| Rank | Precipitation | Date |
|---|---|---|
| 1 | 9.7 cm | July 12, 1972 |
| 2 | 9.0 cm | May 22, 2012 |
| 3 | 7.5 cm | April 19, 1961 |
| 4 | 7.4 cm | July 25, 1960 |
| 5 | 7.3 cm | June 21, 1999 |
| 6 | 7.2 cm | June 29, 1937 |
| 7 | 7.1 cm | May 24, 2018 |
| 8 | 6.9 cm | October 3, 1932 |
| 9 | 6.8 cm | May 16, 2010 |
| 10 | 6.7 cm | June 29, 1974 |
| 11 | 6.2 cm | August 24, 1986 |
| 12 | 6.1 cm | August 28, 2013 |
| 12 | 6.1 cm | June 6, 2008 |
| 14 | 5.8 cm | July 17, 1951 |
| 15 | 5.8 cm | August 12, 1940 |
| 16 | 5.7 cm | September 8, 1980 |
| 17 | 5.7 cm | July 24, 2017 |
| 18 | 5.6 cm | August 8, 2004 |
| 19 | 5.6 cm | October 29, 1936 |
| 20 | 5.5 cm | June 9, 2015 |
| 20 | 5.5 cm | September 8, 1995 |