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 2

November 1901 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
November 1901 1-Month	-1.53	-0.28	-1.25	40th Driest	Driest since: 1900	1931
November 1901 1-Month	-1.53	-0.28	-1.25	91st Wettest	Wettest since: 1899	2018
Oct–Nov 1901 2-Month	-1.27	-0.07	-1.20	29th Driest	Driest since: 1900	2024
	-1.27	-0.07	-1.20	102nd Wettest	Wettest since: 1899	1932
	Ties: 1899
Sep–Nov 1901 3-Month	-0.82	-0.03	-0.79	34th Driest	Driest since: 1900	2024
Sep–Nov 1901 3-Month	-0.82	-0.03	-0.79	97th Wettest	Wettest since: 1899	2011
Aug–Nov 1901 4-Month	0.49	0.00	0.49	82nd Driest	Driest since: 1900	1930
Aug–Nov 1901 4-Month	0.49	0.00	0.49	49th Wettest	Wettest since: 1898	2011
Jul–Nov 1901 5-Month	0.17	-0.01	0.18	68th Driest	Driest since: 1900	1964
Jul–Nov 1901 5-Month	0.17	-0.01	0.18	63rd Wettest	Wettest since: 1898	2018
Jun–Nov 1901 6-Month	-0.05	0.01	-0.06	57th Driest	Driest since: 1900	1930
Jun–Nov 1901 6-Month	-0.05	0.01	-0.06	74th Wettest	Wettest since: 1897	2018
May–Nov 1901 7-Month	0.13	-0.04	0.17	69th Driest	Driest since: 1900	1964
May–Nov 1901 7-Month	0.13	-0.04	0.17	62nd Wettest	Wettest since: 1897	2018
Apr–Nov 1901 8-Month	0.27	-0.02	0.29	78th Driest	Driest since: 1900	1930
Apr–Nov 1901 8-Month	0.27	-0.02	0.29	53rd Wettest	Wettest since: 1897	2018
Mar–Nov 1901 9-Month	0.43	-0.01	0.44	96th Driest	Driest since: 1900	1930
Mar–Nov 1901 9-Month	0.43	-0.01	0.44	35th Wettest	Wettest to Date	2011
Feb–Nov 1901 10-Month	0.14	0.01	0.13	78th Driest	Driest since: 1900	1941
Feb–Nov 1901 10-Month	0.14	0.01	0.13	53rd Wettest	Wettest since: 1897	2018
Jan–Nov 1901 11-Month	0.08	0.03	0.05	66th Driest	Driest since: 1900	1930
Jan–Nov 1901 11-Month	0.08	0.03	0.05	65th Wettest	Wettest since: 1899	2018
Dec 1900–Nov 1901 12-Month	-0.03	0.03	-0.06	56th Driest	Driest since: 1900	1930
Dec 1900–Nov 1901 12-Month	-0.03	0.03	-0.06	74th Wettest	Wettest since: 1899	2018
Jun 1900–Nov 1901 18-Month	-0.47	0.02	-0.49	23rd Driest	Driest since: 1900	1965
Jun 1900–Nov 1901 18-Month	-0.47	0.02	-0.49	107th Wettest	Wettest since: 1899	2019
Dec 1899–Nov 1901 24-Month	-0.38	0.03	-0.41	20th Driest	Driest to Date	1931
Dec 1899–Nov 1901 24-Month	-0.38	0.03	-0.41	109th Wettest	Wettest since: 1900	2019
Dec 1898–Nov 1901 36-Month	-0.20	0.03	-0.23	26th Driest	Driest to Date	1965
Dec 1898–Nov 1901 36-Month	-0.20	0.03	-0.23	102nd Wettest	Wettest since: 1900	2019
Dec 1897–Nov 1901 48-Month	-0.09	0.03	-0.12	39th Driest	Driest to Date	1966
Dec 1897–Nov 1901 48-Month	-0.09	0.03	-0.12	88th Wettest	Wettest since: 1900	2021
Dec 1896–Nov 1901 60-Month	-0.06	0.03	-0.09	38th Driest	Driest to Date	1966
Dec 1896–Nov 1901 60-Month	-0.06	0.03	-0.09	88th Wettest	Wettest since: 1900	1979

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 31, 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 2

November 1901 Palmer Z-Index Rankings

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