NOAA's National Centers for Environmental Information
Divisional Rankings
Pennsylvania, Climate Division 2
November 1991 Palmer Z-Index Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Driest/Wettest Since | Record |
|---|---|---|---|---|---|---|
| November 1991 1-Month | -1.25 | -0.28 | -0.97 | 46th Driest | Driest since: | 1931 |
| 85th Wettest | Wettest since: | 2018 | ||||
| Oct– 2-Month | -1.22 | -0.07 | -1.15 | 31st Driest | Driest since: | 2024 |
| 100th Wettest | Wettest since: | 1932 | ||||
| Sep– 3-Month | -1.22 | -0.03 | -1.19 | 20th Driest | Driest since: | 2024 |
| 111th Wettest | Wettest since: | 2011 | ||||
| Aug– 4-Month | -1.13 | 0.00 | -1.13 | 24th Driest | Driest since: | 1930 |
| 107th Wettest | Wettest since: | 2011 | ||||
| Jul– 5-Month | -1.18 | -0.01 | -1.17 | 22nd Driest | Driest since: | 1964 |
| 109th Wettest | Wettest since: | 2018 | ||||
| Jun– 6-Month | -1.44 | 0.01 | -1.45 | 11th Driest | Driest since: | 1930 |
| 120th Wettest | Wettest since: | 2018 | ||||
| May– 7-Month | -1.54 | -0.04 | -1.50 | 9th Driest | Driest since: | 1964 |
| 122nd Wettest | Wettest since: | 2018 | ||||
| Apr– 8-Month | -1.52 | -0.02 | -1.50 | 7th Driest | Driest since: | 1930 |
| 124th Wettest | Wettest since: | 2018 | ||||
| Mar– 9-Month | -1.29 | -0.01 | -1.28 | 9th Driest | Driest since: | 1930 |
| 122nd Wettest | Wettest since: | 2011 | ||||
| Ties: 1949 | ||||||
| Feb– 10-Month | -1.35 | 0.01 | -1.36 | 4th Driest | Driest since: | 1941 |
| 127th Wettest | Wettest since: | 2018 | ||||
| Jan– 11-Month | -1.29 | 0.03 | -1.32 | 3rd Driest | Driest since: | 1930 |
| 128th Wettest | Wettest since: | 2018 | ||||
| Dec 1990– 12-Month | -0.91 | 0.03 | -0.94 | 10th Driest | Driest since: | 1930 |
| 120th Wettest | Wettest since: | 2018 | ||||
| Jun 1990– 18-Month | -0.58 | 0.02 | -0.60 | 16th Driest | Driest since: | 1965 |
| 114th Wettest | Wettest since: | 2019 | ||||
| Dec 1989– 24-Month | -0.49 | 0.03 | -0.52 | 12th Driest | Driest since: | 1931 |
| 117th Wettest | Wettest since: | 2019 | ||||
| Dec 1988– 36-Month | -0.30 | 0.03 | -0.33 | 19th Driest | Driest since: | 1965 |
| 109th Wettest | Wettest since: | 2019 | ||||
| Dec 1987– 48-Month | -0.32 | 0.03 | -0.35 | 12th Driest | Driest since: | 1966 |
| 115th Wettest | Wettest since: | 2021 | ||||
| Dec 1986– 60-Month | -0.26 | 0.03 | -0.29 | 15th Driest | Driest since: | 1966 |
| 111th Wettest | Wettest since: | 1979 | ||||
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
