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 1999 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1999 1-Month	-1.34	-0.11	-1.23	29th Driest	Driest since: 1998	1930
December 1999 1-Month	-1.34	-0.11	-1.23	102nd Wettest	Wettest since: 1996	1972
Nov–Dec 1999 2-Month	-2.35	-0.08	-2.27	9th Driest	Driest since: 1998	1930
Nov–Dec 1999 2-Month	-2.35	-0.08	-2.27	122nd Wettest	Wettest since: 1997	1959
Oct–Dec 1999 3-Month	-2.04	-0.05	-1.99	9th Driest	Driest since: 1964	1930
Oct–Dec 1999 3-Month	-2.04	-0.05	-1.99	122nd Wettest	Wettest since: 1998	1990
Sep–Dec 1999 4-Month	-1.60	-0.07	-1.53	18th Driest	Driest since: 1998	1930
Sep–Dec 1999 4-Month	-1.60	-0.07	-1.53	113th Wettest	Wettest since: 1997	1986
Aug–Dec 1999 5-Month	-1.49	-0.05	-1.44	13th Driest	Driest since: 1998	1930
Aug–Dec 1999 5-Month	-1.49	-0.05	-1.44	118th Wettest	Wettest since: 1997	1986
Jul–Dec 1999 6-Month	-0.83	0.02	-0.85	27th Driest	Driest since: 1998	1930
Jul–Dec 1999 6-Month	-0.83	0.02	-0.85	104th Wettest	Wettest since: 1997	1986
Jun–Dec 1999 7-Month	-0.82	0.02	-0.84	31st Driest	Driest since: 1998	1930
	-0.82	0.02	-0.84	100th Wettest	Wettest since: 1997	1986
	Ties: 1978
May–Dec 1999 8-Month	-0.88	0.05	-0.93	24th Driest	Driest since: 1998	1930
	-0.88	0.05	-0.93	107th Wettest	Wettest since: 1997	1902
	Ties: 1919
Apr–Dec 1999 9-Month	-0.68	0.07	-0.75	28th Driest	Driest since: 1998	1930
Apr–Dec 1999 9-Month	-0.68	0.07	-0.75	103rd Wettest	Wettest since: 1997	1996
Mar–Dec 1999 10-Month	-0.82	0.06	-0.88	20th Driest	Driest since: 1998	1930
Mar–Dec 1999 10-Month	-0.82	0.06	-0.88	111th Wettest	Wettest since: 1997	1902
Feb–Dec 1999 11-Month	-0.83	0.06	-0.89	19th Driest	Driest since: 1998	1930
Feb–Dec 1999 11-Month	-0.83	0.06	-0.89	112th Wettest	Wettest since: 1997	1996
Jan–Dec 1999 12-Month	-0.63	0.07	-0.70	21st Driest	Driest since: 1998	1930
	-0.63	0.07	-0.70	110th Wettest	Wettest since: 1997	1996
	Ties: 1966
Jul 1998–Dec 1999 18-Month	-1.12	0.05	-1.17	6th Driest	Driest since: 1964	1931
Jul 1998–Dec 1999 18-Month	-1.12	0.05	-1.17	124th Wettest	Wettest since: 1998	1986
Jan 1998–Dec 1999 24-Month	-0.78	0.06	-0.84	6th Driest	Driest since: 1964	1931
Jan 1998–Dec 1999 24-Month	-0.78	0.06	-0.84	124th Wettest	Wettest since: 1998	1986
Jan 1997–Dec 1999 36-Month	-0.34	0.06	-0.40	22nd Driest	Driest since: 1966	1936
	-0.34	0.06	-0.40	107th Wettest	Wettest since: 1998	1986
	Ties: 1941
Jan 1996–Dec 1999 48-Month	0.18	0.07	0.11	71st Driest	Driest since: 1990	1936
Jan 1996–Dec 1999 48-Month	0.18	0.07	0.11	57th Wettest	Wettest since: 1998	1986
Jan 1995–Dec 1999 60-Month	0.06	0.07	-0.01	56th Driest	Driest since: 1980	1934
	0.06	0.07	-0.01	71st Wettest	Wettest since: 1998	1986
	Ties: 1969

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 1999 Palmer Z-Index Rankings

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