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.

Illinois, Climate Division 3

December 2010 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 2010 1-Month	0.06	-0.21	0.27	79th Driest	Driest since: 2007	1963
December 2010 1-Month	0.06	-0.21	0.27	52nd Wettest	Wettest since: 2009	1982
Nov–Dec 2010 2-Month	-0.17	-0.11	-0.06	68th Driest	Driest since: 2007	1953
Nov–Dec 2010 2-Month	-0.17	-0.11	-0.06	63rd Wettest	Wettest since: 2009	1985
Oct–Dec 2010 3-Month	-0.30	-0.12	-0.18	64th Driest	Driest since: 2007	1953
Oct–Dec 2010 3-Month	-0.30	-0.12	-0.18	67th Wettest	Wettest since: 2009	1985
Sep–Dec 2010 4-Month	0.36	-0.04	0.40	80th Driest	Driest since: 2007	1953
Sep–Dec 2010 4-Month	0.36	-0.04	0.40	51st Wettest	Wettest since: 2009	1941
Aug–Dec 2010 5-Month	0.61	-0.05	0.66	90th Driest	Driest since: 2007	1901, 1953
Aug–Dec 2010 5-Month	0.61	-0.05	0.66	41st Wettest	Wettest since: 2009	1970
Jul–Dec 2010 6-Month	1.13	-0.04	1.17	103rd Driest	Driest since: 2007	1901, 1953
	1.13	-0.04	1.17	28th Wettest	Wettest since: 2009	1961
	Ties: 1965
Jun–Dec 2010 7-Month	1.86	-0.02	1.88	121st Driest	Driest since: 2007	1953
Jun–Dec 2010 7-Month	1.86	-0.02	1.88	10th Wettest	Wettest since: 2009	1993
May–Dec 2010 8-Month	2.00	-0.01	2.01	126th Driest	Driest since: 2008	1901
May–Dec 2010 8-Month	2.00	-0.01	2.01	5th Wettest	Wettest since: 2009	1993
Apr–Dec 2010 9-Month	1.79	-0.01	1.80	126th Driest	Driest since: 2008	1901
Apr–Dec 2010 9-Month	1.79	-0.01	1.80	5th Wettest	Wettest since: 2009	2009
Mar–Dec 2010 10-Month	1.59	-0.03	1.62	124th Driest	Driest since: 2008	1914
Mar–Dec 2010 10-Month	1.59	-0.03	1.62	7th Wettest	Wettest since: 2009	2009
Feb–Dec 2010 11-Month	1.51	-0.02	1.53	124th Driest	Driest since: 2007	1914
Feb–Dec 2010 11-Month	1.51	-0.02	1.53	7th Wettest	Wettest since: 2009	2009
Jan–Dec 2010 12-Month	1.43	-0.02	1.45	125th Driest	Driest since: 2007	1914
Jan–Dec 2010 12-Month	1.43	-0.02	1.45	6th Wettest	Wettest since: 2009	2009
Jul 2009–Dec 2010 18-Month	1.78	-0.03	1.81	127th Driest	Driest since: 2008	1914
Jul 2009–Dec 2010 18-Month	1.78	-0.03	1.81	3rd Wettest	Wettest since: 2009	1993
Jan 2009–Dec 2010 24-Month	1.78	-0.02	1.80	129th Driest	Driest since: 2009	1914
	1.78	-0.02	1.80	1st Wettest	Wettest since: 2009	2009, 2010
	Ties: 2009
Jan 2008–Dec 2010 36-Month	1.67	-0.02	1.69	128th Driest	Driest since: 2009	1989
Jan 2008–Dec 2010 36-Month	1.67	-0.02	1.69	1st Wettest	Wettest to Date	2010
Jan 2007–Dec 2010 48-Month	1.08	-0.02	1.10	126th Driest	Driest since: 2009	1914
Jan 2007–Dec 2010 48-Month	1.08	-0.02	1.10	2nd Wettest	Wettest to Date	2011
Jan 2006–Dec 2010 60-Month	0.67	-0.02	0.69	119th Driest	Driest since: 2009	1914
	0.67	-0.02	0.69	8th Wettest	Wettest since: 1986	1985
	Ties: 1928, 1974

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

Illinois, Climate Division 3

December 2010 Palmer Z-Index Rankings

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