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 1

October 1913 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
October 1913 1-Month	1.43	0.09	1.34	95th Driest	Driest since: 1912	1963
October 1913 1-Month	1.43	0.09	1.34	36th Wettest	Wettest since: 1911	2005
Sep–Oct 1913 2-Month	0.83	0.07	0.76	86th Driest	Driest since: 1910	1964
Sep–Oct 1913 2-Month	0.83	0.07	0.76	45th Wettest	Wettest since: 1912	2011
Aug–Oct 1913 3-Month	0.10	0.04	0.06	68th Driest	Driest since: 1910	1964
Aug–Oct 1913 3-Month	0.10	0.04	0.06	63rd Wettest	Wettest since: 1912	2011
Jul–Oct 1913 4-Month	-0.12	0.01	-0.13	59th Driest	Driest since: 1910	1964
Jul–Oct 1913 4-Month	-0.12	0.01	-0.13	72nd Wettest	Wettest since: 1912	2011
Jun–Oct 1913 5-Month	-0.55	0.03	-0.58	39th Driest	Driest since: 1910	1964
Jun–Oct 1913 5-Month	-0.55	0.03	-0.58	92nd Wettest	Wettest since: 1912	2011
May–Oct 1913 6-Month	-0.60	-0.02	-0.58	36th Driest	Driest since: 1910	1964
May–Oct 1913 6-Month	-0.60	-0.02	-0.58	95th Wettest	Wettest since: 1912	2011
Apr–Oct 1913 7-Month	-0.40	-0.02	-0.38	40th Driest	Driest since: 1910	1964
Apr–Oct 1913 7-Month	-0.40	-0.02	-0.38	91st Wettest	Wettest since: 1912	2011
Mar–Oct 1913 8-Month	-0.04	-0.01	-0.03	60th Driest	Driest since: 1910	1964
Mar–Oct 1913 8-Month	-0.04	-0.01	-0.03	71st Wettest	Wettest since: 1912	2011
Feb–Oct 1913 9-Month	-0.13	0.00	-0.13	53rd Driest	Driest since: 1910	1964
Feb–Oct 1913 9-Month	-0.13	0.00	-0.13	78th Wettest	Wettest since: 1912	2011
Jan–Oct 1913 10-Month	-0.06	0.01	-0.07	57th Driest	Driest since: 1912	1991
Jan–Oct 1913 10-Month	-0.06	0.01	-0.07	74th Wettest	Wettest since: 1911	2011
Dec 1912–Oct 1913 11-Month	0.00	0.01	-0.01	64th Driest	Driest since: 1912	1964, 1980
Dec 1912–Oct 1913 11-Month	0.00	0.01	-0.01	66th Wettest	Wettest since: 1907	2011
Nov 1912–Oct 1913 12-Month	-0.04	-0.01	-0.03	61st Driest	Driest since: 1912	1965
Nov 1912–Oct 1913 12-Month	-0.04	-0.01	-0.03	69th Wettest	Wettest since: 1907	2011
May 1912–Oct 1913 18-Month	-0.17	-0.02	-0.15	45th Driest	Driest since: 1911	1965
May 1912–Oct 1913 18-Month	-0.17	-0.02	-0.15	85th Wettest	Wettest since: 1912	2019
Nov 1911–Oct 1913 24-Month	-0.11	-0.02	-0.09	53rd Driest	Driest since: 1912	1965
Nov 1911–Oct 1913 24-Month	-0.11	-0.02	-0.09	76th Wettest	Wettest since: 1908	2019
Nov 1910–Oct 1913 36-Month	-0.12	-0.01	-0.11	43rd Driest	Driest since: 1912	1965
Nov 1910–Oct 1913 36-Month	-0.12	-0.01	-0.11	85th Wettest	Wettest since: 1908	1975
Nov 1909–Oct 1913 48-Month	-0.30	-0.01	-0.29	18th Driest	Driest since: 1912	1966
Nov 1909–Oct 1913 48-Month	-0.30	-0.01	-0.29	109th Wettest	Wettest since: 1909	1976
Nov 1908–Oct 1913 60-Month	-0.40	-0.01	-0.39	9th Driest	Driest since: 1912	1966
Nov 1908–Oct 1913 60-Month	-0.40	-0.01	-0.39	117th Wettest	Wettest since: 1911	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 1

October 1913 Palmer Z-Index Rankings

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