NOAA's National Centers for Environmental Information
National Rankings
Contiguous U.S.
May 2020 Precipitation Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Driest/Wettest Since | Record |
|---|---|---|---|---|---|---|
| May 2020 1-Month | 3.09in (78.49mm) | 2.91in (73.91mm) | 0.18in | 84th Driest | Driest since: | 1934 |
| 47th Wettest | Wettest since: | 2019 | ||||
| Ties: 1980 | ||||||
| Apr– 2-Month | 5.61in (142.49mm) | 5.42in (137.67mm) | 0.19in | 78th Driest | Driest since: | 1934 |
| 53rd Wettest | Wettest since: | 1957 | ||||
| Ties: 1919 | ||||||
| Mar– 3-Month | 8.47in (215.14mm) | 7.93in (201.42mm) | 0.54in | 99th Driest | Driest since: | 1925 |
| 32nd Wettest | Wettest since: | 1957, 1991 | ||||
| Ties: 1947 | ||||||
| Feb– 4-Month | 10.92in (277.37mm) | 10.07in (255.78mm) | 0.85in | 101st Driest | Driest since: | 1925 |
| 30th Wettest | Wettest since: | 2019 | ||||
| Ties: 2016 | ||||||
| Jan– 5-Month | 13.68in (347.47mm) | 12.38in (314.45mm) | 1.30in | 113th Driest | Driest since: | 1934 |
| 18th Wettest | Wettest since: | 2019 | ||||
| Dec 2019– 6-Month | 16.25in (412.75mm) | 14.72in (373.89mm) | 1.53in | 112th Driest | Driest since: | 1931 |
| 18th Wettest | Wettest since: | 2019 | ||||
| Nov 2019– 7-Month | 18.19in (462.03mm) | 16.95in (430.53mm) | 1.24in | 102nd Driest | Driest since: | 1934 |
| 28th Wettest | Wettest since: | 1983 | ||||
| Oct 2019– 8-Month | 21.38in (543.05mm) | 19.12in (485.65mm) | 2.26in | 116th Driest | Driest since: | 1934 |
| 14th Wettest | Wettest since: | 2019 | ||||
| Sep 2019– 9-Month | 23.83in (605.28mm) | 21.61in (548.89mm) | 2.22in | 111th Driest | Driest since: | 1934 |
| 19th Wettest | Wettest since: | 2019 | ||||
| Aug 2019– 10-Month | 26.61in (675.89mm) | 24.23in (615.44mm) | 2.38in | 111th Driest | Driest since: | 1918 |
| 19th Wettest | Wettest since: | 2019 | ||||
| Jul 2019– 11-Month | 29.37in (746.00mm) | 27.02in (686.31mm) | 2.35in | 110th Driest | Driest since: | 1931 |
| 20th Wettest | Wettest since: | 2019 | ||||
| Jun 2019– 12-Month | 32.74in (831.60mm) | 29.94in (760.48mm) | 2.80in | 113th Driest | Driest since: | 1934 |
| 17th Wettest | Wettest since: | 2019 | ||||
| Dec 2018– 18-Month | 51.75in (1,314.45mm) | 44.67in | 7.08in | 127th Driest | Driest since: | 1931 |
| 2nd Wettest | Wettest since: | 2019 | ||||
| Jun 2018– 24-Month | 70.45in (1,789.43mm) | 59.89in | 10.56in | 128th Driest | Driest since: | 1931 |
| 1st Wettest | Wettest to Date | 2020 | ||||
| Jun 2017– 36-Month | 100.48in (2,552.19mm) | 89.83in | 10.65in | 126th Driest | Driest since: | 1955 |
| 2nd Wettest | Wettest since: | 2019 | ||||
| Jun 2016– 48-Month | 133.86in (3,400.04mm) | 119.71in | 14.15in | 125th Driest | Driest since: | 1956 |
| 2nd Wettest | Wettest since: | 2019 | ||||
| Jun 2015– 60-Month | 168.43in (4,278.12mm) | 149.56in | 18.87in | 125th Driest | Driest since: | 1957 |
| 1st Wettest | Wettest to Date | 2020 | ||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published March 2025, retrieved on March 25, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings
