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 1972 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1972 1-Month	2.66	0.09	2.57	120th Driest	Driest since: 1971	1955
December 1972 1-Month	2.66	0.09	2.57	11th Wettest	Wettest since: 1957	1996
Nov–Dec 1972 2-Month	3.75	-0.09	3.84	130th Driest	Driest since: 1971	1931
Nov–Dec 1972 2-Month	3.75	-0.09	3.84	1st Wettest	Wettest to Date	1972
Oct–Dec 1972 3-Month	2.38	-0.02	2.40	125th Driest	Driest since: 1971	1930
Oct–Dec 1972 3-Month	2.38	-0.02	2.40	6th Wettest	Wettest since: 1927	1996
Sep–Dec 1972 4-Month	1.14	0.00	1.14	113th Driest	Driest since: 1971	2024
Sep–Dec 1972 4-Month	1.14	0.00	1.14	18th Wettest	Wettest since: 1952	2018
Aug–Dec 1972 5-Month	0.51	0.02	0.49	82nd Driest	Driest since: 1970	1930
Aug–Dec 1972 5-Month	0.51	0.02	0.49	49th Wettest	Wettest since: 1971	2011
Jul–Dec 1972 6-Month	0.21	0.01	0.20	72nd Driest	Driest since: 1970	1930
Jul–Dec 1972 6-Month	0.21	0.01	0.20	59th Wettest	Wettest since: 1971	2018
Jun–Dec 1972 7-Month	1.59	0.02	1.57	123rd Driest	Driest since: 1971	1930
Jun–Dec 1972 7-Month	1.59	0.02	1.57	8th Wettest	Wettest since: 1942	2018
May–Dec 1972 8-Month	1.56	-0.02	1.58	125th Driest	Driest since: 1971	1964
May–Dec 1972 8-Month	1.56	-0.02	1.58	6th Wettest	Wettest since: 1942	2018
Apr–Dec 1972 9-Month	1.35	-0.01	1.36	124th Driest	Driest since: 1971	1930
Apr–Dec 1972 9-Month	1.35	-0.01	1.36	7th Wettest	Wettest since: 1952	2018
Mar–Dec 1972 10-Month	1.23	0.00	1.23	124th Driest	Driest since: 1971	1930
Mar–Dec 1972 10-Month	1.23	0.00	1.23	7th Wettest	Wettest since: 1952	2011
Feb–Dec 1972 11-Month	1.27	0.02	1.25	126th Driest	Driest since: 1971	1930
Feb–Dec 1972 11-Month	1.27	0.02	1.25	5th Wettest	Wettest to Date	2018
Jan–Dec 1972 12-Month	1.15	0.03	1.12	124th Driest	Driest since: 1971	1930
Jan–Dec 1972 12-Month	1.15	0.03	1.12	7th Wettest	Wettest since: 1952	2018
Jul 1971–Dec 1972 18-Month	1.02	0.02	1.00	122nd Driest	Driest since: 1971	1965
Jul 1971–Dec 1972 18-Month	1.02	0.02	1.00	8th Wettest	Wettest since: 1952	2019
Jan 1971–Dec 1972 24-Month	0.72	0.03	0.69	115th Driest	Driest since: 1971	1931
Jan 1971–Dec 1972 24-Month	0.72	0.03	0.69	15th Wettest	Wettest since: 1953	2019
Jan 1970–Dec 1972 36-Month	0.41	0.03	0.38	105th Driest	Driest since: 1971	1965
Jan 1970–Dec 1972 36-Month	0.41	0.03	0.38	24th Wettest	Wettest since: 1953	2020
Jan 1969–Dec 1972 48-Month	0.29	0.03	0.26	97th Driest	Driest since: 1971	1966
Jan 1969–Dec 1972 48-Month	0.29	0.03	0.26	31st Wettest	Wettest since: 1954	2021
Jan 1968–Dec 1972 60-Month	0.11	0.03	0.08	75th Driest	Driest since: 1971	1966
Jan 1968–Dec 1972 60-Month	0.11	0.03	0.08	52nd Wettest	Wettest since: 1956	1976, 1979, 2021

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 24, 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 1972 Palmer Z-Index Rankings

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