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.

Michigan, Climate Division 2

December 1940 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1940 1-Month	-0.21	-0.27	0.06	62nd Driest	Driest since: 1939	1930
December 1940 1-Month	-0.21	-0.27	0.06	69th Wettest	Wettest since: 1938	2015
Nov–Dec 1940 2-Month	0.14	-0.25	0.39	73rd Driest	Driest since: 1939	1930
Nov–Dec 1940 2-Month	0.14	-0.25	0.39	58th Wettest	Wettest since: 1934	1977
Oct–Dec 1940 3-Month	-0.21	-0.15	-0.06	51st Driest	Driest since: 1939	1947
Oct–Dec 1940 3-Month	-0.21	-0.15	-0.06	80th Wettest	Wettest since: 1937	2014
Sep–Dec 1940 4-Month	-0.61	-0.16	-0.45	45th Driest	Driest since: 1939	1908
Sep–Dec 1940 4-Month	-0.61	-0.16	-0.45	86th Wettest	Wettest since: 1937	2019
Aug–Dec 1940 5-Month	-0.69	-0.18	-0.51	42nd Driest	Driest since: 1939	1930
	-0.69	-0.18	-0.51	89th Wettest	Wettest since: 1938	1896
	Ties: 1921
Jul–Dec 1940 6-Month	-0.65	-0.10	-0.55	42nd Driest	Driest since: 1939	1930
Jul–Dec 1940 6-Month	-0.65	-0.10	-0.55	89th Wettest	Wettest since: 1938	1896
Jun–Dec 1940 7-Month	-0.27	-0.12	-0.15	55th Driest	Driest since: 1939	1976
Jun–Dec 1940 7-Month	-0.27	-0.12	-0.15	76th Wettest	Wettest since: 1935	1896
May–Dec 1940 8-Month	-0.02	-0.10	0.08	63rd Driest	Driest since: 1939	1976
	-0.02	-0.10	0.08	68th Wettest	Wettest since: 1935	1896
	Ties: 1898
Apr–Dec 1940 9-Month	-0.04	-0.09	0.05	64th Driest	Driest since: 1939	1976
Apr–Dec 1940 9-Month	-0.04	-0.09	0.05	67th Wettest	Wettest since: 1932	2019
Mar–Dec 1940 10-Month	-0.13	-0.09	-0.04	54th Driest	Driest since: 1939	1895
Mar–Dec 1940 10-Month	-0.13	-0.09	-0.04	77th Wettest	Wettest since: 1932	2019
Feb–Dec 1940 11-Month	-0.15	-0.09	-0.06	57th Driest	Driest since: 1937	1895
Feb–Dec 1940 11-Month	-0.15	-0.09	-0.06	74th Wettest	Wettest since: 1939	2019
Jan–Dec 1940 12-Month	0.03	-0.08	0.11	69th Driest	Driest since: 1937	1930
	0.03	-0.08	0.11	62nd Wettest	Wettest since: 1939	2019
	Ties: 1899
Jul 1939–Dec 1940 18-Month	-0.41	-0.08	-0.33	35th Driest	Driest since: 1937	1948
Jul 1939–Dec 1940 18-Month	-0.41	-0.08	-0.33	95th Wettest	Wettest since: 1939	2019
Jan 1939–Dec 1940 24-Month	0.05	-0.07	0.12	76th Driest	Driest since: 1938	2006
Jan 1939–Dec 1940 24-Month	0.05	-0.07	0.12	54th Wettest	Wettest since: 1939	2020
Jan 1938–Dec 1940 36-Month	0.14	-0.07	0.21	83rd Driest	Driest since: 1939	2007
Jan 1938–Dec 1940 36-Month	0.14	-0.07	0.21	46th Wettest	Wettest since: 1929	2019
Jan 1937–Dec 1940 48-Month	-0.07	-0.06	-0.01	60th Driest	Driest since: 1939	2000
Jan 1937–Dec 1940 48-Month	-0.07	-0.06	-0.01	68th Wettest	Wettest since: 1929	2020
Jan 1936–Dec 1940 60-Month	-0.24	-0.06	-0.18	41st Driest	Driest since: 1939	1910
Jan 1936–Dec 1940 60-Month	-0.24	-0.06	-0.18	86th Wettest	Wettest since: 1932	2020

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

Michigan, Climate Division 2

December 1940 Palmer Z-Index Rankings

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