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 4

January 1992 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
January 1992 1-Month	-1.40	0.23	-1.63	20th Driest	Driest since: 1985	1981
January 1992 1-Month	-1.40	0.23	-1.63	112th Wettest	Wettest since: 1991	1979
Dec 1991–Jan 1992 2-Month	-0.93	0.12	-1.05	29th Driest	Driest since: 1989	2002
Dec 1991–Jan 1992 2-Month	-0.93	0.12	-1.05	102nd Wettest	Wettest since: 1991	1978
Nov 1991–Jan 1992 3-Month	-1.40	0.01	-1.41	18th Driest	Driest since: 1983	2002
	-1.40	0.01	-1.41	113th Wettest	Wettest since: 1991	2019
	Ties: 1954
Oct 1991–Jan 1992 4-Month	-1.43	0.00	-1.43	19th Driest	Driest since: 1983	2002
Oct 1991–Jan 1992 4-Month	-1.43	0.00	-1.43	112th Wettest	Wettest since: 1991	2019
Sep 1991–Jan 1992 5-Month	-1.17	0.03	-1.20	20th Driest	Driest since: 1983	1931
Sep 1991–Jan 1992 5-Month	-1.17	0.03	-1.20	111th Wettest	Wettest since: 1991	2019
Aug 1991–Jan 1992 6-Month	-1.21	0.06	-1.27	19th Driest	Driest since: 1983	1931
Aug 1991–Jan 1992 6-Month	-1.21	0.06	-1.27	112th Wettest	Wettest since: 1991	2019
Jul 1991–Jan 1992 7-Month	-1.54	0.08	-1.62	7th Driest	Driest since: 1983	1931
Jul 1991–Jan 1992 7-Month	-1.54	0.08	-1.62	124th Wettest	Wettest since: 1991	2019
Jun 1991–Jan 1992 8-Month	-1.87	0.09	-1.96	3rd Driest	Driest since: 1931	1931
Jun 1991–Jan 1992 8-Month	-1.87	0.09	-1.96	128th Wettest	Wettest since: 1991	2019
May 1991–Jan 1992 9-Month	-1.94	0.05	-1.99	3rd Driest	Driest since: 1931	1931
May 1991–Jan 1992 9-Month	-1.94	0.05	-1.99	128th Wettest	Wettest since: 1991	2019
Apr 1991–Jan 1992 10-Month	-1.91	0.04	-1.95	3rd Driest	Driest since: 1931	1931
Apr 1991–Jan 1992 10-Month	-1.91	0.04	-1.95	128th Wettest	Wettest since: 1991	2019
Mar 1991–Jan 1992 11-Month	-1.71	0.04	-1.75	3rd Driest	Driest since: 1931	1931
Mar 1991–Jan 1992 11-Month	-1.71	0.04	-1.75	128th Wettest	Wettest since: 1991	2019
Feb 1991–Jan 1992 12-Month	-1.72	0.05	-1.77	3rd Driest	Driest since: 1931	1931
Feb 1991–Jan 1992 12-Month	-1.72	0.05	-1.77	128th Wettest	Wettest since: 1991	2019
Aug 1990–Jan 1992 18-Month	-0.78	0.05	-0.83	13th Driest	Driest since: 1967	1932
Aug 1990–Jan 1992 18-Month	-0.78	0.05	-0.83	117th Wettest	Wettest since: 1991	2019
Feb 1990–Jan 1992 24-Month	-0.78	0.05	-0.83	12th Driest	Driest since: 1989	1932
	-0.78	0.05	-0.83	118th Wettest	Wettest since: 1991	2020
	Ties: 1989
Feb 1989–Jan 1992 36-Month	-0.33	0.05	-0.38	22nd Driest	Driest since: 1990	1967
	-0.33	0.05	-0.38	107th Wettest	Wettest since: 1991	2020
	Ties: 1990
Feb 1988–Jan 1992 48-Month	-0.51	0.06	-0.57	10th Driest	Driest since: 1989	1967
Feb 1988–Jan 1992 48-Month	-0.51	0.06	-0.57	118th Wettest	Wettest since: 1991	1997
Feb 1987–Jan 1992 60-Month	-0.51	0.05	-0.56	8th Driest	Driest since: 1970	1967
Feb 1987–Jan 1992 60-Month	-0.51	0.05	-0.56	119th Wettest	Wettest since: 1991	1997

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 30, 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 4

January 1992 Palmer Z-Index Rankings

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