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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 1983 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1983 1-Month	4.84	0.09	4.75	129th Driest	Driest since: 1982	1955
December 1983 1-Month	4.84	0.09	4.75	2nd Wettest	Wettest to Date	1996
Nov–Dec 1983 2-Month	3.57	-0.09	3.66	129th Driest	Driest since: 1982	1931
Nov–Dec 1983 2-Month	3.57	-0.09	3.66	2nd Wettest	Wettest since: 1972	1972
Oct–Dec 1983 3-Month	2.64	-0.02	2.66	128th Driest	Driest since: 1982	1930
Oct–Dec 1983 3-Month	2.64	-0.02	2.66	3rd Wettest	Wettest to Date	1996
Sep–Dec 1983 4-Month	1.41	0.00	1.41	118th Driest	Driest since: 1982	2024
Sep–Dec 1983 4-Month	1.41	0.00	1.41	13th Wettest	Wettest since: 1977	2018
Aug–Dec 1983 5-Month	0.69	0.02	0.67	92nd Driest	Driest since: 1982	1930
Aug–Dec 1983 5-Month	0.69	0.02	0.67	39th Wettest	Wettest since: 1979	2011
Jul–Dec 1983 6-Month	0.13	0.01	0.12	67th Driest	Driest since: 1982	1930
Jul–Dec 1983 6-Month	0.13	0.01	0.12	64th Wettest	Wettest since: 1979	2018
Jun–Dec 1983 7-Month	0.26	0.02	0.24	72nd Driest	Driest since: 1982	1930
Jun–Dec 1983 7-Month	0.26	0.02	0.24	59th Wettest	Wettest since: 1979	2018
May–Dec 1983 8-Month	0.32	-0.02	0.34	80th Driest	Driest since: 1982	1964
May–Dec 1983 8-Month	0.32	-0.02	0.34	51st Wettest	Wettest since: 1979	2018
Apr–Dec 1983 9-Month	1.07	-0.01	1.08	119th Driest	Driest since: 1982	1930
Apr–Dec 1983 9-Month	1.07	-0.01	1.08	12th Wettest	Wettest since: 1975	2018
Mar–Dec 1983 10-Month	1.09	0.00	1.09	122nd Driest	Driest since: 1982	1930
Mar–Dec 1983 10-Month	1.09	0.00	1.09	9th Wettest	Wettest since: 1975	2011
Feb–Dec 1983 11-Month	1.04	0.02	1.02	121st Driest	Driest since: 1982	1930
Feb–Dec 1983 11-Month	1.04	0.02	1.02	10th Wettest	Wettest since: 1975	2018
Jan–Dec 1983 12-Month	0.92	0.03	0.89	119th Driest	Driest since: 1982	1930
Jan–Dec 1983 12-Month	0.92	0.03	0.89	12th Wettest	Wettest since: 1975	2018
Jul 1982–Dec 1983 18-Month	0.33	0.02	0.31	90th Driest	Driest since: 1982	1965
	0.33	0.02	0.31	40th Wettest	Wettest since: 1979	2019
	Ties: 1960
Jan 1982–Dec 1983 24-Month	0.44	0.03	0.41	101st Driest	Driest since: 1982	1931
Jan 1982–Dec 1983 24-Month	0.44	0.03	0.41	29th Wettest	Wettest since: 1979	2019
Jan 1981–Dec 1983 36-Month	0.20	0.03	0.17	80th Driest	Driest since: 1982	1965
	0.20	0.03	0.17	49th Wettest	Wettest since: 1979	2020
	Ties: 1899, 1929
Jan 1980–Dec 1983 48-Month	-0.19	0.03	-0.22	26th Driest	Driest since: 1982	1966
Jan 1980–Dec 1983 48-Month	-0.19	0.03	-0.22	102nd Wettest	Wettest since: 1982	2021
Jan 1979–Dec 1983 60-Month	0.03	0.03	0.00	53rd Driest	Driest since: 1982	1966
	0.03	0.03	0.00	74th Wettest	Wettest since: 1981	1976, 1979, 2021
	Ties: 1916, 1960

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 1983 Palmer Z-Index Rankings

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