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 1

December 1969 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1969 1-Month	2.90	0.04	2.86	121st Driest	Driest since: 1968	1998
December 1969 1-Month	2.90	0.04	2.86	10th Wettest	Wettest since: 1957	1973
Nov–Dec 1969 2-Month	2.01	-0.11	2.12	124th Driest	Driest since: 1968	1931
Nov–Dec 1969 2-Month	2.01	-0.11	2.12	7th Wettest	Wettest since: 1951	1972
Oct–Dec 1969 3-Month	0.87	-0.05	0.92	102nd Driest	Driest since: 1968	1931
Oct–Dec 1969 3-Month	0.87	-0.05	0.92	29th Wettest	Wettest since: 1959	1927
Sep–Dec 1969 4-Month	0.35	-0.02	0.37	79th Driest	Driest since: 1968	1931
	0.35	-0.02	0.37	52nd Wettest	Wettest since: 1959	2018
	Ties: 1919
Aug–Dec 1969 5-Month	0.28	-0.02	0.30	73rd Driest	Driest since: 1968	1964
Aug–Dec 1969 5-Month	0.28	-0.02	0.30	58th Wettest	Wettest since: 1967	2011
Jul–Dec 1969 6-Month	0.84	-0.03	0.87	106th Driest	Driest since: 1968	1964
Jul–Dec 1969 6-Month	0.84	-0.03	0.87	25th Wettest	Wettest since: 1955	2018
Jun–Dec 1969 7-Month	0.92	-0.01	0.93	105th Driest	Driest since: 1968	1964
Jun–Dec 1969 7-Month	0.92	-0.01	0.93	26th Wettest	Wettest since: 1955	2011
May–Dec 1969 8-Month	0.60	-0.04	0.64	100th Driest	Driest since: 1968	1964
May–Dec 1969 8-Month	0.60	-0.04	0.64	31st Wettest	Wettest since: 1955	2011
Apr–Dec 1969 9-Month	0.50	-0.04	0.54	95th Driest	Driest since: 1968	1964
	0.50	-0.04	0.54	36th Wettest	Wettest since: 1955	2011
	Ties: 1955
Mar–Dec 1969 10-Month	0.31	-0.03	0.34	84th Driest	Driest since: 1968	1964
Mar–Dec 1969 10-Month	0.31	-0.03	0.34	47th Wettest	Wettest since: 1967	2011
Feb–Dec 1969 11-Month	0.12	-0.02	0.14	72nd Driest	Driest since: 1968	1964
	0.12	-0.02	0.14	59th Wettest	Wettest since: 1967	2011
	Ties: 1935, 1948
Jan–Dec 1969 12-Month	-0.04	-0.01	-0.03	62nd Driest	Driest since: 1968	1964
Jan–Dec 1969 12-Month	-0.04	-0.01	-0.03	69th Wettest	Wettest since: 1967	2011
Jul 1968–Dec 1969 18-Month	-0.30	-0.02	-0.28	35th Driest	Driest since: 1966	1965
Jul 1968–Dec 1969 18-Month	-0.30	-0.02	-0.28	95th Wettest	Wettest since: 1968	2011
Jan 1968–Dec 1969 24-Month	-0.28	-0.02	-0.26	33rd Driest	Driest since: 1967	1964, 1965
	-0.28	-0.02	-0.26	97th Wettest	Wettest since: 1968	2019
	Ties: 1941
Jan 1967–Dec 1969 36-Month	-0.18	-0.02	-0.16	31st Driest	Driest since: 1968	1965
Jan 1967–Dec 1969 36-Month	-0.18	-0.02	-0.16	98th Wettest	Wettest since: 1962	2019
Jan 1966–Dec 1969 48-Month	-0.34	-0.01	-0.33	19th Driest	Driest since: 1968	1966
Jan 1966–Dec 1969 48-Month	-0.34	-0.01	-0.33	109th Wettest	Wettest since: 1962	2021
Jan 1965–Dec 1969 60-Month	-0.49	-0.01	-0.48	6th Driest	Driest since: 1968	1966
Jan 1965–Dec 1969 60-Month	-0.49	-0.01	-0.48	121st Wettest	Wettest since: 1963	1976, 2022

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 31, 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 1

December 1969 Palmer Z-Index Rankings

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