| Rank | Precipitation | Month |
|---|---|---|
| 1 | 5.5 inches | April 1900 |
| 2 | 5.0 inches | September 1982 |
| 3 | 4.3 inches | March 1894 |
| 4 | 3.8 inches | February 1897 |
| 5 | 3.7 inches | September 1984 |
| 6 | 3.7 inches | October 1981 |
| 7 | 3.6 inches | May 1896 |
| 7 | 3.6 inches | January 2023 |
| 9 | 3.5 inches | June 1963 |
| 10 | 3.5 inches | May 1898 |
| 11 | 3.4 inches | April 1978 |
| 12 | 3.4 inches | March 2019 |
| 13 | 3.3 inches | December 2010 |
| 14 | 3.3 inches | May 1977 |
| 15 | 3.2 inches | December 1894 |
| 16 | 3.1 inches | May 1967 |
| 17 | 3.0 inches | August 1906 |
| 18 | 2.9 inches | May 1971 |
| 19 | 2.9 inches | August 2012 |
| 20 | 2.9 inches | October 1897 |