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

December 1945 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1945 1-Month	0.37	0.09	0.28	79th Driest	Driest since: 1944	1955
December 1945 1-Month	0.37	0.09	0.28	52nd Wettest	Wettest since: 1942	1996
Nov–Dec 1945 2-Month	1.08	-0.09	1.17	106th Driest	Driest since: 1944	1931
Nov–Dec 1945 2-Month	1.08	-0.09	1.17	25th Wettest	Wettest since: 1927	1972
Oct–Dec 1945 3-Month	0.57	-0.02	0.59	86th Driest	Driest since: 1944	1930
Oct–Dec 1945 3-Month	0.57	-0.02	0.59	45th Wettest	Wettest since: 1943	1996
Sep–Dec 1945 4-Month	0.91	0.00	0.91	102nd Driest	Driest since: 1944	2024
Sep–Dec 1945 4-Month	0.91	0.00	0.91	29th Wettest	Wettest since: 1942	2018
Aug–Dec 1945 5-Month	0.86	0.02	0.84	103rd Driest	Driest since: 1944	1930
Aug–Dec 1945 5-Month	0.86	0.02	0.84	28th Wettest	Wettest since: 1942	2011
Jul–Dec 1945 6-Month	1.60	0.01	1.59	123rd Driest	Driest since: 1944	1930
Jul–Dec 1945 6-Month	1.60	0.01	1.59	8th Wettest	Wettest since: 1942	2018
Jun–Dec 1945 7-Month	1.47	0.02	1.45	120th Driest	Driest since: 1944	1930
Jun–Dec 1945 7-Month	1.47	0.02	1.45	11th Wettest	Wettest since: 1942	2018
May–Dec 1945 8-Month	1.46	-0.02	1.48	123rd Driest	Driest since: 1944	1964
May–Dec 1945 8-Month	1.46	-0.02	1.48	8th Wettest	Wettest since: 1942	2018
Apr–Dec 1945 9-Month	1.32	-0.01	1.33	123rd Driest	Driest since: 1944	1930
Apr–Dec 1945 9-Month	1.32	-0.01	1.33	8th Wettest	Wettest to Date	2018
Mar–Dec 1945 10-Month	0.96	0.00	0.96	117th Driest	Driest since: 1944	1930
Mar–Dec 1945 10-Month	0.96	0.00	0.96	14th Wettest	Wettest since: 1942	2011
Feb–Dec 1945 11-Month	0.82	0.02	0.80	114th Driest	Driest since: 1944	1930
Feb–Dec 1945 11-Month	0.82	0.02	0.80	17th Wettest	Wettest since: 1942	2018
Jan–Dec 1945 12-Month	0.76	0.03	0.73	114th Driest	Driest since: 1944	1930
Jan–Dec 1945 12-Month	0.76	0.03	0.73	17th Wettest	Wettest since: 1942	2018
Jul 1944–Dec 1945 18-Month	0.13	0.02	0.11	65th Driest	Driest since: 1944	1965
Jul 1944–Dec 1945 18-Month	0.13	0.02	0.11	65th Wettest	Wettest since: 1943	2019
Jan 1944–Dec 1945 24-Month	0.07	0.03	0.04	68th Driest	Driest since: 1944	1931
Jan 1944–Dec 1945 24-Month	0.07	0.03	0.04	62nd Wettest	Wettest since: 1943	2019
Jan 1943–Dec 1945 36-Month	-0.08	0.03	-0.11	45th Driest	Driest since: 1943	1965
Jan 1943–Dec 1945 36-Month	-0.08	0.03	-0.11	84th Wettest	Wettest since: 1944	2020
Jan 1942–Dec 1945 48-Month	0.18	0.03	0.15	81st Driest	Driest since: 1944	1966
Jan 1942–Dec 1945 48-Month	0.18	0.03	0.15	47th Wettest	Wettest since: 1938	2021
Jan 1941–Dec 1945 60-Month	-0.13	0.03	-0.16	28th Driest	Driest since: 1944	1966
Jan 1941–Dec 1945 60-Month	-0.13	0.03	-0.16	99th Wettest	Wettest since: 1942	1976, 1979, 2021

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 24, 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

December 1945 Palmer Z-Index Rankings

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