NOAA's National Centers for Environmental Information
Divisional Rankings
Pennsylvania, Climate Division 3
October 2015 Palmer Z-Index Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Driest/Wettest Since | Record |
|---|---|---|---|---|---|---|
| October 2015 1-Month | 0.81 | 0.11 | 0.70 | 82nd Driest | Driest since: | 2024 |
| 49th Wettest | Wettest since: | 2005 | ||||
| Sep– 2-Month | 0.54 | 0.10 | 0.44 | 79th Driest | Driest since: | 2024 |
| 52nd Wettest | Wettest since: | 2011 | ||||
| Aug– 3-Month | -0.05 | 0.10 | -0.15 | 62nd Driest | Driest since: | 1930 |
| 69th Wettest | Wettest since: | 2011 | ||||
| Jul– 4-Month | -0.01 | 0.07 | -0.08 | 61st Driest | Driest since: | 1930 |
| 70th Wettest | Wettest since: | 2011 | ||||
| Jun– 5-Month | 0.83 | 0.07 | 0.76 | 95th Driest | Driest since: | 2024 |
| 36th Wettest | Wettest since: | 2018 | ||||
| Ties: 1960 | ||||||
| May– 6-Month | 0.14 | 0.00 | 0.14 | 71st Driest | Driest since: | 1964 |
| 60th Wettest | Wettest since: | 2018 | ||||
| Apr– 7-Month | -0.10 | 0.01 | -0.11 | 59th Driest | Driest since: | 1963 |
| 72nd Wettest | Wettest since: | 2018 | ||||
| Mar– 8-Month | 0.10 | 0.01 | 0.09 | 69th Driest | Driest since: | 1930 |
| 62nd Wettest | Wettest since: | 2011 | ||||
| Feb– 9-Month | -0.08 | 0.03 | -0.11 | 56th Driest | Driest since: | 1963 |
| 75th Wettest | Wettest since: | 2018 | ||||
| Jan– 10-Month | -0.07 | 0.04 | -0.11 | 55th Driest | Driest since: | 1963 |
| 76th Wettest | Wettest since: | 2018 | ||||
| Dec 2014– 11-Month | -0.05 | 0.04 | -0.09 | 55th Driest | Driest since: | 1963 |
| 75th Wettest | Wettest since: | 1975 | ||||
| Nov 2014– 12-Month | -0.04 | 0.01 | -0.05 | 58th Driest | Driest since: | 2002 |
| 72nd Wettest | Wettest since: | 2003 | ||||
| Ties: 1935 | ||||||
| May 2014– 18-Month | -0.04 | 0.01 | -0.05 | 57th Driest | Driest since: | 1965 |
| 73rd Wettest | Wettest since: | 2019 | ||||
| Nov 2013– 24-Month | 0.23 | 0.01 | 0.22 | 82nd Driest | Driest since: | 1966 |
| 47th Wettest | Wettest since: | 2019 | ||||
| Ties: 1985 | ||||||
| Nov 2012– 36-Month | 0.26 | 0.01 | 0.25 | 94th Driest | Driest since: | 1965 |
| 34th Wettest | Wettest since: | 1904 | ||||
| Nov 2011– 48-Month | 0.15 | 0.02 | 0.13 | 80th Driest | Driest since: | 1966 |
| 47th Wettest | Wettest since: | 2021 | ||||
| Ties: 1935, 2010 | ||||||
| Nov 2010– 60-Month | 0.38 | 0.02 | 0.36 | 107th Driest | Driest since: | 1966 |
| 19th Wettest | Wettest since: | 1906 | ||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on April 1, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings
