Climate at a Glance | Divisional Rankings | National Centers for Environmental Information (NCEI)

Divisional Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska or Hawaii. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Pennsylvania, Climate Division 2

December 1925 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1925 1-Month	-0.83	0.09	-0.92	42nd Driest	Driest since: 1924	1955
	-0.83	0.09	-0.92	89th Wettest	Wettest since: 1923	1996
	Ties: 1917
Nov–Dec 1925 2-Month	-0.08	-0.09	0.01	68th Driest	Driest since: 1924	1931
Nov–Dec 1925 2-Month	-0.08	-0.09	0.01	63rd Wettest	Wettest since: 1921	1972
Oct–Dec 1925 3-Month	0.77	-0.02	0.79	96th Driest	Driest since: 1924	1930
Oct–Dec 1925 3-Month	0.77	-0.02	0.79	35th Wettest	Wettest since: 1911	1996
Sep–Dec 1925 4-Month	0.38	0.00	0.38	78th Driest	Driest since: 1924	2024
Sep–Dec 1925 4-Month	0.38	0.00	0.38	53rd Wettest	Wettest since: 1920	2018
Aug–Dec 1925 5-Month	0.05	0.02	0.03	61st Driest	Driest since: 1924	1930
Aug–Dec 1925 5-Month	0.05	0.02	0.03	70th Wettest	Wettest since: 1920	2011
Jul–Dec 1925 6-Month	0.54	0.01	0.53	87th Driest	Driest since: 1924	1930
Jul–Dec 1925 6-Month	0.54	0.01	0.53	44th Wettest	Wettest since: 1920	2018
Jun–Dec 1925 7-Month	0.31	0.02	0.29	81st Driest	Driest since: 1924	1930
Jun–Dec 1925 7-Month	0.31	0.02	0.29	50th Wettest	Wettest since: 1920	2018
May–Dec 1925 8-Month	0.26	-0.02	0.28	76th Driest	Driest since: 1924	1964
May–Dec 1925 8-Month	0.26	-0.02	0.28	55th Wettest	Wettest since: 1920	2018
Apr–Dec 1925 9-Month	0.01	-0.01	0.02	59th Driest	Driest since: 1923	1930
Apr–Dec 1925 9-Month	0.01	-0.01	0.02	72nd Wettest	Wettest since: 1924	2018
Mar–Dec 1925 10-Month	-0.08	0.00	-0.08	55th Driest	Driest since: 1924	1930
Mar–Dec 1925 10-Month	-0.08	0.00	-0.08	76th Wettest	Wettest since: 1920	2011
Feb–Dec 1925 11-Month	-0.09	0.02	-0.11	52nd Driest	Driest since: 1923	1930
Feb–Dec 1925 11-Month	-0.09	0.02	-0.11	79th Wettest	Wettest since: 1924	2018
Jan–Dec 1925 12-Month	0.07	0.03	0.04	63rd Driest	Driest since: 1923	1930
Jan–Dec 1925 12-Month	0.07	0.03	0.04	68th Wettest	Wettest since: 1924	2018
Jul 1924–Dec 1925 18-Month	-0.14	0.02	-0.16	45th Driest	Driest since: 1923	1965
Jul 1924–Dec 1925 18-Month	-0.14	0.02	-0.16	85th Wettest	Wettest since: 1924	2019
Jan 1924–Dec 1925 24-Month	0.09	0.03	0.06	70th Driest	Driest since: 1924	1931
Jan 1924–Dec 1925 24-Month	0.09	0.03	0.06	60th Wettest	Wettest since: 1921	2019
Jan 1923–Dec 1925 36-Month	-0.12	0.03	-0.15	39th Driest	Driest since: 1924	1965
Jan 1923–Dec 1925 36-Month	-0.12	0.03	-0.15	90th Wettest	Wettest since: 1922	2020
Jan 1922–Dec 1925 48-Month	-0.27	0.03	-0.30	17th Driest	Driest since: 1924	1966
Jan 1922–Dec 1925 48-Month	-0.27	0.03	-0.30	111th Wettest	Wettest since: 1923	2021
Jan 1921–Dec 1925 60-Month	-0.25	0.03	-0.28	16th Driest	Driest to Date	1966
Jan 1921–Dec 1925 60-Month	-0.25	0.03	-0.28	111th Wettest	Wettest since: 1924	1976, 1979, 2021

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

Climate at a Glance Divisional Rankings

Divisional Rankings

Pennsylvania, Climate Division 2

December 1925 Palmer Z-Index Rankings

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