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 3

October 1910 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
October 1910 1-Month	-1.39	0.11	-1.50	31st Driest	Driest since: 1909	2024
October 1910 1-Month	-1.39	0.11	-1.50	100th Wettest	Wettest since: 1908	2005
Sep–Oct 1910 2-Month	-1.06	0.10	-1.16	35th Driest	Driest since: 1909	2024
Sep–Oct 1910 2-Month	-1.06	0.10	-1.16	96th Wettest	Wettest since: 1907	2011
Aug–Oct 1910 3-Month	-0.70	0.10	-0.80	42nd Driest	Driest since: 1909	1930
Aug–Oct 1910 3-Month	-0.70	0.10	-0.80	89th Wettest	Wettest since: 1907	2011
Jul–Oct 1910 4-Month	-1.03	0.07	-1.10	25th Driest	Driest since: 1909	1930
Jul–Oct 1910 4-Month	-1.03	0.07	-1.10	106th Wettest	Wettest since: 1908	2011
Jun–Oct 1910 5-Month	-0.33	0.07	-0.40	49th Driest	Driest since: 1909	2024
Jun–Oct 1910 5-Month	-0.33	0.07	-0.40	82nd Wettest	Wettest since: 1907	2018
May–Oct 1910 6-Month	-0.46	0.00	-0.46	40th Driest	Driest since: 1909	1964
May–Oct 1910 6-Month	-0.46	0.00	-0.46	91st Wettest	Wettest since: 1908	2018
Apr–Oct 1910 7-Month	-0.15	0.01	-0.16	54th Driest	Driest since: 1909	1963
Apr–Oct 1910 7-Month	-0.15	0.01	-0.16	77th Wettest	Wettest since: 1907	2018
Mar–Oct 1910 8-Month	-0.61	0.01	-0.62	27th Driest	Driest since: 1909	1930
Mar–Oct 1910 8-Month	-0.61	0.01	-0.62	104th Wettest	Wettest since: 1908	2011
Feb–Oct 1910 9-Month	-0.33	0.03	-0.36	40th Driest	Driest since: 1909	1963
Feb–Oct 1910 9-Month	-0.33	0.03	-0.36	91st Wettest	Wettest since: 1908	2018
Jan–Oct 1910 10-Month	-0.13	0.04	-0.17	49th Driest	Driest since: 1909	1963
Jan–Oct 1910 10-Month	-0.13	0.04	-0.17	82nd Wettest	Wettest since: 1908	2018
Dec 1909–Oct 1910 11-Month	-0.13	0.04	-0.17	50th Driest	Driest since: 1909	1963
	-0.13	0.04	-0.17	80th Wettest	Wettest since: 1908	1975
	Ties: 1897
Nov 1909–Oct 1910 12-Month	-0.35	0.01	-0.36	40th Driest	Driest since: 1909	2002
Nov 1909–Oct 1910 12-Month	-0.35	0.01	-0.36	90th Wettest	Wettest since: 1908	2003
May 1909–Oct 1910 18-Month	-0.77	0.01	-0.78	14th Driest	Driest since: 1896	1965
May 1909–Oct 1910 18-Month	-0.77	0.01	-0.78	116th Wettest	Wettest since: 1909	2019
Nov 1908–Oct 1910 24-Month	-0.58	0.01	-0.59	14th Driest	Driest to Date	1966
Nov 1908–Oct 1910 24-Month	-0.58	0.01	-0.59	115th Wettest	Wettest since: 1909	2019
Nov 1907–Oct 1910 36-Month	-0.23	0.01	-0.24	33rd Driest	Driest to Date	1965
Nov 1907–Oct 1910 36-Month	-0.23	0.01	-0.24	95th Wettest	Wettest since: 1909	1904
Nov 1906–Oct 1910 48-Month	-0.01	0.02	-0.03	55th Driest	Driest to Date	1966
Nov 1906–Oct 1910 48-Month	-0.01	0.02	-0.03	72nd Wettest	Wettest since: 1909	2021
Nov 1905–Oct 1910 60-Month	0.17	0.02	0.15	85th Driest	Driest since: 1901	1966
Nov 1905–Oct 1910 60-Month	0.17	0.02	0.15	41st Wettest	Wettest since: 1909	1906

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 3

October 1910 Palmer Z-Index Rankings

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