
2.43 April 16, 1986 61.7
2.79 September 26, 1985 70.9
2.24 August 10, 1984 56.9
2.44 September 21, 1983 62.0
2.28 May 28, 1982 57.9
4.40 August 08, 1981 111.8
3.82 October 25, 1980 97.0
1.89 July 16, 1979 48.0
3.66 July 03, 1978 93.0
3.99 November 07, 1977 101.3
1.77 May 01, 1976 45.0
2.75 September 23, 1975 69.9
1.70 August 24, 1974 43.2
4.62 June 29, 1973 117.3
3.07 November 08, 1972 78.0
4.77 August 27, 1971 121.2
2.71 October 22, 1970 68.8
3.37 September 03, 1969 85.6
3.05 June 12, 1968 77.5
2.47 June 22, 1967 62.7
4.69 September 14, 1966 119.1
2.02 August 09, 1965 51.3
2.28 July 08, 1964 57.9
2.42 September 03, 1963 61.5
2.61 June 24, 1962 66.3
1.88 April 13, 1961 47.8
4.60 September 12, 1960 116.8
2.96 June 02, 1959 75.2
2.04 June 11, 1958 51.8
1.78 August 25, 1957 45.2
2.00 May 06, 1956 50.8
3.29 August 12, 1955 83.6
1.67 June 16, 1954 42.4
2.04 July 23, 1953 51.8
2.30 November 21, 1952 58.4
1.77 May 23, 1951 45.0
3.46 November 25, 1950 87.9
1.50 August 04, 1949 38.1
2.30 December 30, 1948 58.4
2.47 October 29, 1947 62.7
3.10 June 02, 1946 78.7
2.05 November 28, 1945 52.1
2.40 September 13, 1944 61.0
2.35 November 09, 1943 59.7
2.13 August 09, 1942 54.1
1.90 December 13, 1941 + 48.3
2.52 March 15, 1940 64.0
4.25 August 19, 1939 108.0
3.61 June 27, 1938 91.7
2.90 November 13, 1937 73.7
2.45 June 19, 1936 + 62.2
3.41 July 09, 1935 86.6
2.65 June 19, 1934 67.3
3.27 August 23, 1933 83.1
2.40 March 28, 1932 61.0
4.38 July 15, 1931 111.3
2.06 March 08, 1930 52.3
2.60 October 02, 1929 66.0
2.50 August 17, 1928 63.5
4.33 July 23, 1927 110.0
1.62 August 13, 1926 41.1
2.25 November 14, 1925 57.2
Reference

Jay Lawrimore. 2016. Global Summary of the Year, Version 1.0. NOAA National Centers for Environmental Information. 

Philadelphia - Extremes
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