| Rank | Precipitation | Date |
|---|---|---|
| 1 | 9.5 cm | September 22, 1950 |
| 2 | 6.1 cm | July 29, 1960 |
| 3 | 6.1 cm | June 4, 1903 |
| 4 | 5.3 cm | August 29, 2011 |
| 5 | 5.3 cm | June 30, 1956 |
| 6 | 5.3 cm | August 31, 1901 |
| 7 | 5.2 cm | July 17, 2010 |
| 8 | 5.1 cm | September 17, 1951 |
| 9 | 5.1 cm | June 6, 1890 |
| 10 | 5.0 cm | July 5, 1954 |
| 11 | 5.0 cm | August 22, 1906 |
| 12 | 4.9 cm | July 27, 2011 |
| 13 | 4.9 cm | October 3, 2009 |
| 14 | 4.8 cm | August 2, 1910 |
| 15 | 4.8 cm | June 7, 2004 |
| 15 | 4.8 cm | June 30, 1904 |
| 17 | 4.6 cm | June 15, 1997 |
| 18 | 4.5 cm | July 10, 1879 |
| 19 | 4.5 cm | July 25, 1997 |
| 20 | 4.5 cm | August 19, 1924 |