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 1902 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1902 1-Month	4.06	0.09	3.97	127th Driest	Driest since: 1901	1955
December 1902 1-Month	4.06	0.09	3.97	4th Wettest	Wettest to Date	1996
Nov–Dec 1902 2-Month	0.81	-0.09	0.90	98th Driest	Driest since: 1900	1931
Nov–Dec 1902 2-Month	0.81	-0.09	0.90	33rd Wettest	Wettest since: 1901	1972
Oct–Dec 1902 3-Month	1.28	-0.02	1.30	115th Driest	Driest since: 1901	1930
Oct–Dec 1902 3-Month	1.28	-0.02	1.30	16th Wettest	Wettest to Date	1996
Sep–Dec 1902 4-Month	1.75	0.00	1.75	124th Driest	Driest since: 1901	2024
Sep–Dec 1902 4-Month	1.75	0.00	1.75	7th Wettest	Wettest to Date	2018
Aug–Dec 1902 5-Month	1.31	0.02	1.29	118th Driest	Driest since: 1901	1930
Aug–Dec 1902 5-Month	1.31	0.02	1.29	13th Wettest	Wettest to Date	2011
Jul–Dec 1902 6-Month	1.14	0.01	1.13	116th Driest	Driest since: 1901	1930
Jul–Dec 1902 6-Month	1.14	0.01	1.13	15th Wettest	Wettest to Date	2018
Jun–Dec 1902 7-Month	1.38	0.02	1.36	115th Driest	Driest since: 1901	1930
Jun–Dec 1902 7-Month	1.38	0.02	1.36	16th Wettest	Wettest to Date	2018
May–Dec 1902 8-Month	0.87	-0.02	0.89	111th Driest	Driest since: 1901	1964
May–Dec 1902 8-Month	0.87	-0.02	0.89	20th Wettest	Wettest to Date	2018
Apr–Dec 1902 9-Month	0.76	-0.01	0.77	110th Driest	Driest since: 1901	1930
Apr–Dec 1902 9-Month	0.76	-0.01	0.77	21st Wettest	Wettest to Date	2018
Mar–Dec 1902 10-Month	0.75	0.00	0.75	109th Driest	Driest since: 1900	1930
Mar–Dec 1902 10-Month	0.75	0.00	0.75	22nd Wettest	Wettest since: 1901	2011
Feb–Dec 1902 11-Month	1.11	0.02	1.09	122nd Driest	Driest since: 1901	1930
Feb–Dec 1902 11-Month	1.11	0.02	1.09	9th Wettest	Wettest to Date	2018
Jan–Dec 1902 12-Month	1.05	0.03	1.02	123rd Driest	Driest since: 1901	1930
Jan–Dec 1902 12-Month	1.05	0.03	1.02	8th Wettest	Wettest to Date	2018
Jul 1901–Dec 1902 18-Month	0.97	0.02	0.95	121st Driest	Driest since: 1901	1965
Jul 1901–Dec 1902 18-Month	0.97	0.02	0.95	9th Wettest	Wettest to Date	2019
Jan 1901–Dec 1902 24-Month	0.73	0.03	0.70	116th Driest	Driest since: 1901	1931
Jan 1901–Dec 1902 24-Month	0.73	0.03	0.70	14th Wettest	Wettest to Date	2019
Jan 1900–Dec 1902 36-Month	0.24	0.03	0.21	88th Driest	Driest since: 1901	1965
Jan 1900–Dec 1902 36-Month	0.24	0.03	0.21	41st Wettest	Wettest to Date	2020
Jan 1899–Dec 1902 48-Month	0.19	0.03	0.16	82nd Driest	Driest since: 1901	1966
Jan 1899–Dec 1902 48-Month	0.19	0.03	0.16	46th Wettest	Wettest to Date	2021
Jan 1898–Dec 1902 60-Month	0.18	0.03	0.15	79th Driest	Driest since: 1901	1966
Jan 1898–Dec 1902 60-Month	0.18	0.03	0.15	48th Wettest	Wettest to Date	1976, 1979, 2021

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 26, 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 1902 Palmer Z-Index Rankings

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