| Rank | Precipitation | Month |
|---|---|---|
| 1 | 26.5 cm | September 1965 |
| 2 | 25.9 cm | November 1996 |
| 3 | 21.4 cm | June 1953 |
| 4 | 20.6 cm | June 1930 |
| 5 | 19.6 cm | May 1983 |
| 6 | 19.3 cm | May 1988 |
| 7 | 19.2 cm | November 1950 |
| 8 | 17.8 cm | October 1993 |
| 9 | 17.6 cm | June 1987 |
| 10 | 17.6 cm | November 1951 |
| 11 | 17.3 cm | November 2000 |
| 12 | 17.1 cm | December 1981 |
| 13 | 16.5 cm | June 1993 |
| 14 | 16.5 cm | May 2013 |
| 15 | 16.4 cm | November 2014 |
| 16 | 16.4 cm | March 2001 |
| 17 | 16.1 cm | October 1939 |
| 18 | 15.8 cm | October 2004 |
| 19 | 15.5 cm | November 2002 |
| 20 | 15.5 cm | September 1968 |