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 6

December 1991 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1991 1-Month	0.36	-0.19	0.55	84th Driest	Driest since: 1989	1930
December 1991 1-Month	0.36	-0.19	0.55	47th Wettest	Wettest since: 1990	2008
Nov–Dec 1991 2-Month	0.98	-0.18	1.16	101st Driest	Driest since: 1989	1930
	0.98	-0.18	1.16	30th Wettest	Wettest since: 1990	2019
	Ties: 1941, 1975
Oct–Dec 1991 3-Month	2.15	-0.13	2.28	122nd Driest	Driest since: 1989	1930
Oct–Dec 1991 3-Month	2.15	-0.13	2.28	9th Wettest	Wettest since: 1990	2019
Sep–Dec 1991 4-Month	1.25	-0.16	1.41	113th Driest	Driest since: 1989	1930
Sep–Dec 1991 4-Month	1.25	-0.16	1.41	18th Wettest	Wettest since: 1990	2019
Aug–Dec 1991 5-Month	0.89	-0.16	1.05	107th Driest	Driest since: 1989	1930
	0.89	-0.16	1.05	24th Wettest	Wettest since: 1990	1985
	Ties: 1911
Jul–Dec 1991 6-Month	1.23	-0.09	1.32	118th Driest	Driest since: 1989	1930
Jul–Dec 1991 6-Month	1.23	-0.09	1.32	13th Wettest	Wettest since: 1990	1986
Jun–Dec 1991 7-Month	0.81	-0.08	0.89	104th Driest	Driest since: 1989	1930
Jun–Dec 1991 7-Month	0.81	-0.08	0.89	27th Wettest	Wettest since: 1990	1986
May–Dec 1991 8-Month	0.69	-0.05	0.74	101st Driest	Driest since: 1989	1930
	0.69	-0.05	0.74	30th Wettest	Wettest since: 1990	2019
	Ties: 1982
Apr–Dec 1991 9-Month	1.07	-0.03	1.10	114th Driest	Driest since: 1989	1930
Apr–Dec 1991 9-Month	1.07	-0.03	1.10	17th Wettest	Wettest since: 1990	2019
Mar–Dec 1991 10-Month	1.22	-0.02	1.24	122nd Driest	Driest since: 1990	1930
Mar–Dec 1991 10-Month	1.22	-0.02	1.24	9th Wettest	Wettest since: 1986	2019
Feb–Dec 1991 11-Month	1.01	-0.01	1.02	114th Driest	Driest since: 1989	1930
Feb–Dec 1991 11-Month	1.01	-0.01	1.02	17th Wettest	Wettest since: 1990	2019
Jan–Dec 1991 12-Month	0.91	0.00	0.91	115th Driest	Driest since: 1989	1930
Jan–Dec 1991 12-Month	0.91	0.00	0.91	16th Wettest	Wettest since: 1990	2019
Jul 1990–Dec 1991 18-Month	1.20	-0.03	1.23	127th Driest	Driest since: 1990	1931
Jul 1990–Dec 1991 18-Month	1.20	-0.03	1.23	3rd Wettest	Wettest since: 1986	1986
Jan 1990–Dec 1991 24-Month	1.01	0.00	1.01	123rd Driest	Driest since: 1990	1931
Jan 1990–Dec 1991 24-Month	1.01	0.00	1.01	7th Wettest	Wettest since: 1986	2019
Jan 1989–Dec 1991 36-Month	0.49	0.00	0.49	106th Driest	Driest since: 1990	1936
Jan 1989–Dec 1991 36-Month	0.49	0.00	0.49	23rd Wettest	Wettest since: 1987	2019
Jan 1988–Dec 1991 48-Month	0.32	0.00	0.32	90th Driest	Driest since: 1990	1936
Jan 1988–Dec 1991 48-Month	0.32	0.00	0.32	38th Wettest	Wettest since: 1988	2019
Jan 1987–Dec 1991 60-Month	0.15	0.00	0.15	80th Driest	Driest since: 1982	1934
	0.15	0.00	0.15	47th Wettest	Wettest since: 1990	2021
	Ties: 1952, 1971

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 24, 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

December 1991 Palmer Z-Index Rankings

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