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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.

Kentucky, Climate Division 1

January 1990 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
January 1990 1-Month	0.33	0.12	0.21	81st Driest	Driest since: 1988	1931
January 1990 1-Month	0.33	0.12	0.21	51st Wettest	Wettest since: 1989	1937
Dec 1989–Jan 1990 2-Month	-0.34	0.03	-0.37	56th Driest	Driest since: 1987	1931
Dec 1989–Jan 1990 2-Month	-0.34	0.03	-0.37	75th Wettest	Wettest since: 1989	1937
Nov 1989–Jan 1990 3-Month	-0.23	-0.05	-0.18	61st Driest	Driest since: 1987	1931
Nov 1989–Jan 1990 3-Month	-0.23	-0.05	-0.18	70th Wettest	Wettest since: 1989	1916
Oct 1989–Jan 1990 4-Month	-0.02	-0.01	-0.01	65th Driest	Driest since: 1988	1964
Oct 1989–Jan 1990 4-Month	-0.02	-0.01	-0.01	66th Wettest	Wettest since: 1989	1950
Sep 1989–Jan 1990 5-Month	0.03	-0.03	0.06	68th Driest	Driest since: 1988	1964
Sep 1989–Jan 1990 5-Month	0.03	-0.03	0.06	63rd Wettest	Wettest since: 1989	2007
Aug 1989–Jan 1990 6-Month	0.20	-0.04	0.24	73rd Driest	Driest since: 1988	1931
	0.20	-0.04	0.24	58th Wettest	Wettest since: 1989	1916
	Ties: 1928
Jul 1989–Jan 1990 7-Month	0.48	-0.06	0.54	86th Driest	Driest since: 1988	1931
Jul 1989–Jan 1990 7-Month	0.48	-0.06	0.54	45th Wettest	Wettest since: 1989	2007
Jun 1989–Jan 1990 8-Month	0.79	-0.03	0.82	100th Driest	Driest since: 1989	1931
Jun 1989–Jan 1990 8-Month	0.79	-0.03	0.82	31st Wettest	Wettest since: 1986	1951
May 1989–Jan 1990 9-Month	0.61	-0.03	0.64	93rd Driest	Driest since: 1989	1931
May 1989–Jan 1990 9-Month	0.61	-0.03	0.64	38th Wettest	Wettest since: 1986	1951
Apr 1989–Jan 1990 10-Month	0.41	-0.03	0.44	79th Driest	Driest since: 1989	1931
Apr 1989–Jan 1990 10-Month	0.41	-0.03	0.44	52nd Wettest	Wettest since: 1986	1980
Mar 1989–Jan 1990 11-Month	0.44	-0.05	0.49	85th Driest	Driest since: 1989	1931
	0.44	-0.05	0.49	46th Wettest	Wettest since: 1986	1980
	Ties: 1969
Feb 1989–Jan 1990 12-Month	1.04	-0.06	1.10	117th Driest	Driest since: 1989	1931
Feb 1989–Jan 1990 12-Month	1.04	-0.06	1.10	14th Wettest	Wettest since: 1985	1980
Aug 1988–Jan 1990 18-Month	1.02	-0.05	1.07	122nd Driest	Driest since: 1989	1955
Aug 1988–Jan 1990 18-Month	1.02	-0.05	1.07	8th Wettest	Wettest since: 1980	1951
Feb 1988–Jan 1990 24-Month	0.47	-0.05	0.52	102nd Driest	Driest since: 1989	1932
Feb 1988–Jan 1990 24-Month	0.47	-0.05	0.52	28th Wettest	Wettest since: 1986	1951
Feb 1987–Jan 1990 36-Month	0.01	-0.05	0.06	68th Driest	Driest since: 1989	1955
	0.01	-0.05	0.06	61st Wettest	Wettest since: 1987	1951
	Ties: 1922
Feb 1986–Jan 1990 48-Month	-0.10	-0.05	-0.05	49th Driest	Driest since: 1989	1945
	-0.10	-0.05	-0.05	79th Wettest	Wettest since: 1988	1952
	Ties: 1901, 1921
Feb 1985–Jan 1990 60-Month	0.05	-0.06	0.11	60th Driest	Driest since: 1969	1945
Feb 1985–Jan 1990 60-Month	0.05	-0.06	0.11	67th Wettest	Wettest since: 1989	2020, 2021

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 28, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings

Climate at a Glance Divisional Rankings

Divisional Rankings

Kentucky, Climate Division 1

January 1990 Palmer Z-Index Rankings

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