Climate at a Glance | Divisional Rankings | National Centers for Environmental Information (NCEI)

Divisional Rankings

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Pennsylvania, Climate Division 4

January 1957 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
January 1957 1-Month	-0.71	0.23	-0.94	45th Driest	Driest since: 1956	1981
January 1957 1-Month	-0.71	0.23	-0.94	87th Wettest	Wettest since: 1953	1979
Dec 1956–Jan 1957 2-Month	0.21	0.12	0.09	73rd Driest	Driest since: 1956	2002
Dec 1956–Jan 1957 2-Month	0.21	0.12	0.09	58th Wettest	Wettest since: 1953	1978
Nov 1956–Jan 1957 3-Month	0.20	0.01	0.19	72nd Driest	Driest since: 1956	2002
	0.20	0.01	0.19	59th Wettest	Wettest since: 1953	2019
	Ties: 1907
Oct 1956–Jan 1957 4-Month	0.47	0.00	0.47	81st Driest	Driest since: 1956	2002
Oct 1956–Jan 1957 4-Month	0.47	0.00	0.47	50th Wettest	Wettest since: 1953	2019
Sep 1956–Jan 1957 5-Month	0.57	0.03	0.54	89th Driest	Driest since: 1956	1931
	0.57	0.03	0.54	42nd Wettest	Wettest since: 1953	2019
	Ties: 1912
Aug 1956–Jan 1957 6-Month	0.61	0.06	0.55	95th Driest	Driest since: 1956	1931
Aug 1956–Jan 1957 6-Month	0.61	0.06	0.55	36th Wettest	Wettest since: 1953	2019
Jul 1956–Jan 1957 7-Month	0.94	0.08	0.86	105th Driest	Driest since: 1956	1931
Jul 1956–Jan 1957 7-Month	0.94	0.08	0.86	26th Wettest	Wettest since: 1946	2019
Jun 1956–Jan 1957 8-Month	0.76	0.09	0.67	99th Driest	Driest since: 1956	1931
Jun 1956–Jan 1957 8-Month	0.76	0.09	0.67	32nd Wettest	Wettest since: 1949	2019
May 1956–Jan 1957 9-Month	0.57	0.05	0.52	91st Driest	Driest since: 1956	1931
	0.57	0.05	0.52	40th Wettest	Wettest since: 1953	2019
	Ties: 1913
Apr 1956–Jan 1957 10-Month	0.47	0.04	0.43	92nd Driest	Driest since: 1956	1931
Apr 1956–Jan 1957 10-Month	0.47	0.04	0.43	39th Wettest	Wettest since: 1953	2019
Mar 1956–Jan 1957 11-Month	0.53	0.04	0.49	98th Driest	Driest since: 1956	1931
Mar 1956–Jan 1957 11-Month	0.53	0.04	0.49	33rd Wettest	Wettest since: 1953	2019
Feb 1956–Jan 1957 12-Month	0.61	0.05	0.56	106th Driest	Driest since: 1956	1931
	0.61	0.05	0.56	25th Wettest	Wettest since: 1953	2019
	Ties: 1913, 1918, 1949, 1951
Aug 1955–Jan 1957 18-Month	0.60	0.05	0.55	104th Driest	Driest since: 1956	1932
Aug 1955–Jan 1957 18-Month	0.60	0.05	0.55	26th Wettest	Wettest since: 1953	2019
Feb 1955–Jan 1957 24-Month	0.31	0.05	0.26	85th Driest	Driest since: 1956	1932
Feb 1955–Jan 1957 24-Month	0.31	0.05	0.26	45th Wettest	Wettest since: 1953	2020
Feb 1954–Jan 1957 36-Month	-0.03	0.05	-0.08	52nd Driest	Driest since: 1956	1967
	-0.03	0.05	-0.08	77th Wettest	Wettest since: 1954	2020
	Ties: 1910
Feb 1953–Jan 1957 48-Month	-0.19	0.06	-0.25	30th Driest	Driest since: 1945	1967
Feb 1953–Jan 1957 48-Month	-0.19	0.06	-0.25	98th Wettest	Wettest since: 1956	1997
Feb 1952–Jan 1957 60-Month	0.05	0.05	0.00	63rd Driest	Driest since: 1956	1967
	0.05	0.05	0.00	64th Wettest	Wettest since: 1955	1997
	Ties: 1943

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 1957 Palmer Z-Index Rankings

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