NOAA's National Centers for Environmental Information
Divisional Rankings
Oregon, Climate Division 1
December 1898 Palmer Z-Index Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Driest/Wettest Since | Record |
|---|---|---|---|---|---|---|
| December 1898 1-Month | -2.17 | -0.20 | -1.97 | 18th Driest | Driest to Date | 2013 |
| 113th Wettest | Wettest since: | 2015 | ||||
| Nov– 2-Month | -1.18 | -0.04 | -1.14 | 28th Driest | Driest to Date | 2013 |
| 103rd Wettest | Wettest since: | 1973 | ||||
| Oct– 3-Month | -1.09 | -0.11 | -0.98 | 19th Driest | Driest to Date | 2013 |
| 112th Wettest | Wettest since: | 2016 | ||||
| Sep– 4-Month | -0.25 | -0.05 | -0.20 | 57th Driest | Driest to Date | 1976 |
| 74th Wettest | Wettest since: | 1973 | ||||
| Aug– 5-Month | -0.25 | -0.07 | -0.18 | 62nd Driest | Driest since: | 1936 |
| 69th Wettest | Wettest since: | 1968 | ||||
| Jul– 6-Month | -0.16 | -0.07 | -0.09 | 69th Driest | Driest since: | 2018 |
| 62nd Wettest | Wettest since: | 1920 | ||||
| Jun– 7-Month | -0.06 | -0.06 | 0.00 | 80th Driest | Driest since: | 2018 |
| 51st Wettest | Wettest since: | 1920 | ||||
| May– 8-Month | -0.08 | -0.05 | -0.03 | 70th Driest | Driest to Date | 2018 |
| 61st Wettest | Wettest since: | 1968 | ||||
| Apr– 9-Month | -0.24 | -0.03 | -0.21 | 57th Driest | Driest to Date | 1938 |
| 74th Wettest | Wettest since: | 1937 | ||||
| Mar– 10-Month | -0.56 | -0.05 | -0.51 | 38th Driest | Driest to Date | 1992 |
| 93rd Wettest | Wettest since: | 1920, 1937 | ||||
| Feb– 11-Month | -0.41 | -0.04 | -0.37 | 44th Driest | Driest to Date | 2018 |
| 87th Wettest | Wettest since: | 1983 | ||||
| Jan– 12-Month | -0.56 | -0.04 | -0.52 | 35th Driest | Driest to Date | 1992 |
| 96th Wettest | Wettest since: | 1983 | ||||
| Jul 1897– 18-Month | -0.24 | -0.04 | -0.20 | 52nd Driest | Driest to Date | 1992 |
| 78th Wettest | Wettest since: | 1983, 1996 | ||||
| Jan 1897– 24-Month | -0.20 | -0.04 | -0.16 | 52nd Driest | Driest to Date | 1930 |
| 78th Wettest | Wettest since: | 1984 | ||||
| Jan 1896– 36-Month | 0.23 | -0.03 | 0.26 | 103rd Driest | Driest to Date | 1930 |
| 26th Wettest | Wettest since: | 1997 | ||||
| Jan 1895– 48-Month | 0.16 | -0.04 | 0.20 | 93rd Driest | Driest to Date | 1926 |
| 35th Wettest | Wettest to Date | 1998 |
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 26, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings
