Divisional Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska. 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 7. East Southeast

Average Temperature Rankings, September 2009

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 2009 1-Month	67.1°F (19.5°C)	67.4°F (19.7°C)	-0.3°F (-0.2°C)	57th Coolest	Coolest since: 2006	1918
	67.1°F (19.5°C)	67.4°F (19.7°C)	-0.3°F (-0.2°C)	72nd Warmest	Warmest since: 2008	1925
	Ties: 1963
Aug–Sep 2009 2-Month	69.7°F (20.9°C)	70.8°F (21.6°C)	-1.1°F (-0.7°C)	37th Coolest	Coolest since: 2004	1967
Aug–Sep 2009 2-Month	69.7°F (20.9°C)	70.8°F (21.6°C)	-1.1°F (-0.7°C)	92nd Warmest	Warmest since: 2008	1936
Jul–Sep 2009 3-Month	70.3°F (21.3°C)	72.6°F (22.6°C)	-2.3°F (-1.3°C)	6th Coolest	Coolest since: 1992	1967
	70.3°F (21.3°C)	72.6°F (22.6°C)	-2.3°F (-1.3°C)	123rd Warmest	Warmest since: 2008	1936
	Ties: 1902, 1992
Jun–Sep 2009 4-Month	71.4°F (21.9°C)	72.6°F (22.6°C)	-1.2°F (-0.7°C)	27th Coolest	Coolest since: 2004	1967
	71.4°F (21.9°C)	72.6°F (22.6°C)	-1.2°F (-0.7°C)	102nd Warmest	Warmest since: 2008	1936
	Ties: 1896, 1912, 1962, 1975
May–Sep 2009 5-Month	69.9°F (21.1°C)	70.8°F (21.6°C)	-0.9°F (-0.5°C)	36th Coolest	Coolest since: 2003	1924
May–Sep 2009 5-Month	69.9°F (21.1°C)	70.8°F (21.6°C)	-0.9°F (-0.5°C)	93rd Warmest	Warmest since: 2008	1936
Apr–Sep 2009 6-Month	67.1°F (19.5°C)	67.7°F (19.8°C)	-0.6°F (-0.3°C)	38th Coolest	Coolest since: 2003	1907
	67.1°F (19.5°C)	67.7°F (19.8°C)	-0.6°F (-0.3°C)	91st Warmest	Warmest since: 2008	2010
	Ties: 1975, 2003, 2020
Mar–Sep 2009 7-Month	64.2°F (17.9°C)	64.0°F (17.8°C)	0.2°F (0.1°C)	66th Coolest	Coolest since: 2008	1924
	64.2°F (17.9°C)	64.0°F (17.8°C)	0.2°F (0.1°C)	63rd Warmest	Warmest since: 2007	2012
	Ties: 1901
Feb–Sep 2009 8-Month	60.4°F (15.8°C)	59.9°F (15.5°C)	0.5°F (0.3°C)	77th Coolest	Coolest since: 2008	1904, 1924
	60.4°F (15.8°C)	59.9°F (15.5°C)	0.5°F (0.3°C)	52nd Warmest	Warmest since: 2007	2012
	Ties: 1896, 1913, 1949, 2020
Jan–Sep 2009 9-Month	56.3°F (13.5°C)	56.3°F (13.5°C)	0.0°F (0.0°C)	61st Coolest	Coolest since: 2008	1979
	56.3°F (13.5°C)	56.3°F (13.5°C)	0.0°F (0.0°C)	68th Warmest	Warmest since: 2007	2012
	Ties: 1974, 1981
Dec 2008–Sep 2009 10-Month	53.7°F (12.1°C)	53.9°F (12.2°C)	-0.2°F (-0.1°C)	53rd Coolest	Coolest since: 2008	1904
	53.7°F (12.1°C)	53.9°F (12.2°C)	-0.2°F (-0.1°C)	75th Warmest	Warmest since: 2007	2012
	Ties: 1900, 1906, 1927, 1975
Nov 2008–Sep 2009 11-Month	52.6°F (11.4°C)	52.8°F (11.6°C)	-0.2°F (-0.2°C)	48th Coolest	Coolest since: 2003	1904
	52.6°F (11.4°C)	52.8°F (11.6°C)	-0.2°F (-0.2°C)	80th Warmest	Warmest since: 2008	2012
	Ties: 1906, 1966
Oct 2008–Sep 2009 12-Month	52.9°F (11.6°C)	53.1°F (11.7°C)	-0.2°F (-0.1°C)	52nd Coolest	Coolest since: 2003	1904
	52.9°F (11.6°C)	53.1°F (11.7°C)	-0.2°F (-0.1°C)	76th Warmest	Warmest since: 2008	2012
	Ties: 1975, 1980
Apr 2008–Sep 2009 18-Month	57.7°F (14.3°C)	58.0°F (14.4°C)	-0.3°F (-0.1°C)	44th Coolest	Coolest since: 2001	1918
	57.7°F (14.3°C)	58.0°F (14.4°C)	-0.3°F (-0.1°C)	84th Warmest	Warmest since: 2008	2012
	Ties: 1903, 1906, 1947, 1960
Oct 2007–Sep 2009 24-Month	53.2°F (11.8°C)	53.1°F (11.7°C)	0.1°F (0.1°C)	71st Coolest	Coolest since: 2004	1979
	53.2°F (11.8°C)	53.1°F (11.7°C)	0.1°F (0.1°C)	56th Warmest	Warmest since: 2008	2017
	Ties: 1909, 1920, 1965, 1972, 1975, 1989, 1993, 1996, 2004
Oct 2006–Sep 2009 36-Month	53.8°F (12.1°C)	53.0°F (11.7°C)	0.8°F (0.4°C)	91st Coolest	Coolest since: 2003	1979
	53.8°F (12.1°C)	53.0°F (11.7°C)	0.8°F (0.4°C)	35th Warmest	Warmest since: 2008	2018
	Ties: 1957
Oct 2005–Sep 2009 48-Month	54.1°F (12.3°C)	53.1°F (11.7°C)	1.0°F (0.6°C)	105th Coolest	Coolest since: 2006	1980
	54.1°F (12.3°C)	53.1°F (11.7°C)	1.0°F (0.6°C)	20th Warmest	Warmest since: 2008	2019
	Ties: 1988, 2006, 2021
Oct 2004–Sep 2009 60-Month	54.3°F (12.4°C)	53.0°F (11.7°C)	1.3°F (0.7°C)	112th Coolest	Coolest since: 2007	1982
	54.3°F (12.4°C)	53.0°F (11.7°C)	1.3°F (0.7°C)	12th Warmest	Warmest since: 2008	2020
	Ties: 1936, 1956, 2007

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on February 7, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings