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 5

October 1993 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
October 1993 1-Month	0.08	0.02	0.06	73rd Driest	Driest since: 1992	1963
	0.08	0.02	0.06	58th Wettest	Wettest since: 1990	1976
	Ties: 1983
Sep–Oct 1993 2-Month	1.02	0.09	0.93	98th Driest	Driest since: 1992	1930
Sep–Oct 1993 2-Month	1.02	0.09	0.93	33rd Wettest	Wettest since: 1990	2011
Aug–Oct 1993 3-Month	0.38	0.10	0.28	82nd Driest	Driest since: 1992	1930
Aug–Oct 1993 3-Month	0.38	0.10	0.28	49th Wettest	Wettest since: 1990	2011
Jul–Oct 1993 4-Month	-0.31	0.08	-0.39	52nd Driest	Driest since: 1991	1930
Jul–Oct 1993 4-Month	-0.31	0.08	-0.39	79th Wettest	Wettest since: 1992	2018
Jun–Oct 1993 5-Month	-0.40	0.10	-0.50	43rd Driest	Driest since: 1991	1930
Jun–Oct 1993 5-Month	-0.40	0.10	-0.50	88th Wettest	Wettest since: 1992	2018
May–Oct 1993 6-Month	-0.75	0.04	-0.79	26th Driest	Driest since: 1991	1991
May–Oct 1993 6-Month	-0.75	0.04	-0.79	105th Wettest	Wettest since: 1992	2018
Apr–Oct 1993 7-Month	0.28	0.07	0.21	75th Driest	Driest since: 1992	1991
Apr–Oct 1993 7-Month	0.28	0.07	0.21	56th Wettest	Wettest since: 1990	2011
Mar–Oct 1993 8-Month	0.73	0.07	0.66	100th Driest	Driest since: 1992	1991
Mar–Oct 1993 8-Month	0.73	0.07	0.66	31st Wettest	Wettest since: 1990	2011
Feb–Oct 1993 9-Month	0.58	0.07	0.51	95th Driest	Driest since: 1992	1991
	0.58	0.07	0.51	36th Wettest	Wettest since: 1990	2011
	Ties: 1915
Jan–Oct 1993 10-Month	0.45	0.09	0.36	91st Driest	Driest since: 1992	1991
Jan–Oct 1993 10-Month	0.45	0.09	0.36	40th Wettest	Wettest since: 1990	2011
Dec 1992–Oct 1993 11-Month	0.44	0.09	0.35	86th Driest	Driest since: 1992	1930
	0.44	0.09	0.35	44th Wettest	Wettest since: 1984	2011
	Ties: 1960
Nov 1992–Oct 1993 12-Month	0.58	0.06	0.52	101st Driest	Driest since: 1992	1931
Nov 1992–Oct 1993 12-Month	0.58	0.06	0.52	29th Wettest	Wettest since: 1984	2011
May 1992–Oct 1993 18-Month	0.46	0.05	0.41	96th Driest	Driest since: 1992	1931
	0.46	0.05	0.41	34th Wettest	Wettest since: 1990	2019
	Ties: 1947
Nov 1991–Oct 1993 24-Month	0.17	0.05	0.12	72nd Driest	Driest since: 1992	1931
	0.17	0.05	0.12	57th Wettest	Wettest since: 1990	2019
	Ties: 1906
Nov 1990–Oct 1993 36-Month	-0.29	0.05	-0.34	21st Driest	Driest since: 1992	1932
Nov 1990–Oct 1993 36-Month	-0.29	0.05	-0.34	107th Wettest	Wettest since: 1991	2019
Nov 1989–Oct 1993 48-Month	-0.13	0.05	-0.18	29th Driest	Driest since: 1992	1966
	-0.13	0.05	-0.18	98th Wettest	Wettest since: 1990	2006
	Ties: 1926, 1982
Nov 1988–Oct 1993 60-Month	-0.06	0.05	-0.11	35th Driest	Driest since: 1992	1966
Nov 1988–Oct 1993 60-Month	-0.06	0.05	-0.11	91st Wettest	Wettest since: 1990	1976

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on April 1, 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 5

October 1993 Palmer Z-Index Rankings

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