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 2008 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
October 2008 1-Month	-0.34	0.02	-0.36	63rd Driest	Driest since: 2007	1963
October 2008 1-Month	-0.34	0.02	-0.36	68th Wettest	Wettest since: 2006	1976
Sep–Oct 2008 2-Month	0.75	0.09	0.66	89th Driest	Driest since: 2007	1930
Sep–Oct 2008 2-Month	0.75	0.09	0.66	42nd Wettest	Wettest since: 2006	2011
Aug–Oct 2008 3-Month	-0.11	0.10	-0.21	61st Driest	Driest since: 2007	1930
Aug–Oct 2008 3-Month	-0.11	0.10	-0.21	70th Wettest	Wettest since: 2006	2011
Jul–Oct 2008 4-Month	-0.10	0.08	-0.18	59th Driest	Driest since: 2007	1930
	-0.10	0.08	-0.18	72nd Wettest	Wettest since: 2006	2018
	Ties: 1971
Jun–Oct 2008 5-Month	-0.27	0.10	-0.37	52nd Driest	Driest since: 2007	1930
Jun–Oct 2008 5-Month	-0.27	0.10	-0.37	79th Wettest	Wettest since: 2006	2018
May–Oct 2008 6-Month	-0.14	0.04	-0.18	59th Driest	Driest since: 2007	1991
May–Oct 2008 6-Month	-0.14	0.04	-0.18	72nd Wettest	Wettest since: 2006	2018
Apr–Oct 2008 7-Month	-0.18	0.07	-0.25	48th Driest	Driest since: 2007	1991
Apr–Oct 2008 7-Month	-0.18	0.07	-0.25	83rd Wettest	Wettest since: 2006	2011
Mar–Oct 2008 8-Month	0.20	0.07	0.13	68th Driest	Driest since: 2007	1991
	0.20	0.07	0.13	63rd Wettest	Wettest since: 2006	2011
	Ties: 1952
Feb–Oct 2008 9-Month	0.60	0.07	0.53	97th Driest	Driest since: 2007	1991
Feb–Oct 2008 9-Month	0.60	0.07	0.53	34th Wettest	Wettest since: 2006	2011
Jan–Oct 2008 10-Month	0.45	0.09	0.36	91st Driest	Driest since: 2007	1991
	0.45	0.09	0.36	40th Wettest	Wettest since: 2006	2011
	Ties: 1993
Dec 2007–Oct 2008 11-Month	0.58	0.09	0.49	98th Driest	Driest since: 2007	1930
Dec 2007–Oct 2008 11-Month	0.58	0.09	0.49	32nd Wettest	Wettest since: 2006	2011
Nov 2007–Oct 2008 12-Month	0.55	0.06	0.49	100th Driest	Driest since: 2007	1931
	0.55	0.06	0.49	30th Wettest	Wettest since: 2006	2011
	Ties: 1927
May 2007–Oct 2008 18-Month	-0.10	0.05	-0.15	46th Driest	Driest since: 2002	1931
	-0.10	0.05	-0.15	84th Wettest	Wettest since: 2007	2019
	Ties: 2000
Nov 2006–Oct 2008 24-Month	-0.04	0.05	-0.09	48th Driest	Driest since: 2002	1931
Nov 2006–Oct 2008 24-Month	-0.04	0.05	-0.09	81st Wettest	Wettest since: 2007	2019
Nov 2005–Oct 2008 36-Month	0.26	0.05	0.21	87th Driest	Driest since: 2007	1932
	0.26	0.05	0.21	41st Wettest	Wettest since: 2006	2019
	Ties: 1997
Nov 2004–Oct 2008 48-Month	0.19	0.05	0.14	75th Driest	Driest since: 2003	1966
	0.19	0.05	0.14	52nd Wettest	Wettest since: 2007	2006
	Ties: 1972
Nov 2003–Oct 2008 60-Month	0.44	0.05	0.39	107th Driest	Driest since: 2005	1966
Nov 2003–Oct 2008 60-Month	0.44	0.05	0.39	19th Wettest	Wettest since: 2007	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 2008 Palmer Z-Index Rankings

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