NOAA's National Centers for Environmental Information
National Rankings
Contiguous U.S.
August 2020 Precipitation Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Driest/Wettest Since | Record |
|---|---|---|---|---|---|---|
| August 2020 1-Month | 2.42in (61.47mm) | 2.62in (66.55mm) | -0.20in | 37th Driest | Driest since: | 1929 |
| 94th Wettest | Wettest since: | 1977 | ||||
| Ties: 1900 | ||||||
| Jul– 2-Month | 5.36in (136.14mm) | 5.39in (136.91mm) | -0.03in | 49th Driest | Driest since: | 1930 |
| 82nd Wettest | Wettest since: | 1915 | ||||
| Jun– 3-Month | 8.09in (205.49mm) | 8.32in (211.33mm) | -0.23in | 36th Driest | Driest since: | 1930 |
| 95th Wettest | Wettest since: | 1928 | ||||
| Ties: 1990 | ||||||
| May– 4-Month | 11.18in (283.97mm) | 11.23in (285.24mm) | -0.05in | 54th Driest | Driest since: | 1936 |
| 77th Wettest | Wettest since: | 1915 | ||||
| Apr– 5-Month | 13.70in (347.98mm) | 13.74in (349.00mm) | -0.04in | 54th Driest | Driest since: | 1934 |
| 77th Wettest | Wettest since: | 2019 | ||||
| Ties: 1921 | ||||||
| Mar– 6-Month | 16.56in (420.62mm) | 16.25in (412.75mm) | 0.31in | 69th Driest | Driest since: | 1936 |
| 62nd Wettest | Wettest since: | 1905, 2019 | ||||
| Feb– 7-Month | 19.01in (482.85mm) | 18.39in (467.11mm) | 0.62in | 75th Driest | Driest since: | 1934 |
| 56th Wettest | Wettest since: | 2019 | ||||
| Jan– 8-Month | 21.77in (552.96mm) | 20.70in (525.78mm) | 1.07in | 96th Driest | Driest since: | 1934 |
| 35th Wettest | Wettest since: | 2019 | ||||
| Dec 2019– 9-Month | 24.34in (618.24mm) | 23.04in (585.22mm) | 1.30in | 97th Driest | Driest since: | 1931 |
| 33rd Wettest | Wettest since: | 2019 | ||||
| Nov 2019– 10-Month | 26.28in (667.51mm) | 25.27in (641.86mm) | 1.01in | 84th Driest | Driest since: | 1934 |
| 46th Wettest | Wettest since: | 2019 | ||||
| Oct 2019– 11-Month | 29.47in (748.54mm) | 27.44in (696.98mm) | 2.03in | 105th Driest | Driest since: | 1934 |
| 25th Wettest | Wettest since: | 2019 | ||||
| Sep 2019– 12-Month | 31.92in (810.77mm) | 29.93in (760.22mm) | 1.99in | 104th Driest | Driest since: | 1934 |
| 26th Wettest | Wettest since: | 2019 | ||||
| Ties: 1982 | ||||||
| Mar 2019– 18-Month | 50.75in (1,289.05mm) | 46.20in | 4.55in | 121st Driest | Driest since: | 1931 |
| 9th Wettest | Wettest since: | 2019 | ||||
| Sep 2018– 24-Month | 69.55in (1,766.57mm) | 59.88in | 9.67in | 128th Driest | Driest since: | 1918 |
| 1st Wettest | Wettest to Date | 2020 | ||||
| Sep 2017– 36-Month | 99.29in (2,521.97mm) | 89.82in | 9.47in | 123rd Driest | Driest since: | 1956 |
| 5th Wettest | Wettest since: | 2019 | ||||
| Sep 2016– 48-Month | 133.09in (3,380.49mm) | 119.71in | 13.38in | 125th Driest | Driest since: | 1956 |
| 2nd Wettest | Wettest since: | 2019 | ||||
| Sep 2015– 60-Month | 167.33in (4,250.18mm) | 149.56in | 17.77in | 125th Driest | Driest since: | 1934 |
| 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 31, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings
