| Rank | Precipitation | Date |
|---|---|---|
| 1 | 8.2 cm | June 4, 1903 |
| 2 | 8.1 cm | July 29, 2011 |
| 3 | 7.8 cm | July 28, 2004 |
| 4 | 7.5 cm | September 8, 1985 |
| 5 | 7.4 cm | September 24, 1987 |
| 6 | 6.7 cm | July 27, 2004 |
| 7 | 6.3 cm | July 11, 1986 |
| 8 | 6.1 cm | July 17, 1964 |
| 9 | 5.7 cm | August 10, 1930 |
| 9 | 5.7 cm | July 31, 1920 |
| 11 | 5.7 cm | July 17, 1916 |
| 12 | 5.7 cm | July 5, 2010 |
| 13 | 5.6 cm | August 10, 1990 |
| 14 | 5.3 cm | August 8, 1994 |
| 15 | 5.3 cm | September 20, 1883 |
| 16 | 5.1 cm | August 27, 2007 |
| 17 | 5.1 cm | July 31, 1880 |
| 18 | 5.0 cm | June 16, 1987 |
| 19 | 5.0 cm | September 7, 1880 |
| 20 | 5.0 cm | July 12, 1942 |