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 4

October 1920 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
October 1920 1-Month	-2.39	-0.09	-2.30	16th Driest	Driest since: 1909	1908
October 1920 1-Month	-2.39	-0.09	-2.30	115th Wettest	Wettest since: 1919	1991
Sep–Oct 1920 2-Month	-1.43	-0.25	-1.18	31st Driest	Driest since: 1914	1908
Sep–Oct 1920 2-Month	-1.43	-0.25	-1.18	100th Wettest	Wettest since: 1919	1986
Aug–Oct 1920 3-Month	-0.89	-0.22	-0.67	45th Driest	Driest since: 1916	1908
Aug–Oct 1920 3-Month	-0.89	-0.22	-0.67	86th Wettest	Wettest since: 1919	1986
Jul–Oct 1920 4-Month	-0.42	-0.14	-0.28	54th Driest	Driest since: 1919	1955
Jul–Oct 1920 4-Month	-0.42	-0.14	-0.28	77th Wettest	Wettest since: 1917	1986
Jun–Oct 1920 5-Month	-0.11	-0.13	0.02	67th Driest	Driest since: 1919	1955
Jun–Oct 1920 5-Month	-0.11	-0.13	0.02	64th Wettest	Wettest since: 1917	1986
May–Oct 1920 6-Month	-0.51	-0.10	-0.41	38th Driest	Driest since: 1919	1955
May–Oct 1920 6-Month	-0.51	-0.10	-0.41	93rd Wettest	Wettest since: 1917	1986
Apr–Oct 1920 7-Month	-0.12	-0.07	-0.05	57th Driest	Driest since: 1919	1955
Apr–Oct 1920 7-Month	-0.12	-0.07	-0.05	74th Wettest	Wettest since: 1917	2014
Mar–Oct 1920 8-Month	-0.14	-0.06	-0.08	51st Driest	Driest since: 1919	1955
	-0.14	-0.06	-0.08	80th Wettest	Wettest since: 1919	1986
	Ties: 1919
Feb–Oct 1920 9-Month	-0.29	-0.04	-0.25	42nd Driest	Driest since: 1918	1955
Feb–Oct 1920 9-Month	-0.29	-0.04	-0.25	89th Wettest	Wettest since: 1919	1986
Jan–Oct 1920 10-Month	-0.25	-0.05	-0.20	48th Driest	Driest since: 1919	1955
Jan–Oct 1920 10-Month	-0.25	-0.05	-0.20	83rd Wettest	Wettest since: 1917	1975
Dec 1919–Oct 1920 11-Month	-0.37	-0.06	-0.31	39th Driest	Driest since: 1918	1955
Dec 1919–Oct 1920 11-Month	-0.37	-0.06	-0.31	91st Wettest	Wettest since: 1919	2020
Nov 1919–Oct 1920 12-Month	-0.25	-0.07	-0.18	45th Driest	Driest since: 1918	1914
Nov 1919–Oct 1920 12-Month	-0.25	-0.07	-0.18	85th Wettest	Wettest since: 1919	2020
May 1919–Oct 1920 18-Month	-0.34	-0.08	-0.26	37th Driest	Driest since: 1915	1914
May 1919–Oct 1920 18-Month	-0.34	-0.08	-0.26	93rd Wettest	Wettest since: 1919	2020
Nov 1918–Oct 1920 24-Month	-0.20	-0.07	-0.13	46th Driest	Driest since: 1919	1910
Nov 1918–Oct 1920 24-Month	-0.20	-0.07	-0.13	83rd Wettest	Wettest since: 1918	2020
Nov 1917–Oct 1920 36-Month	-0.35	-0.06	-0.29	34th Driest	Driest since: 1916	1910
Nov 1917–Oct 1920 36-Month	-0.35	-0.06	-0.29	94th Wettest	Wettest since: 1919	1986, 2020
Nov 1916–Oct 1920 48-Month	-0.18	-0.05	-0.13	45th Driest	Driest since: 1918	1911
Nov 1916–Oct 1920 48-Month	-0.18	-0.05	-0.13	82nd Wettest	Wettest since: 1919	1986
Nov 1915–Oct 1920 60-Month	-0.11	-0.05	-0.06	50th Driest	Driest since: 1919	1911
Nov 1915–Oct 1920 60-Month	-0.11	-0.05	-0.06	76th Wettest	Wettest since: 1907	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

Michigan, Climate Division 4

October 1920 Palmer Z-Index Rankings

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