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

January 1905 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
January 1905 1-Month	2.33	0.21	2.12	118th Driest	Driest since: 1904	1970
January 1905 1-Month	2.33	0.21	2.12	14th Wettest	Wettest to Date	1979
Dec 1904–Jan 1905 2-Month	1.03	0.14	0.89	102nd Driest	Driest since: 1904	1981
Dec 1904–Jan 1905 2-Month	1.03	0.14	0.89	29th Wettest	Wettest since: 1903	1978
Nov 1904–Jan 1905 3-Month	0.15	0.00	0.15	74th Driest	Driest since: 1904	1981
Nov 1904–Jan 1905 3-Month	0.15	0.00	0.15	57th Wettest	Wettest since: 1903	1978
Oct 1904–Jan 1905 4-Month	0.39	0.03	0.36	79th Driest	Driest since: 1901	2025
Oct 1904–Jan 1905 4-Month	0.39	0.03	0.36	52nd Wettest	Wettest since: 1904	1978
Sep 1904–Jan 1905 5-Month	0.59	0.03	0.56	95th Driest	Driest since: 1904	2025
Sep 1904–Jan 1905 5-Month	0.59	0.03	0.56	36th Wettest	Wettest since: 1903	1978
Aug 1904–Jan 1905 6-Month	1.17	0.04	1.13	114th Driest	Driest since: 1904	1931
Aug 1904–Jan 1905 6-Month	1.17	0.04	1.13	17th Wettest	Wettest since: 1903	2019
Jul 1904–Jan 1905 7-Month	1.14	0.02	1.12	118th Driest	Driest since: 1904	1931
Jul 1904–Jan 1905 7-Month	1.14	0.02	1.12	13th Wettest	Wettest to Date	2019
Jun 1904–Jan 1905 8-Month	1.06	0.03	1.03	110th Driest	Driest since: 1902	1931
Jun 1904–Jan 1905 8-Month	1.06	0.03	1.03	21st Wettest	Wettest since: 1904	2019
May 1904–Jan 1905 9-Month	0.87	-0.01	0.88	110th Driest	Driest since: 1904	1981
May 1904–Jan 1905 9-Month	0.87	-0.01	0.88	21st Wettest	Wettest since: 1903	2019
Apr 1904–Jan 1905 10-Month	0.73	0.00	0.73	107th Driest	Driest since: 1902	1931
Apr 1904–Jan 1905 10-Month	0.73	0.00	0.73	24th Wettest	Wettest since: 1904	2019
Mar 1904–Jan 1905 11-Month	0.72	0.01	0.71	109th Driest	Driest since: 1901	1931
Mar 1904–Jan 1905 11-Month	0.72	0.01	0.71	22nd Wettest	Wettest since: 1904	2019
Feb 1904–Jan 1905 12-Month	0.61	0.02	0.59	106th Driest	Driest since: 1902	1931
Feb 1904–Jan 1905 12-Month	0.61	0.02	0.59	25th Wettest	Wettest since: 1904	2019
Aug 1903–Jan 1905 18-Month	0.67	0.03	0.64	110th Driest	Driest since: 1902	1966
Aug 1903–Jan 1905 18-Month	0.67	0.03	0.64	20th Wettest	Wettest since: 1904	2019
Feb 1903–Jan 1905 24-Month	0.81	0.03	0.78	119th Driest	Driest since: 1903	1966
Feb 1903–Jan 1905 24-Month	0.81	0.03	0.78	11th Wettest	Wettest since: 1904	2020
Feb 1902–Jan 1905 36-Month	0.90	0.03	0.87	125th Driest	Driest since: 1904	1967
Feb 1902–Jan 1905 36-Month	0.90	0.03	0.87	4th Wettest	Wettest to Date	2021
Feb 1901–Jan 1905 48-Month	0.80	0.03	0.77	124th Driest	Driest since: 1904	1967
Feb 1901–Jan 1905 48-Month	0.80	0.03	0.77	4th Wettest	Wettest to Date	1976, 2022
Feb 1900–Jan 1905 60-Month	0.49	0.03	0.46	113th Driest	Driest since: 1904	1967
Feb 1900–Jan 1905 60-Month	0.49	0.03	0.46	14th Wettest	Wettest to Date	1976

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 2

January 1905 Palmer Z-Index Rankings

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