These are the one-day rainfalls of three inches or more that have fallen in Philadelphia since 1874:
| Month | Day | Year | High | Low | Rain |
| 9 | 16 | 1999 | 71 | 60 | 6.63 |
| 8 | 3 | 1898 | 82 | 70 | 5.63 |
| 10 | 8 | 2005 | 76 | 60 | 5.53 |
| 8 | 14 | 2011 | 75 | 69 | 4.84 |
| 8 | 27 | 1971 | 75 | 70 | 4.77 |
| 9 | 14 | 1966 | 70 | 65 | 4.69 |
| 7 | 12 | 2004 | 75 | 69 | 4.68 |
| 9 | 22 | 1882 | 76 | 66 | 4.65 |
| 6 | 29 | 1973 | 80 | 70 | 4.62 |
| 9 | 12 | 1960 | 69 | 59 | 4.60 |
| 8 | 27 | 2011 | 78 | 72 | 4.55 |
| 8 | 8 | 1981 | 75 | 68 | 4.40 |
| 7 | 5 | 1989 | 76 | 69 | 4.38 |
| 4 | 15 | 2007 | 48 | 42 | 4.19 |
| 11 | 7 | 1977 | 59 | 55 | 3.99 |
| 2 | 6 | 1896 | 60 | 34 | 3.86 |
| 10 | 25 | 1980 | 67 | 44 | 3.82 |
| 9 | 16 | 1900 | 79 | 65 | 3.79 |
| 8 | 23 | 1933 | 76 | 69 | 3.74 |
| 8 | 19 | 1939 | 76 | 70 | 3.73 |
| 9 | 23 | 1882 | 66 | 58 | 3.72 |
| 12 | 7 | 1914 | 36 | 34 | 3.71 |
| 8 | 7 | 1921 | 88 | 68 | 3.70 |
| 7 | 3 | 1978 | 66 | 61 | 3.66 |
| 9 | 8 | 2011 | 75 | 69 | 3.65 |
| 10 | 19 | 1966 | 60 | 46 | 3.59 |
| 7 | 29 | 1980 | 87 | 73 | 3.53 |
| 8 | 27 | 1882 | 72 | 69 | 3.49 |
| 9 | 17 | 1876 | 74 | 52 | 3.48 |
| 11 | 25 | 1950 | 60 | 27 | 3.46 |
| 7 | 21 | 1988 | 90 | 73 | 3.45 |
| 7 | 18 | 1994 | 85 | 73 | 3.45 |
| 8 | 31 | 1911 | 61 | 57 | 3.41 |
| 9 | 3 | 1969 | 72 | 68 | 3.37 |
| 7 | 30 | 1971 | 79 | 71 | 3.36 |
| 6 | 16 | 1906 | 79 | 67 | 3.30 |
| 4 | 30 | 1947 | 81 | 56 | 3.29 |
| 8 | 12 | 1955 | 74 | 69 | 3.29 |
| 7 | 28 | 1969 | 82 | 70 | 3.28 |
| 6 | 27 | 1938 | 66 | 60 | 3.27 |
| 9 | 4 | 1935 | 72 | 63 | 3.25 |
| 9 | 28 | 2004 | 78 | 65 | 3.22 |
| 5 | 27 | 1918 | 87 | 59 | 3.16 |
| 8 | 13 | 1919 | 70 | 60 | 3.16 |
| 4 | 16 | 2011 | 61 | 43 | 3.11 |
| 11 | 8 | 1972 | 61 | 48 | 3.07 |
| 6 | 12 | 1968 | 76 | 66 | 3.05 |
| 9 | 20 | 1938 | 70 | 60 | 3.04 |
| 8 | 25 | 1906 | 68 | 63 | 3.03 |
| 7 | 31 | 1889 | 80 | 68 | 3.00 |
| 10 | 1 | 2010 | 76 | 57 | 3.00 |
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