NOAA's National Centers for Environmental Information
Divisional Rankings
Oregon, Climate Division 1
December 2019 Palmer Z-Index Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Driest/Wettest Since | Record |
|---|---|---|---|---|---|---|
| December 2019 1-Month | -1.02 | -0.20 | -0.82 | 45th Driest | Driest since: | 2013 |
| 86th Wettest | Wettest since: | 2015 | ||||
| Ties: 1956 | ||||||
| Nov– 2-Month | -2.15 | -0.04 | -2.11 | 8th Driest | Driest since: | 2013 |
| 123rd Wettest | Wettest since: | 1973 | ||||
| Oct– 3-Month | -1.88 | -0.11 | -1.77 | 4th Driest | Driest since: | 2013 |
| 127th Wettest | Wettest since: | 2016 | ||||
| Sep– 4-Month | -0.70 | -0.05 | -0.65 | 30th Driest | Driest since: | 1976 |
| 101st Wettest | Wettest since: | 1973 | ||||
| Ties: 1928 | ||||||
| Aug– 5-Month | -0.78 | -0.07 | -0.71 | 27th Driest | Driest since: | 1936 |
| 104th Wettest | Wettest since: | 1968 | ||||
| Jul– 6-Month | -0.77 | -0.07 | -0.70 | 25th Driest | Driest since: | 2018 |
| 106th Wettest | Wettest since: | 1920 | ||||
| Jun– 7-Month | -0.92 | -0.06 | -0.86 | 14th Driest | Driest since: | 2018 |
| 117th Wettest | Wettest since: | 1920 | ||||
| Ties: 2000 | ||||||
| May– 8-Month | -0.91 | -0.05 | -0.86 | 16th Driest | Driest since: | 2018 |
| 115th Wettest | Wettest since: | 1968 | ||||
| Ties: 2002 | ||||||
| Apr– 9-Month | -0.43 | -0.03 | -0.40 | 40th Driest | Driest since: | 1938 |
| 91st Wettest | Wettest since: | 1937 | ||||
| Ties: 1932, 1934 | ||||||
| Mar– 10-Month | -0.75 | -0.05 | -0.70 | 22nd Driest | Driest since: | 1992 |
| 109th Wettest | Wettest since: | 1920, 1937 | ||||
| Feb– 11-Month | -0.45 | -0.04 | -0.41 | 39th Driest | Driest since: | 2018 |
| 92nd Wettest | Wettest since: | 1983 | ||||
| Jan– 12-Month | -0.54 | -0.04 | -0.50 | 38th Driest | Driest since: | 1992 |
| 93rd Wettest | Wettest since: | 1983 | ||||
| Ties: 2004, 2007 | ||||||
| Jul 2018– 18-Month | -0.91 | -0.04 | -0.87 | 7th Driest | Driest since: | 1992 |
| 123rd Wettest | Wettest since: | 1983, 1996 | ||||
| Jan 2018– 24-Month | -0.91 | -0.04 | -0.87 | 4th Driest | Driest since: | 1930 |
| 126th Wettest | Wettest since: | 1984 | ||||
| Ties: 1925 | ||||||
| Jan 2017– 36-Month | -0.40 | -0.03 | -0.37 | 29th Driest | Driest since: | 1930 |
| 100th Wettest | Wettest since: | 1997 | ||||
| Jan 2016– 48-Month | -0.30 | -0.04 | -0.26 | 37th Driest | Driest since: | 1926 |
| 91st Wettest | Wettest since: | 1998 | ||||
| Ties: 2007, 2015 | ||||||
| Jan 2015– 60-Month | -0.47 | -0.04 | -0.43 | 15th Driest | Driest since: | 1926, 1932 |
| 112th Wettest | Wettest since: | 1999 | ||||
| Ties: 1989 | ||||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 28, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings
