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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.

Michigan, Climate Division 6

January 1978 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
January 1978 1-Month	1.06	0.10	0.96	95th Driest	Driest since: 1977	1945
January 1978 1-Month	1.06	0.10	0.96	37th Wettest	Wettest since: 1975	1897
Dec 1977–Jan 1978 2-Month	1.30	-0.06	1.36	107th Driest	Driest since: 1977	1977
Dec 1977–Jan 1978 2-Month	1.30	-0.06	1.36	24th Wettest	Wettest since: 1974	2013
Nov 1977–Jan 1978 3-Month	0.91	-0.09	1.00	100th Driest	Driest since: 1977	1931
	0.91	-0.09	1.00	31st Wettest	Wettest since: 1973	2020
	Ties: 1941
Oct 1977–Jan 1978 4-Month	0.68	-0.07	0.75	92nd Driest	Driest since: 1977	1931
Oct 1977–Jan 1978 4-Month	0.68	-0.07	0.75	39th Wettest	Wettest since: 1973	2020
Sep 1977–Jan 1978 5-Month	0.75	-0.12	0.87	103rd Driest	Driest since: 1977	1931
Sep 1977–Jan 1978 5-Month	0.75	-0.12	0.87	28th Wettest	Wettest since: 1973	2020
Aug 1977–Jan 1978 6-Month	0.86	-0.12	0.98	107th Driest	Driest since: 1977	1931
Aug 1977–Jan 1978 6-Month	0.86	-0.12	0.98	24th Wettest	Wettest since: 1976	2020
Jul 1977–Jan 1978 7-Month	0.44	-0.07	0.51	88th Driest	Driest since: 1977	1931
Jul 1977–Jan 1978 7-Month	0.44	-0.07	0.51	43rd Wettest	Wettest since: 1976	2020
Jun 1977–Jan 1978 8-Month	0.06	-0.07	0.13	69th Driest	Driest since: 1977	1931
Jun 1977–Jan 1978 8-Month	0.06	-0.07	0.13	62nd Wettest	Wettest since: 1976	2020
May 1977–Jan 1978 9-Month	-0.41	-0.05	-0.36	44th Driest	Driest since: 1977	1931
May 1977–Jan 1978 9-Month	-0.41	-0.05	-0.36	87th Wettest	Wettest since: 1976	2020
Apr 1977–Jan 1978 10-Month	-0.55	-0.03	-0.52	29th Driest	Driest since: 1977	1931
Apr 1977–Jan 1978 10-Month	-0.55	-0.03	-0.52	102nd Wettest	Wettest since: 1976	2020
Mar 1977–Jan 1978 11-Month	-0.52	-0.02	-0.50	29th Driest	Driest since: 1977	1931
Mar 1977–Jan 1978 11-Month	-0.52	-0.02	-0.50	102nd Wettest	Wettest since: 1976	2020
Feb 1977–Jan 1978 12-Month	-0.63	0.00	-0.63	19th Driest	Driest since: 1972	1931
Feb 1977–Jan 1978 12-Month	-0.63	0.00	-0.63	112th Wettest	Wettest since: 1977	2020
Aug 1976–Jan 1978 18-Month	-1.29	-0.04	-1.25	4th Driest	Driest since: 1932	1931
Aug 1976–Jan 1978 18-Month	-1.29	-0.04	-1.25	126th Wettest	Wettest since: 1977	2020
Feb 1976–Jan 1978 24-Month	-0.50	0.00	-0.50	18th Driest	Driest since: 1965	1932
Feb 1976–Jan 1978 24-Month	-0.50	0.00	-0.50	112th Wettest	Wettest since: 1977	2020
Feb 1975–Jan 1978 36-Month	0.14	0.00	0.14	78th Driest	Driest since: 1974	1937, 1965
	0.14	0.00	0.14	51st Wettest	Wettest since: 1977	2020
	Ties: 1948
Feb 1974–Jan 1978 48-Month	0.29	0.00	0.29	90th Driest	Driest since: 1975	1937
Feb 1974–Jan 1978 48-Month	0.29	0.00	0.29	38th Wettest	Wettest since: 1977	2020
Feb 1973–Jan 1978 60-Month	0.27	0.00	0.27	92nd Driest	Driest since: 1974	1935
Feb 1973–Jan 1978 60-Month	0.27	0.00	0.27	35th Wettest	Wettest since: 1977	1995, 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 6

January 1978 Palmer Z-Index Rankings

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