NOAA's National Centers for Environmental Information
National Rankings
Contiguous U.S.
May 2009 Precipitation Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Driest/Wettest Since | Record |
|---|---|---|---|---|---|---|
| May 2009 1-Month | 3.31in (84.07mm) | 2.91in (73.91mm) | 0.40in | 104th Driest | Driest since: | 1934 |
| 27th Wettest | Wettest since: | 2019 | ||||
| Apr– 2-Month | 6.13in (155.70mm) | 5.42in (137.67mm) | 0.71in | 106th Driest | Driest since: | 1934 |
| 25th Wettest | Wettest since: | 1957 | ||||
| Mar– 3-Month | 8.83in (224.28mm) | 7.93in (201.42mm) | 0.90in | 104th Driest | Driest since: | 1925 |
| 27th Wettest | Wettest since: | 1957, 1991 | ||||
| Feb– 4-Month | 10.38in (263.65mm) | 10.07in (255.78mm) | 0.31in | 83rd Driest | Driest since: | 1925 |
| 48th Wettest | Wettest since: | 2019 | ||||
| Jan– 5-Month | 11.98in (304.29mm) | 12.38in (314.45mm) | -0.40in | 53rd Driest | Driest since: | 1934 |
| 78th Wettest | Wettest since: | 2019 | ||||
| Dec 2008– 6-Month | 14.82in (376.43mm) | 14.72in (373.89mm) | 0.10in | 67th Driest | Driest since: | 1931 |
| 63rd Wettest | Wettest since: | 2019 | ||||
| Ties: 1897, 1948 | ||||||
| Nov 2008– 7-Month | 16.77in (425.96mm) | 16.95in (430.53mm) | -0.18in | 61st Driest | Driest since: | 1934 |
| 69th Wettest | Wettest since: | 1983 | ||||
| Oct 2008– 8-Month | 18.95in (481.33mm) | 19.12in (485.65mm) | -0.17in | 56th Driest | Driest since: | 1934 |
| 74th Wettest | Wettest since: | 2019 | ||||
| Ties: 1944, 1961 | ||||||
| Sep 2008– 9-Month | 21.63in (549.40mm) | 21.61in (548.89mm) | 0.02in | 65th Driest | Driest since: | 1934 |
| 65th Wettest | Wettest since: | 2019 | ||||
| Aug 2008– 10-Month | 24.68in (626.87mm) | 24.23in (615.44mm) | 0.45in | 71st Driest | Driest since: | 1918 |
| 59th Wettest | Wettest since: | 2019 | ||||
| Jul 2008– 11-Month | 27.48in (697.99mm) | 27.02in (686.31mm) | 0.46in | 74th Driest | Driest since: | 1931 |
| 56th Wettest | Wettest since: | 2019 | ||||
| Jun 2008– 12-Month | 30.48in (774.19mm) | 29.94in (760.48mm) | 0.54in | 77th Driest | Driest since: | 1934 |
| 53rd Wettest | Wettest since: | 2019 | ||||
| Ties: 2004 | ||||||
| Dec 2007– 18-Month | 46.19in (1,173.23mm) | 44.67in | 1.52in | 91st Driest | Driest since: | 1931 |
| 38th Wettest | Wettest since: | 2019 | ||||
| Jun 2007– 24-Month | 60.86in (1,545.84mm) | 59.89in | 0.97in | 74th Driest | Driest since: | 1931 |
| 55th Wettest | Wettest since: | 2020 | ||||
| Jun 2006– 36-Month | 90.93in (2,309.62mm) | 89.83in | 1.10in | 74th Driest | Driest since: | 1955 |
| 54th Wettest | Wettest since: | 2019 | ||||
| Jun 2005– 48-Month | 119.85in (3,044.19mm) | 119.71in | 0.14in | 59th Driest | Driest since: | 1956 |
| 68th Wettest | Wettest since: | 2019 | ||||
| Jun 2004– 60-Month | 153.25in (3,892.55mm) | 149.56in | 3.69in | 87th Driest | Driest since: | 1957 |
| 39th Wettest | Wettest since: | 2020 | ||||
| Ties: 2008 | ||||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published March 2025, retrieved on March 27, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings
