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

November 1997 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
November 1997 1-Month	-0.02	-0.28	0.26	81st Driest	Driest since: 1991	1931
November 1997 1-Month	-0.02	-0.28	0.26	50th Wettest	Wettest since: 1996	2018
Oct–Nov 1997 2-Month	-0.66	-0.07	-0.59	46th Driest	Driest since: 1991	2024
Oct–Nov 1997 2-Month	-0.66	-0.07	-0.59	85th Wettest	Wettest since: 1996	1932
Sep–Nov 1997 3-Month	-0.48	-0.03	-0.45	41st Driest	Driest since: 1991	2024
Sep–Nov 1997 3-Month	-0.48	-0.03	-0.45	90th Wettest	Wettest since: 1996	2011
Aug–Nov 1997 4-Month	-0.08	0.00	-0.08	56th Driest	Driest since: 1991	1930
Aug–Nov 1997 4-Month	-0.08	0.00	-0.08	75th Wettest	Wettest since: 1996	2011
Jul–Nov 1997 5-Month	0.05	-0.01	0.06	64th Driest	Driest since: 1995	1964
Jul–Nov 1997 5-Month	0.05	-0.01	0.06	67th Wettest	Wettest since: 1996	2018
Jun–Nov 1997 6-Month	-0.20	0.01	-0.21	49th Driest	Driest since: 1995	1930
Jun–Nov 1997 6-Month	-0.20	0.01	-0.21	82nd Wettest	Wettest since: 1996	2018
May–Nov 1997 7-Month	-0.29	-0.04	-0.25	43rd Driest	Driest since: 1995	1964
May–Nov 1997 7-Month	-0.29	-0.04	-0.25	88th Wettest	Wettest since: 1996	2018
Apr–Nov 1997 8-Month	-0.44	-0.02	-0.42	34th Driest	Driest since: 1995	1930
Apr–Nov 1997 8-Month	-0.44	-0.02	-0.42	97th Wettest	Wettest since: 1996	2018
Mar–Nov 1997 9-Month	-0.36	-0.01	-0.35	35th Driest	Driest since: 1995	1930
Mar–Nov 1997 9-Month	-0.36	-0.01	-0.35	96th Wettest	Wettest since: 1996	2011
Feb–Nov 1997 10-Month	-0.49	0.01	-0.50	29th Driest	Driest since: 1995	1941
Feb–Nov 1997 10-Month	-0.49	0.01	-0.50	102nd Wettest	Wettest since: 1996	2018
Jan–Nov 1997 11-Month	-0.46	0.03	-0.49	26th Driest	Driest since: 1995	1930
Jan–Nov 1997 11-Month	-0.46	0.03	-0.49	105th Wettest	Wettest since: 1996	2018
Dec 1996–Nov 1997 12-Month	-0.01	0.03	-0.04	57th Driest	Driest since: 1995	1930
Dec 1996–Nov 1997 12-Month	-0.01	0.03	-0.04	73rd Wettest	Wettest since: 1996	2018
Jun 1996–Nov 1997 18-Month	0.48	0.02	0.46	98th Driest	Driest since: 1995	1965
	0.48	0.02	0.46	32nd Wettest	Wettest since: 1996	2019
	Ties: 1933
Dec 1995–Nov 1997 24-Month	0.61	0.03	0.58	115th Driest	Driest since: 1996	1931
Dec 1995–Nov 1997 24-Month	0.61	0.03	0.58	14th Wettest	Wettest since: 1979	2019
Dec 1994–Nov 1997 36-Month	0.22	0.03	0.19	84th Driest	Driest since: 1995	1965
Dec 1994–Nov 1997 36-Month	0.22	0.03	0.19	44th Wettest	Wettest since: 1996	2019
Dec 1993–Nov 1997 48-Month	0.36	0.03	0.33	101st Driest	Driest since: 1995	1966
Dec 1993–Nov 1997 48-Month	0.36	0.03	0.33	26th Wettest	Wettest since: 1996	2021
Dec 1992–Nov 1997 60-Month	0.36	0.03	0.33	101st Driest	Driest since: 1995	1966
	0.36	0.03	0.33	25th Wettest	Wettest since: 1996	1979
	Ties: 1903

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on April 1, 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

November 1997 Palmer Z-Index Rankings

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