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 4

January 1929 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
January 1929 1-Month	0.63	0.23	0.40	92nd Driest	Driest since: 1928	1981
	0.63	0.23	0.40	40th Wettest	Wettest since: 1925	1979
	Ties: 1904
Dec 1928–Jan 1929 2-Month	-0.66	0.12	-0.78	39th Driest	Driest since: 1927	2002
Dec 1928–Jan 1929 2-Month	-0.66	0.12	-0.78	92nd Wettest	Wettest since: 1928	1978
Nov 1928–Jan 1929 3-Month	-0.84	0.01	-0.85	32nd Driest	Driest since: 1923	2002
Nov 1928–Jan 1929 3-Month	-0.84	0.01	-0.85	99th Wettest	Wettest since: 1928	2019
Oct 1928–Jan 1929 4-Month	-1.04	0.00	-1.04	24th Driest	Driest since: 1923	2002
Oct 1928–Jan 1929 4-Month	-1.04	0.00	-1.04	107th Wettest	Wettest since: 1928	2019
Sep 1928–Jan 1929 5-Month	-0.52	0.03	-0.55	34th Driest	Driest since: 1923	1931
	-0.52	0.03	-0.55	97th Wettest	Wettest since: 1928	2019
	Ties: 1919
Aug 1928–Jan 1929 6-Month	-0.09	0.06	-0.15	54th Driest	Driest since: 1925	1931
Aug 1928–Jan 1929 6-Month	-0.09	0.06	-0.15	77th Wettest	Wettest since: 1928	2019
Jul 1928–Jan 1929 7-Month	0.20	0.08	0.12	68th Driest	Driest since: 1925	1931
Jul 1928–Jan 1929 7-Month	0.20	0.08	0.12	63rd Wettest	Wettest since: 1928	2019
Jun 1928–Jan 1929 8-Month	0.99	0.09	0.90	110th Driest	Driest since: 1927	1931
	0.99	0.09	0.90	21st Wettest	Wettest since: 1928	2019
	Ties: 1907, 1916
May 1928–Jan 1929 9-Month	0.75	0.05	0.70	105th Driest	Driest since: 1927	1931
May 1928–Jan 1929 9-Month	0.75	0.05	0.70	26th Wettest	Wettest since: 1928	2019
Apr 1928–Jan 1929 10-Month	1.05	0.04	1.01	119th Driest	Driest since: 1928	1931
Apr 1928–Jan 1929 10-Month	1.05	0.04	1.01	12th Wettest	Wettest since: 1908	2019
Mar 1928–Jan 1929 11-Month	0.92	0.04	0.88	115th Driest	Driest since: 1928	1931
Mar 1928–Jan 1929 11-Month	0.92	0.04	0.88	16th Wettest	Wettest since: 1908	2019
Feb 1928–Jan 1929 12-Month	0.90	0.05	0.85	117th Driest	Driest since: 1928	1931
Feb 1928–Jan 1929 12-Month	0.90	0.05	0.85	14th Wettest	Wettest to Date	2019
Aug 1927–Jan 1929 18-Month	0.93	0.05	0.88	121st Driest	Driest since: 1928	1932
Aug 1927–Jan 1929 18-Month	0.93	0.05	0.88	9th Wettest	Wettest since: 1913	2019
Feb 1927–Jan 1929 24-Month	0.83	0.05	0.78	124th Driest	Driest since: 1928	1932
Feb 1927–Jan 1929 24-Month	0.83	0.05	0.78	6th Wettest	Wettest to Date	2020
Feb 1926–Jan 1929 36-Month	0.56	0.05	0.51	108th Driest	Driest since: 1928	1967
Feb 1926–Jan 1929 36-Month	0.56	0.05	0.51	21st Wettest	Wettest since: 1918	2020
Feb 1925–Jan 1929 48-Month	0.30	0.06	0.24	92nd Driest	Driest since: 1928	1967
Feb 1925–Jan 1929 48-Month	0.30	0.06	0.24	36th Wettest	Wettest since: 1920	1997
Feb 1924–Jan 1929 60-Month	0.40	0.05	0.35	106th Driest	Driest since: 1928	1967
Feb 1924–Jan 1929 60-Month	0.40	0.05	0.35	21st Wettest	Wettest since: 1909	1997

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 4

January 1929 Palmer Z-Index Rankings

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