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 1

October 1940 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
October 1940 1-Month	-3.04	0.10	-3.14	4th Driest	Driest since: 1924	1963
October 1940 1-Month	-3.04	0.10	-3.14	127th Wettest	Wettest since: 1939	2009
Sep–Oct 1940 2-Month	-2.65	0.00	-2.65	6th Driest	Driest since: 1939	1897
Sep–Oct 1940 2-Month	-2.65	0.00	-2.65	125th Wettest	Wettest since: 1938	2006
Aug–Oct 1940 3-Month	-2.15	-0.03	-2.12	5th Driest	Driest since: 1939	1953
Aug–Oct 1940 3-Month	-2.15	-0.03	-2.12	126th Wettest	Wettest since: 1938	2006
Jul–Oct 1940 4-Month	-2.07	-0.07	-2.00	5th Driest	Driest since: 1930	1953
Jul–Oct 1940 4-Month	-2.07	-0.07	-2.00	126th Wettest	Wettest since: 1939	2009
Jun–Oct 1940 5-Month	-1.78	-0.02	-1.76	8th Driest	Driest since: 1936	1953
Jun–Oct 1940 5-Month	-1.78	-0.02	-1.76	123rd Wettest	Wettest since: 1939	2009
May–Oct 1940 6-Month	-1.58	-0.03	-1.55	8th Driest	Driest since: 1936	1930
May–Oct 1940 6-Month	-1.58	-0.03	-1.55	123rd Wettest	Wettest since: 1939	2009
Apr–Oct 1940 7-Month	-1.08	-0.03	-1.05	17th Driest	Driest since: 1936	1930
Apr–Oct 1940 7-Month	-1.08	-0.03	-1.05	114th Wettest	Wettest since: 1939	2009
Mar–Oct 1940 8-Month	-0.95	-0.05	-0.90	20th Driest	Driest since: 1936	1930
Mar–Oct 1940 8-Month	-0.95	-0.05	-0.90	111th Wettest	Wettest since: 1939	1979
Feb–Oct 1940 9-Month	-0.82	-0.06	-0.76	21st Driest	Driest since: 1936	1930
Feb–Oct 1940 9-Month	-0.82	-0.06	-0.76	110th Wettest	Wettest since: 1939	1979
Jan–Oct 1940 10-Month	-0.95	-0.04	-0.91	17th Driest	Driest since: 1936	1930
Jan–Oct 1940 10-Month	-0.95	-0.04	-0.91	114th Wettest	Wettest since: 1939	1950
Dec 1939–Oct 1940 11-Month	-1.10	-0.04	-1.06	13th Driest	Driest since: 1936	1936
Dec 1939–Oct 1940 11-Month	-1.10	-0.04	-1.06	117th Wettest	Wettest since: 1939	1979
Nov 1939–Oct 1940 12-Month	-1.25	-0.06	-1.19	9th Driest	Driest since: 1936	1936
Nov 1939–Oct 1940 12-Month	-1.25	-0.06	-1.19	121st Wettest	Wettest since: 1939	1979
May 1939–Oct 1940 18-Month	-1.33	-0.05	-1.28	7th Driest	Driest since: 1931	1931
May 1939–Oct 1940 18-Month	-1.33	-0.05	-1.28	123rd Wettest	Wettest since: 1939	1950
Nov 1938–Oct 1940 24-Month	-0.80	-0.06	-0.74	10th Driest	Driest since: 1931	1931
Nov 1938–Oct 1940 24-Month	-0.80	-0.06	-0.74	119th Wettest	Wettest since: 1939	1950
Nov 1937–Oct 1940 36-Month	-0.52	-0.06	-0.46	18th Driest	Driest since: 1936	1942
	-0.52	-0.06	-0.46	110th Wettest	Wettest since: 1939	1951
	Ties: 1901
Nov 1936–Oct 1940 48-Month	-0.25	-0.05	-0.20	33rd Driest	Driest since: 1939	1944
Nov 1936–Oct 1940 48-Month	-0.25	-0.05	-0.20	94th Wettest	Wettest since: 1938	2021
Nov 1935–Oct 1940 60-Month	-0.54	-0.05	-0.49	12th Driest	Driest since: 1934	1944
Nov 1935–Oct 1940 60-Month	-0.54	-0.05	-0.49	114th Wettest	Wettest since: 1939	2020

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

Kentucky, Climate Division 1

October 1940 Palmer Z-Index Rankings

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