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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 4

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	-0.92	0.14	-1.06	44th Driest	Driest since: 1988	1931
January 1990 1-Month	-0.92	0.14	-1.06	88th Wettest	Wettest since: 1989	1937
Dec 1989–Jan 1990 2-Month	-1.19	0.14	-1.33	23rd Driest	Driest since: 1986	1931
Dec 1989–Jan 1990 2-Month	-1.19	0.14	-1.33	108th Wettest	Wettest since: 1989	1979
Nov 1989–Jan 1990 3-Month	-0.49	0.08	-0.57	40th Driest	Driest since: 1988	1931
Nov 1989–Jan 1990 3-Month	-0.49	0.08	-0.57	91st Wettest	Wettest since: 1989	1952, 1979
Oct 1989–Jan 1990 4-Month	0.77	0.08	0.69	99th Driest	Driest since: 1989	1931
Oct 1989–Jan 1990 4-Month	0.77	0.08	0.69	32nd Wettest	Wettest since: 1987	1920
Sep 1989–Jan 1990 5-Month	1.47	0.04	1.43	121st Driest	Driest since: 1989	1931
Sep 1989–Jan 1990 5-Month	1.47	0.04	1.43	10th Wettest	Wettest since: 1952	2019
Aug 1989–Jan 1990 6-Month	1.42	0.04	1.38	122nd Driest	Driest since: 1989	1931
Aug 1989–Jan 1990 6-Month	1.42	0.04	1.38	9th Wettest	Wettest since: 1978	2019
Jul 1989–Jan 1990 7-Month	1.22	0.00	1.22	118th Driest	Driest since: 1989	1931
Jul 1989–Jan 1990 7-Month	1.22	0.00	1.22	13th Wettest	Wettest since: 1980	2019
Jun 1989–Jan 1990 8-Month	1.58	0.04	1.54	122nd Driest	Driest since: 1989	1931
Jun 1989–Jan 1990 8-Month	1.58	0.04	1.54	9th Wettest	Wettest since: 1980	2019
May 1989–Jan 1990 9-Month	1.65	0.03	1.62	126th Driest	Driest since: 1989	1931
May 1989–Jan 1990 9-Month	1.65	0.03	1.62	5th Wettest	Wettest since: 1916	2019
Apr 1989–Jan 1990 10-Month	1.43	0.03	1.40	125th Driest	Driest since: 1989	1931
Apr 1989–Jan 1990 10-Month	1.43	0.03	1.40	6th Wettest	Wettest since: 1980	2019
Mar 1989–Jan 1990 11-Month	1.36	0.04	1.32	126th Driest	Driest since: 1989	1931
Mar 1989–Jan 1990 11-Month	1.36	0.04	1.32	5th Wettest	Wettest since: 1936	2019
Feb 1989–Jan 1990 12-Month	1.57	0.02	1.55	128th Driest	Driest since: 1989	1931
Feb 1989–Jan 1990 12-Month	1.57	0.02	1.55	3rd Wettest	Wettest to Date	2019
Aug 1988–Jan 1990 18-Month	1.21	0.03	1.18	126th Driest	Driest since: 1989	1931
	1.21	0.03	1.18	4th Wettest	Wettest since: 1980	2020
	Ties: 1980
Feb 1988–Jan 1990 24-Month	0.49	0.03	0.46	97th Driest	Driest since: 1989	1932
	0.49	0.03	0.46	33rd Wettest	Wettest since: 1980	2020
	Ties: 1958
Feb 1987–Jan 1990 36-Month	0.02	0.03	-0.01	57th Driest	Driest since: 1989	1955
Feb 1987–Jan 1990 36-Month	0.02	0.03	-0.01	72nd Wettest	Wettest since: 1985	2021
Feb 1986–Jan 1990 48-Month	-0.13	0.03	-0.16	38th Driest	Driest since: 1989	1956
	-0.13	0.03	-0.16	90th Wettest	Wettest since: 1986	2022
	Ties: 1946, 1969
Feb 1985–Jan 1990 60-Month	-0.18	0.03	-0.21	31st Driest	Driest since: 1989	1935
	-0.18	0.03	-0.21	96th Wettest	Wettest since: 1987	2022, 2023
	Ties: 1968

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 29, 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 4

January 1990 Palmer Z-Index Rankings

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