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.

Kentucky, Climate Division 4

January 1940 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
January 1940 1-Month	-2.75	0.14	-2.89	3rd Driest	Driest since: 1931	1931
January 1940 1-Month	-2.75	0.14	-2.89	129th Wettest	Wettest since: 1939	1937
Dec 1939–Jan 1940 2-Month	-2.61	0.14	-2.75	3rd Driest	Driest since: 1931	1931
Dec 1939–Jan 1940 2-Month	-2.61	0.14	-2.75	128th Wettest	Wettest since: 1939	1979
Nov 1939–Jan 1940 3-Month	-2.76	0.08	-2.84	2nd Driest	Driest since: 1931	1931
Nov 1939–Jan 1940 3-Month	-2.76	0.08	-2.84	129th Wettest	Wettest since: 1939	1952, 1979
Oct 1939–Jan 1940 4-Month	-2.47	0.08	-2.55	2nd Driest	Driest since: 1931	1931
Oct 1939–Jan 1940 4-Month	-2.47	0.08	-2.55	129th Wettest	Wettest since: 1939	1920
Sep 1939–Jan 1940 5-Month	-2.45	0.04	-2.49	2nd Driest	Driest since: 1931	1931
Sep 1939–Jan 1940 5-Month	-2.45	0.04	-2.49	129th Wettest	Wettest since: 1939	2019
Aug 1939–Jan 1940 6-Month	-2.24	0.04	-2.28	2nd Driest	Driest since: 1931	1931
Aug 1939–Jan 1940 6-Month	-2.24	0.04	-2.28	129th Wettest	Wettest since: 1939	2019
Jul 1939–Jan 1940 7-Month	-1.68	0.00	-1.68	5th Driest	Driest since: 1931	1931
Jul 1939–Jan 1940 7-Month	-1.68	0.00	-1.68	126th Wettest	Wettest since: 1939	2019
Jun 1939–Jan 1940 8-Month	-1.36	0.04	-1.40	11th Driest	Driest since: 1931	1931
Jun 1939–Jan 1940 8-Month	-1.36	0.04	-1.40	120th Wettest	Wettest since: 1939	2019
May 1939–Jan 1940 9-Month	-1.49	0.03	-1.52	7th Driest	Driest since: 1931	1931
May 1939–Jan 1940 9-Month	-1.49	0.03	-1.52	124th Wettest	Wettest since: 1939	2019
Apr 1939–Jan 1940 10-Month	-1.18	0.03	-1.21	11th Driest	Driest since: 1931	1931
Apr 1939–Jan 1940 10-Month	-1.18	0.03	-1.21	120th Wettest	Wettest since: 1939	2019
Mar 1939–Jan 1940 11-Month	-1.04	0.04	-1.08	9th Driest	Driest since: 1931	1931
Mar 1939–Jan 1940 11-Month	-1.04	0.04	-1.08	122nd Wettest	Wettest since: 1939	2019
Feb 1939–Jan 1940 12-Month	-0.51	0.02	-0.53	28th Driest	Driest since: 1935	1931
Feb 1939–Jan 1940 12-Month	-0.51	0.02	-0.53	103rd Wettest	Wettest since: 1939	2019
Aug 1938–Jan 1940 18-Month	-0.33	0.03	-0.36	36th Driest	Driest since: 1935	1931
Aug 1938–Jan 1940 18-Month	-0.33	0.03	-0.36	94th Wettest	Wettest since: 1939	2020
Feb 1938–Jan 1940 24-Month	-0.04	0.03	-0.07	51st Driest	Driest since: 1938	1932
	-0.04	0.03	-0.07	79th Wettest	Wettest since: 1939	2020
	Ties: 1926
Feb 1937–Jan 1940 36-Month	-0.18	0.03	-0.21	36th Driest	Driest since: 1935	1955
	-0.18	0.03	-0.21	93rd Wettest	Wettest since: 1939	2021
	Ties: 1907, 1934
Feb 1936–Jan 1940 48-Month	-0.25	0.03	-0.28	30th Driest	Driest since: 1935	1956
Feb 1936–Jan 1940 48-Month	-0.25	0.03	-0.28	98th Wettest	Wettest since: 1939	2022
Feb 1935–Jan 1940 60-Month	0.08	0.03	0.05	67th Driest	Driest since: 1939	1935
Feb 1935–Jan 1940 60-Month	0.08	0.03	0.05	60th Wettest	Wettest since: 1930	2022, 2023

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 1940 Palmer Z-Index Rankings

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