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 6

December 1923 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1923 1-Month	0.59	-0.08	0.67	83rd Driest	Driest since: 1922	1930
December 1923 1-Month	0.59	-0.08	0.67	48th Wettest	Wettest since: 1920	1901
Nov–Dec 1923 2-Month	-0.56	-0.15	-0.41	45th Driest	Driest since: 1922	1930
Nov–Dec 1923 2-Month	-0.56	-0.15	-0.41	86th Wettest	Wettest since: 1921	1972
Oct–Dec 1923 3-Month	-0.45	-0.09	-0.36	40th Driest	Driest since: 1922	1930
Oct–Dec 1923 3-Month	-0.45	-0.09	-0.36	91st Wettest	Wettest since: 1921	1996
Sep–Dec 1923 4-Month	-0.46	-0.04	-0.42	36th Driest	Driest since: 1922	1964
Sep–Dec 1923 4-Month	-0.46	-0.04	-0.42	95th Wettest	Wettest since: 1921	2011
Aug–Dec 1923 5-Month	-0.64	-0.01	-0.63	29th Driest	Driest since: 1922	1964
Aug–Dec 1923 5-Month	-0.64	-0.01	-0.63	102nd Wettest	Wettest since: 1921	2018
Jul–Dec 1923 6-Month	-0.71	0.01	-0.72	29th Driest	Driest since: 1922	1964
Jul–Dec 1923 6-Month	-0.71	0.01	-0.72	102nd Wettest	Wettest since: 1921	2018
Jun–Dec 1923 7-Month	-0.80	0.03	-0.83	25th Driest	Driest since: 1913	1964
Jun–Dec 1923 7-Month	-0.80	0.03	-0.83	106th Wettest	Wettest since: 1922	2018
May–Dec 1923 8-Month	-0.75	0.01	-0.76	27th Driest	Driest since: 1913	1964
May–Dec 1923 8-Month	-0.75	0.01	-0.76	104th Wettest	Wettest since: 1922	2018
Apr–Dec 1923 9-Month	-0.83	0.03	-0.86	19th Driest	Driest since: 1910	1964
Apr–Dec 1923 9-Month	-0.83	0.03	-0.86	112th Wettest	Wettest since: 1922	2018
Mar–Dec 1923 10-Month	-0.96	0.02	-0.98	16th Driest	Driest since: 1910	1964
Mar–Dec 1923 10-Month	-0.96	0.02	-0.98	115th Wettest	Wettest since: 1922	2011
Feb–Dec 1923 11-Month	-1.00	0.01	-1.01	9th Driest	Driest since: 1908	1964
Feb–Dec 1923 11-Month	-1.00	0.01	-1.01	122nd Wettest	Wettest since: 1922	2011
Jan–Dec 1923 12-Month	-0.79	0.03	-0.82	15th Driest	Driest since: 1909	1991
Jan–Dec 1923 12-Month	-0.79	0.03	-0.82	116th Wettest	Wettest since: 1922	2011, 2018
Jul 1922–Dec 1923 18-Month	-0.99	0.02	-1.01	6th Driest	Driest since: 1910	1965
Jul 1922–Dec 1923 18-Month	-0.99	0.02	-1.01	124th Wettest	Wettest since: 1922	2019
Jan 1922–Dec 1923 24-Month	-0.66	0.03	-0.69	8th Driest	Driest since: 1910	1964
Jan 1922–Dec 1923 24-Month	-0.66	0.03	-0.69	122nd Wettest	Wettest since: 1922	2019
Jan 1921–Dec 1923 36-Month	-0.62	0.03	-0.65	8th Driest	Driest since: 1911	1965
Jan 1921–Dec 1923 36-Month	-0.62	0.03	-0.65	121st Wettest	Wettest since: 1922	2019
Jan 1920–Dec 1923 48-Month	-0.41	0.03	-0.44	11th Driest	Driest since: 1911	1966
Jan 1920–Dec 1923 48-Month	-0.41	0.03	-0.44	117th Wettest	Wettest since: 1922	2006
Jan 1919–Dec 1923 60-Month	-0.31	0.03	-0.34	16th Driest	Driest since: 1913	1966
Jan 1919–Dec 1923 60-Month	-0.31	0.03	-0.34	111th Wettest	Wettest since: 1922	2021

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 6

December 1923 Palmer Z-Index Rankings

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