Climate at a Glance | Statewide Rankings | National Centers for Environmental Information (NCEI)

Statewide 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

July 2008 Precipitation Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
July 2008 1-Month	5.91in (150.11mm)	3.64in (92.46mm)	2.27in	120th Driest	Driest since: 2007	1930
July 2008 1-Month	5.91in (150.11mm)	3.64in (92.46mm)	2.27in	11th Wettest	Wettest since: 1993	1958
Jun–Jul 2008 2-Month	11.40in (289.56mm)	7.72in (196.09mm)	3.68in	121st Driest	Driest since: 2007	1936
Jun–Jul 2008 2-Month	11.40in (289.56mm)	7.72in (196.09mm)	3.68in	10th Wettest	Wettest since: 2000	2015
May–Jul 2008 3-Month	16.76in (425.70mm)	11.80in (299.72mm)	4.96in	122nd Driest	Driest since: 2007	1936
May–Jul 2008 3-Month	16.76in (425.70mm)	11.80in (299.72mm)	4.96in	9th Wettest	Wettest since: 1990	2015
Apr–Jul 2008 4-Month	21.10in (535.94mm)	15.52in (394.21mm)	5.58in	119th Driest	Driest since: 2007	1988
Apr–Jul 2008 4-Month	21.10in (535.94mm)	15.52in (394.21mm)	5.58in	12th Wettest	Wettest since: 1996	1957
Mar–Jul 2008 5-Month	25.63in (651.00mm)	18.61in (472.69mm)	7.02in	126th Driest	Driest since: 2007	1936
Mar–Jul 2008 5-Month	25.63in (651.00mm)	18.61in (472.69mm)	7.02in	5th Wettest	Wettest since: 1973	1973
Feb–Jul 2008 6-Month	30.03in (762.76mm)	20.47in (519.94mm)	9.56in	130th Driest	Driest since: 2007	1936
Feb–Jul 2008 6-Month	30.03in (762.76mm)	20.47in (519.94mm)	9.56in	1st Wettest	Wettest to Date	2008
Jan–Jul 2008 7-Month	32.46in (824.48mm)	22.60in (574.04mm)	9.86in	130th Driest	Driest since: 2007	1936
Jan–Jul 2008 7-Month	32.46in (824.48mm)	22.60in (574.04mm)	9.86in	1st Wettest	Wettest to Date	2008
Dec 2007–Jul 2008 8-Month	36.33in (922.78mm)	24.92in (632.97mm)	11.41in	129th Driest	Driest since: 2007	1936
Dec 2007–Jul 2008 8-Month	36.33in (922.78mm)	24.92in (632.97mm)	11.41in	1st Wettest	Wettest to Date	2008
Nov 2007–Jul 2008 9-Month	38.05in (966.47mm)	27.67in (702.82mm)	10.38in	127th Driest	Driest since: 2007	1934
Nov 2007–Jul 2008 9-Month	38.05in (966.47mm)	27.67in (702.82mm)	10.38in	3rd Wettest	Wettest since: 1993	1993
Oct 2007–Jul 2008 10-Month	41.55in (1,055.37mm)	30.46in (773.68mm)	11.09in	128th Driest	Driest since: 2007	1934
Oct 2007–Jul 2008 10-Month	41.55in (1,055.37mm)	30.46in (773.68mm)	11.09in	2nd Wettest	Wettest to Date	2010
Sep 2007–Jul 2008 11-Month	43.14in (1,095.76mm)	33.96in (862.58mm)	9.18in	120th Driest	Driest since: 2007	1934
Sep 2007–Jul 2008 11-Month	43.14in (1,095.76mm)	33.96in (862.58mm)	9.18in	10th Wettest	Wettest since: 1993	1927
Aug 2007–Jul 2008 12-Month	47.50in (1,206.50mm)	37.46in (951.48mm)	10.04in	125th Driest	Driest since: 2007	1934
Aug 2007–Jul 2008 12-Month	47.50in (1,206.50mm)	37.46in (951.48mm)	10.04in	5th Wettest	Wettest since: 1973	1927
Feb 2007–Jul 2008 18-Month	66.21in (1,681.73mm)	57.89in	8.32in	112th Driest	Driest since: 2007	1931
Feb 2007–Jul 2008 18-Month	66.21in (1,681.73mm)	57.89in	8.32in	18th Wettest	Wettest since: 1999	2010
Aug 2006–Jul 2008 24-Month	87.13in (2,213.10mm)	74.90in	12.23in	118th Driest	Driest since: 2007	1954
Aug 2006–Jul 2008 24-Month	87.13in (2,213.10mm)	74.90in	12.23in	11th Wettest	Wettest since: 1994	2020
Aug 2005–Jul 2008 36-Month	123.01in (3,124.45mm)	112.32in	10.69in	105th Driest	Driest since: 2007	1965
Aug 2005–Jul 2008 36-Month	123.01in (3,124.45mm)	112.32in	10.69in	23rd Wettest	Wettest since: 1995	2010
Aug 2004–Jul 2008 48-Month	158.36in (4,022.34mm)	149.68in	8.68in	92nd Driest	Driest since: 2007	1956
Aug 2004–Jul 2008 48-Month	158.36in (4,022.34mm)	149.68in	8.68in	35th Wettest	Wettest since: 1998	2011
Aug 2003–Jul 2008 60-Month	197.02in (5,004.31mm)	187.11in	9.91in	83rd Driest	Driest since: 2007	1934
Aug 2003–Jul 2008 60-Month	197.02in (5,004.31mm)	187.11in	9.91in	43rd Wettest	Wettest since: 2002	2011

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2025, retrieved on March 30, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings

Climate at a Glance Statewide Rankings

Statewide Rankings

Illinois

July 2008 Precipitation Rankings

Citing This Page

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