NOAA's National Centers for Environmental Information
National Rankings
Contiguous U.S.
May 2018 Precipitation Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Driest/Wettest Since | Record |
|---|---|---|---|---|---|---|
| May 2018 1-Month | 3.01in (76.45mm) | 2.91in (73.91mm) | 0.10in | 78th Driest | Driest since: | 1934 |
| 53rd Wettest | Wettest since: | 2019 | ||||
| Ties: 1903 | ||||||
| Apr– 2-Month | 5.47in (138.94mm) | 5.42in (137.67mm) | 0.05in | 71st Driest | Driest since: | 1934 |
| 60th Wettest | Wettest since: | 1957 | ||||
| Ties: 1980 | ||||||
| Mar– 3-Month | 7.94in (201.68mm) | 7.93in (201.42mm) | 0.01in | 63rd Driest | Driest since: | 1925 |
| 68th Wettest | Wettest since: | 1957, 1991 | ||||
| Ties: 1981 | ||||||
| Feb– 4-Month | 10.82in (274.83mm) | 10.07in (255.78mm) | 0.75in | 95th Driest | Driest since: | 1925 |
| 36th Wettest | Wettest since: | 2019 | ||||
| Jan– 5-Month | 12.67in (321.82mm) | 12.38in (314.45mm) | 0.29in | 79th Driest | Driest since: | 1934 |
| 52nd Wettest | Wettest since: | 2019 | ||||
| Dec 2017– 6-Month | 14.26in (362.20mm) | 14.72in (373.89mm) | -0.46in | 49th Driest | Driest since: | 1931 |
| 81st Wettest | Wettest since: | 2019 | ||||
| Nov 2017– 7-Month | 15.88in (403.35mm) | 16.95in (430.53mm) | -1.07in | 35th Driest | Driest since: | 1934 |
| 95th Wettest | Wettest since: | 1983 | ||||
| Oct 2017– 8-Month | 18.48in (469.39mm) | 19.12in (485.65mm) | -0.64in | 43rd Driest | Driest since: | 1934 |
| 87th Wettest | Wettest since: | 2019 | ||||
| Sep 2017– 9-Month | 20.75in (527.05mm) | 21.61in (548.89mm) | -0.86in | 38th Driest | Driest since: | 1934 |
| 92nd Wettest | Wettest since: | 2019 | ||||
| Aug 2017– 10-Month | 24.17in (613.92mm) | 24.23in (615.44mm) | -0.06in | 62nd Driest | Driest since: | 1918 |
| 68th Wettest | Wettest since: | 2019 | ||||
| Jul 2017– 11-Month | 26.97in (685.04mm) | 27.02in (686.31mm) | -0.05in | 61st Driest | Driest since: | 1931 |
| 69th Wettest | Wettest since: | 2019 | ||||
| Ties: 1965 | ||||||
| Jun 2017– 12-Month | 30.03in (762.76mm) | 29.94in (760.48mm) | 0.09in | 62nd Driest | Driest since: | 1934 |
| 68th Wettest | Wettest since: | 2019 | ||||
| Dec 2016– 18-Month | 47.68in (1,211.07mm) | 44.67in | 3.01in | 104th Driest | Driest since: | 1931 |
| 25th Wettest | Wettest since: | 2019 | ||||
| Jun 2016– 24-Month | 63.41in (1,610.61mm) | 59.89in | 3.52in | 106th Driest | Driest since: | 1931 |
| 23rd Wettest | Wettest since: | 2020 | ||||
| Ties: 2010 | ||||||
| Jun 2015– 36-Month | 97.98in (2,488.69mm) | 89.83in | 8.15in | 117th Driest | Driest since: | 1955 |
| 11th Wettest | Wettest since: | 2019 | ||||
| Jun 2014– 48-Month | 130.10in (3,304.54mm) | 119.71in | 10.39in | 119th Driest | Driest since: | 1956 |
| 8th Wettest | Wettest since: | 2019 | ||||
| Jun 2013– 60-Month | 160.46in (4,075.68mm) | 149.56in | 10.90in | 118th Driest | Driest since: | 1957 |
| 8th Wettest | Wettest since: | 2020 | ||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published May 2025, retrieved on June 3, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings
