| Rank | Precipitation | Month |
|---|---|---|
| 1 | 84.8 cm | May 2015 |
| 2 | 83.5 cm | June 2008 |
| 3 | 79.7 cm | May 1975 |
| 4 | 68.4 cm | June 1959 |
| 5 | 67.2 cm | May 1989 |
| 6 | 65.4 cm | July 1981 |
| 7 | 63.9 cm | May 2006 |
| 8 | 61.8 cm | August 1967 |
| 9 | 61.3 cm | May 1957 |
| 10 | 60.1 cm | June 1993 |
| 11 | 58.5 cm | May 2010 |
| 12 | 58.2 cm | June 2005 |
| 13 | 55.9 cm | September 2010 |
| 14 | 55.8 cm | April 2024 |
| 15 | 54.8 cm | May 2020 |
| 16 | 54.3 cm | May 2014 |
| 17 | 54.0 cm | August 1960 |
| 18 | 53.2 cm | September 1961 |
| 19 | 52.9 cm | August 2014 |
| 20 | 52.5 cm | July 1955 |