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

November 2001 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
November 2001 1-Month	-2.87	-0.27	-2.60	10th Driest	Driest since: 1998	1930
	-2.87	-0.27	-2.60	121st Wettest	Wettest since: 2000	2018
	Ties: 1914, 1949
Oct–Nov 2001 2-Month	-2.35	-0.12	-2.23	10th Driest	Driest since: 1964	1930
Oct–Nov 2001 2-Month	-2.35	-0.12	-2.23	121st Wettest	Wettest since: 2000	1995
Sep–Nov 2001 3-Month	-1.23	-0.03	-1.20	24th Driest	Driest since: 1998	1930
Sep–Nov 2001 3-Month	-1.23	-0.03	-1.20	107th Wettest	Wettest since: 2000	2011
Aug–Nov 2001 4-Month	-1.29	0.01	-1.30	20th Driest	Driest since: 1998	1930
	-1.29	0.01	-1.30	111th Wettest	Wettest since: 2000	2011
	Ties: 1961
Jul–Nov 2001 5-Month	-1.33	0.01	-1.34	17th Driest	Driest since: 1998	1930
Jul–Nov 2001 5-Month	-1.33	0.01	-1.34	114th Wettest	Wettest since: 2000	2018
Jun–Nov 2001 6-Month	-1.01	0.04	-1.05	22nd Driest	Driest since: 1998	1930
Jun–Nov 2001 6-Month	-1.01	0.04	-1.05	109th Wettest	Wettest since: 2000	2018
May–Nov 2001 7-Month	-1.13	0.00	-1.13	19th Driest	Driest since: 1991	1930
	-1.13	0.00	-1.13	112th Wettest	Wettest since: 2000	2018
	Ties: 1949
Apr–Nov 2001 8-Month	-1.20	0.03	-1.23	12th Driest	Driest since: 1991	1930
Apr–Nov 2001 8-Month	-1.20	0.03	-1.23	119th Wettest	Wettest since: 2000	2018
Mar–Nov 2001 9-Month	-0.87	0.03	-0.90	19th Driest	Driest since: 1991	1930
Mar–Nov 2001 9-Month	-0.87	0.03	-0.90	112th Wettest	Wettest since: 2000	2011
Feb–Nov 2001 10-Month	-0.96	0.03	-0.99	15th Driest	Driest since: 1991	1930
	-0.96	0.03	-0.99	116th Wettest	Wettest since: 2000	2011
	Ties: 1980
Jan–Nov 2001 11-Month	-1.00	0.06	-1.06	13th Driest	Driest since: 1991	1930
Jan–Nov 2001 11-Month	-1.00	0.06	-1.06	118th Wettest	Wettest since: 2000	2011
Dec 2000–Nov 2001 12-Month	-0.91	0.06	-0.97	12th Driest	Driest since: 1991	1930
Dec 2000–Nov 2001 12-Month	-0.91	0.06	-0.97	118th Wettest	Wettest since: 2000	2011
Jun 2000–Nov 2001 18-Month	-0.68	0.05	-0.73	16th Driest	Driest since: 1999	1931
Jun 2000–Nov 2001 18-Month	-0.68	0.05	-0.73	114th Wettest	Wettest since: 2000	2019
Dec 1999–Nov 2001 24-Month	-0.50	0.05	-0.55	16th Driest	Driest since: 1992	1931
	-0.50	0.05	-0.55	113th Wettest	Wettest since: 2000	2019
	Ties: 1991
Dec 1998–Nov 2001 36-Month	-0.46	0.05	-0.51	11th Driest	Driest since: 1982	1932
Dec 1998–Nov 2001 36-Month	-0.46	0.05	-0.51	117th Wettest	Wettest since: 2000	2019
Dec 1997–Nov 2001 48-Month	-0.30	0.05	-0.35	17th Driest	Driest since: 1991	1966
Dec 1997–Nov 2001 48-Month	-0.30	0.05	-0.35	110th Wettest	Wettest since: 2000	2006
Dec 1996–Nov 2001 60-Month	-0.24	0.05	-0.29	19th Driest	Driest since: 1992	1966
	-0.24	0.05	-0.29	107th Wettest	Wettest since: 2000	1976
	Ties: 1957

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 5

November 2001 Palmer Z-Index Rankings

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