| Rank | Precipitation | Date |
|---|---|---|
| 1 | 6.3 cm | June 12, 2009 |
| 2 | 6.1 cm | August 21, 1938 |
| 3 | 6.0 cm | June 10, 1970 |
| 4 | 5.9 cm | August 7, 1987 |
| 5 | 5.9 cm | July 15, 2001 |
| 6 | 5.7 cm | August 9, 1978 |
| 7 | 5.4 cm | June 12, 1970 |
| 8 | 5.4 cm | June 20, 2016 |
| 8 | 5.4 cm | August 4, 2008 |
| 8 | 5.4 cm | July 2, 1972 |
| 11 | 5.3 cm | August 18, 1952 |
| 12 | 5.0 cm | July 23, 1993 |
| 13 | 4.7 cm | June 17, 1936 |
| 14 | 4.4 cm | June 3, 2009 |
| 14 | 4.4 cm | June 7, 2004 |
| 16 | 4.3 cm | July 21, 1961 |
| 17 | 4.2 cm | July 23, 1990 |
| 18 | 4.1 cm | July 27, 1979 |
| 19 | 4.1 cm | August 6, 1987 |
| 20 | 4.1 cm | August 16, 2010 |