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 5. East

Average Temperature Rankings, June 2009

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Record Coolest
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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
June 2009 1-Month	71.8°F (22.1°C)	70.4°F (21.3°C)	1.4°F (0.8°C)	83rd Coolest	Coolest since: 2006	1903
	71.8°F (22.1°C)	70.4°F (21.3°C)	1.4°F (0.8°C)	46th Warmest	Warmest since: 2008	1933
	Ties: 1901, 1922, 1923, 1967, 1999
May–Jun 2009 2-Month	66.9°F (19.4°C)	65.8°F (18.8°C)	1.1°F (0.6°C)	84th Coolest	Coolest since: 2008	1907
	66.9°F (19.4°C)	65.8°F (18.8°C)	1.1°F (0.6°C)	45th Warmest	Warmest since: 2007	2018
	Ties: 1913
Apr–Jun 2009 3-Month	61.2°F (16.2°C)	60.4°F (15.8°C)	0.8°F (0.4°C)	74th Coolest	Coolest since: 2008	1907
	61.2°F (16.2°C)	60.4°F (15.8°C)	0.8°F (0.4°C)	55th Warmest	Warmest since: 2007	1991
	Ties: 2013
Mar–Jun 2009 4-Month	56.5°F (13.6°C)	54.9°F (12.7°C)	1.6°F (0.9°C)	99th Coolest	Coolest since: 2008	1926, 1960
	56.5°F (13.6°C)	54.9°F (12.7°C)	1.6°F (0.9°C)	30th Warmest	Warmest since: 2007	2012
	Ties: 1973, 2005
Feb–Jun 2009 5-Month	51.3°F (10.7°C)	49.4°F (9.7°C)	1.9°F (1.0°C)	104th Coolest	Coolest since: 2008	1904, 1947
	51.3°F (10.7°C)	49.4°F (9.7°C)	1.9°F (1.0°C)	25th Warmest	Warmest since: 2006	2012
	Ties: 1953
Jan–Jun 2009 6-Month	45.8°F (7.7°C)	45.2°F (7.3°C)	0.6°F (0.4°C)	77th Coolest	Coolest since: 2008	1912
	45.8°F (7.7°C)	45.2°F (7.3°C)	0.6°F (0.4°C)	52nd Warmest	Warmest since: 2007	2012
	Ties: 1927
Dec 2008–Jun 2009 7-Month	42.9°F (6.1°C)	42.7°F (5.9°C)	0.2°F (0.2°C)	65th Coolest	Coolest since: 2008	1904
	42.9°F (6.1°C)	42.7°F (5.9°C)	0.2°F (0.2°C)	63rd Warmest	Warmest since: 2007	2012
	Ties: 1927, 1967, 1972
Nov 2008–Jun 2009 8-Month	42.5°F (5.8°C)	42.3°F (5.7°C)	0.2°F (0.1°C)	66th Coolest	Coolest since: 2008	1904
	42.5°F (5.8°C)	42.3°F (5.7°C)	0.2°F (0.1°C)	62nd Warmest	Warmest since: 2007	2012
	Ties: 1966
Oct 2008–Jun 2009 9-Month	43.7°F (6.5°C)	43.6°F (6.4°C)	0.1°F (0.1°C)	67th Coolest	Coolest since: 2003	1904
	43.7°F (6.5°C)	43.6°F (6.4°C)	0.1°F (0.1°C)	61st Warmest	Warmest since: 2008	2012
	Ties: 1896, 1935, 2011
Sep 2008–Jun 2009 10-Month	46.0°F (7.8°C)	45.7°F (7.6°C)	0.3°F (0.2°C)	69th Coolest	Coolest since: 2003	1904
	46.0°F (7.8°C)	45.7°F (7.6°C)	0.3°F (0.2°C)	59th Warmest	Warmest since: 2008	2012
	Ties: 1928, 1948, 2011
Aug 2008–Jun 2009 11-Month	48.2°F (9.0°C)	48.1°F (8.9°C)	0.1°F (0.1°C)	59th Coolest	Coolest since: 2003	1904
	48.2°F (9.0°C)	48.1°F (8.9°C)	0.1°F (0.1°C)	69th Warmest	Warmest since: 2008	2012, 2017
	Ties: 1913, 2001
Jul 2008–Jun 2009 12-Month	50.3°F (10.2°C)	50.3°F (10.2°C)	0.0°F (0.0°C)	59th Coolest	Coolest since: 2001	1904
	50.3°F (10.2°C)	50.3°F (10.2°C)	0.0°F (0.0°C)	69th Warmest	Warmest since: 2008	2012
	Ties: 1913, 1923
Jan 2008–Jun 2009 18-Month	48.5°F (9.2°C)	48.6°F (9.2°C)	-0.1°F (0.0°C)	57th Coolest	Coolest since: 1997	1905
	48.5°F (9.2°C)	48.6°F (9.2°C)	-0.1°F (0.0°C)	71st Warmest	Warmest since: 2008	2017
	Ties: 1928, 1940, 1973
Jul 2007–Jun 2009 24-Month	50.8°F (10.4°C)	50.3°F (10.2°C)	0.5°F (0.2°C)	78th Coolest	Coolest since: 1998	1905
	50.8°F (10.4°C)	50.3°F (10.2°C)	0.5°F (0.2°C)	49th Warmest	Warmest since: 2008	2017
	Ties: 1940, 1973, 1975, 1998
Jul 2006–Jun 2009 36-Month	51.2°F (10.7°C)	50.3°F (10.2°C)	0.9°F (0.5°C)	91st Coolest	Coolest since: 2003	1905, 1906
	51.2°F (10.7°C)	50.3°F (10.2°C)	0.9°F (0.5°C)	35th Warmest	Warmest since: 2008	2018
	Ties: 1935
Jul 2005–Jun 2009 48-Month	51.6°F (10.9°C)	50.3°F (10.2°C)	1.3°F (0.7°C)	106th Coolest	Coolest since: 2004	1905
	51.6°F (10.9°C)	50.3°F (10.2°C)	1.3°F (0.7°C)	19th Warmest	Warmest since: 2008	2019
	Ties: 1955, 1957
Jul 2004–Jun 2009 60-Month	51.7°F (10.9°C)	50.3°F (10.2°C)	1.4°F (0.7°C)	114th Coolest	Coolest since: 2005	1906
	51.7°F (10.9°C)	50.3°F (10.2°C)	1.4°F (0.7°C)	10th Warmest	Warmest since: 2008	2020
	Ties: 1934, 1991, 2012, 2013

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2023, retrieved on April 1, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings