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 7

December 2017 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 2017 1-Month	-0.64	-0.11	-0.53	48th Driest	Driest since: 2016	1930
December 2017 1-Month	-0.64	-0.11	-0.53	83rd Wettest	Wettest since: 2015	1972
Nov–Dec 2017 2-Month	-0.06	-0.08	0.02	57th Driest	Driest since: 2016	1930
Nov–Dec 2017 2-Month	-0.06	-0.08	0.02	74th Wettest	Wettest since: 2015	1959
Oct–Dec 2017 3-Month	0.40	-0.05	0.45	79th Driest	Driest since: 2016	1930
Oct–Dec 2017 3-Month	0.40	-0.05	0.45	52nd Wettest	Wettest since: 2014	1990
Sep–Dec 2017 4-Month	-0.62	-0.07	-0.55	49th Driest	Driest since: 2016	1930
Sep–Dec 2017 4-Month	-0.62	-0.07	-0.55	82nd Wettest	Wettest since: 2015	1986
Aug–Dec 2017 5-Month	-0.43	-0.05	-0.38	56th Driest	Driest since: 2010	1930
	-0.43	-0.05	-0.38	75th Wettest	Wettest since: 2016	1986
	Ties: 1933
Jul–Dec 2017 6-Month	-0.26	0.02	-0.28	55th Driest	Driest since: 2010	1930
Jul–Dec 2017 6-Month	-0.26	0.02	-0.28	76th Wettest	Wettest since: 2016	1986
Jun–Dec 2017 7-Month	0.31	0.02	0.29	82nd Driest	Driest since: 2016	1930
Jun–Dec 2017 7-Month	0.31	0.02	0.29	49th Wettest	Wettest since: 2015	1986
May–Dec 2017 8-Month	0.34	0.05	0.29	83rd Driest	Driest since: 2016	1930
May–Dec 2017 8-Month	0.34	0.05	0.29	48th Wettest	Wettest since: 2015	1902
Apr–Dec 2017 9-Month	0.63	0.07	0.56	91st Driest	Driest since: 2016	1930
Apr–Dec 2017 9-Month	0.63	0.07	0.56	40th Wettest	Wettest since: 2014	1996
Mar–Dec 2017 10-Month	0.72	0.06	0.66	101st Driest	Driest since: 2016	1930
Mar–Dec 2017 10-Month	0.72	0.06	0.66	30th Wettest	Wettest since: 2014	1902
Feb–Dec 2017 11-Month	0.68	0.06	0.62	96th Driest	Driest since: 2016	1930
Feb–Dec 2017 11-Month	0.68	0.06	0.62	35th Wettest	Wettest since: 2014	1996
Jan–Dec 2017 12-Month	0.84	0.07	0.77	103rd Driest	Driest since: 2016	1930
Jan–Dec 2017 12-Month	0.84	0.07	0.77	28th Wettest	Wettest since: 2014	1996
Jul 2016–Dec 2017 18-Month	0.55	0.05	0.50	97th Driest	Driest since: 2016	1931
	0.55	0.05	0.50	33rd Wettest	Wettest since: 2015	1986
	Ties: 1967
Jan 2016–Dec 2017 24-Month	0.53	0.06	0.47	101st Driest	Driest since: 2016	1931
Jan 2016–Dec 2017 24-Month	0.53	0.06	0.47	29th Wettest	Wettest since: 2015	1986
Jan 2015–Dec 2017 36-Month	0.38	0.06	0.32	89th Driest	Driest since: 2012	1936
	0.38	0.06	0.32	40th Wettest	Wettest since: 2016	1986
	Ties: 2011
Jan 2014–Dec 2017 48-Month	0.54	0.07	0.47	106th Driest	Driest since: 2015	1936
Jan 2014–Dec 2017 48-Month	0.54	0.07	0.47	22nd Wettest	Wettest since: 2016	1986
Jan 2013–Dec 2017 60-Month	0.62	0.07	0.55	117th Driest	Driest since: 2016	1934
	0.62	0.07	0.55	10th Wettest	Wettest since: 1997	1986
	Ties: 1988

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 22, 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 7

December 2017 Palmer Z-Index Rankings

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