NOAA's National Centers for Environmental Information
Divisional Rankings
Pennsylvania, Climate Division 6
December 2015 Palmer Z-Index Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Driest/Wettest Since | Record |
|---|---|---|---|---|---|---|
| December 2015 1-Month | 0.11 | -0.08 | 0.19 | 70th Driest | Driest since: | 1930 |
| 61st Wettest | Wettest since: | 1901 | ||||
| Nov– 2-Month | -0.65 | -0.15 | -0.50 | 43rd Driest | Driest since: | 1930 |
| 88th Wettest | Wettest since: | 1972 | ||||
| Oct– 3-Month | -0.48 | -0.09 | -0.39 | 38th Driest | Driest since: | 1930 |
| 93rd Wettest | Wettest since: | 1996 | ||||
| Sep– 4-Month | -0.55 | -0.04 | -0.51 | 32nd Driest | Driest since: | 1964 |
| 99th Wettest | Wettest since: | 2011 | ||||
| Ties: 1924 | ||||||
| Aug– 5-Month | -0.62 | -0.01 | -0.61 | 30th Driest | Driest since: | 1964 |
| 101st Wettest | Wettest since: | 2018 | ||||
| Jul– 6-Month | -0.36 | 0.01 | -0.37 | 39th Driest | Driest since: | 1964 |
| 92nd Wettest | Wettest since: | 2018 | ||||
| Jun– 7-Month | 0.17 | 0.03 | 0.14 | 67th Driest | Driest since: | 1964 |
| 64th Wettest | Wettest since: | 2018 | ||||
| Ties: 1919 | ||||||
| May– 8-Month | -0.17 | 0.01 | -0.18 | 45th Driest | Driest since: | 1964 |
| 86th Wettest | Wettest since: | 2018 | ||||
| Apr– 9-Month | 0.06 | 0.03 | 0.03 | 56th Driest | Driest since: | 1964 |
| 75th Wettest | Wettest since: | 2018 | ||||
| Mar– 10-Month | -0.09 | 0.02 | -0.11 | 50th Driest | Driest since: | 1964 |
| 81st Wettest | Wettest since: | 2011 | ||||
| Ties: 1924, 1987 | ||||||
| Feb– 11-Month | -0.19 | 0.01 | -0.20 | 42nd Driest | Driest since: | 1964 |
| 89th Wettest | Wettest since: | 2011 | ||||
| Jan– 12-Month | -0.27 | 0.03 | -0.30 | 38th Driest | Driest since: | 1991 |
| 93rd Wettest | Wettest since: | 2011, 2018 | ||||
| Jul 2014– 18-Month | -0.26 | 0.02 | -0.28 | 35th Driest | Driest since: | 1965 |
| 95th Wettest | Wettest since: | 2019 | ||||
| Jan 2014– 24-Month | -0.18 | 0.03 | -0.21 | 40th Driest | Driest since: | 1964 |
| 90th Wettest | Wettest since: | 2019 | ||||
| Jan 2013– 36-Month | -0.11 | 0.03 | -0.14 | 41st Driest | Driest since: | 1965 |
| 88th Wettest | Wettest since: | 2019 | ||||
| Ties: 1962 | ||||||
| Jan 2012– 48-Month | -0.05 | 0.03 | -0.08 | 47th Driest | Driest since: | 1966 |
| 81st Wettest | Wettest since: | 2006 | ||||
| Ties: 1930 | ||||||
| Jan 2011– 60-Month | 0.47 | 0.03 | 0.44 | 103rd Driest | Driest since: | 1966 |
| 24th Wettest | Wettest since: | 2021 | ||||
| Ties: 1918 | ||||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 31, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings
