| Rank | Precipitation | Date |
|---|---|---|
| 1 | 9.5 cm | July 15, 1927 |
| 2 | 9.3 cm | September 12, 1985 |
| 3 | 8.1 cm | August 25, 1945 |
| 4 | 7.9 cm | June 1, 1932 |
| 5 | 7.7 cm | June 7, 1928 |
| 6 | 7.6 cm | June 13, 1970 |
| 6 | 7.6 cm | August 24, 1954 |
| 8 | 7.3 cm | June 24, 1901 |
| 9 | 7.2 cm | June 5, 2007 |
| 10 | 7.1 cm | August 17, 1902 |
| 11 | 6.8 cm | July 29, 1950 |
| 11 | 6.8 cm | August 14, 1899 |
| 13 | 6.7 cm | September 7, 1926 |
| 14 | 6.5 cm | August 1, 1988 |
| 14 | 6.5 cm | May 18, 1902 |
| 16 | 6.5 cm | September 10, 2005 |
| 17 | 6.4 cm | September 1, 1926 |
| 18 | 6.1 cm | September 25, 1986 |
| 19 | 5.9 cm | August 4, 1919 |
| 20 | 5.8 cm | May 2, 1902 |