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 8. Southwest

Average Temperature Rankings, June 2009

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
June 2009 1-Month	76.4°F (24.7°C)	73.9°F (23.3°C)	2.5°F (1.4°C)	108th Coolest	Coolest since: 2008	1903
	76.4°F (24.7°C)	73.9°F (23.3°C)	2.5°F (1.4°C)	21st Warmest	Warmest since: 1991	1952
	Ties: 1922, 1943, 1986
May–Jun 2009 2-Month	70.9°F (21.6°C)	69.5°F (20.8°C)	1.4°F (0.8°C)	94th Coolest	Coolest since: 2008	1907
	70.9°F (21.6°C)	69.5°F (20.8°C)	1.4°F (0.8°C)	35th Warmest	Warmest since: 2007	2018
	Ties: 1949, 1975, 1996, 2011
Apr–Jun 2009 3-Month	65.7°F (18.7°C)	64.8°F (18.2°C)	0.9°F (0.5°C)	82nd Coolest	Coolest since: 2008	1907
	65.7°F (18.7°C)	64.8°F (18.2°C)	0.9°F (0.5°C)	47th Warmest	Warmest since: 2007	2010
	Ties: 1895, 1970, 1988
Mar–Jun 2009 4-Month	61.4°F (16.3°C)	59.7°F (15.4°C)	1.7°F (0.9°C)	103rd Coolest	Coolest since: 2008	1960
	61.4°F (16.3°C)	59.7°F (15.4°C)	1.7°F (0.9°C)	26th Warmest	Warmest since: 2007	2012
	Ties: 1985
Feb–Jun 2009 5-Month	56.8°F (13.8°C)	54.8°F (12.7°C)	2.0°F (1.1°C)	110th Coolest	Coolest since: 2008	1912, 1960, 1978
	56.8°F (13.8°C)	54.8°F (12.7°C)	2.0°F (1.1°C)	19th Warmest	Warmest since: 2000	2012
	Ties: 2011
Jan–Jun 2009 6-Month	52.0°F (11.1°C)	50.8°F (10.4°C)	1.2°F (0.7°C)	94th Coolest	Coolest since: 2008	1912, 1978
	52.0°F (11.1°C)	50.8°F (10.4°C)	1.2°F (0.7°C)	35th Warmest	Warmest since: 2007	2012
	Ties: 1922, 1934, 1955, 2011, 2018
Dec 2008–Jun 2009 7-Month	49.4°F (9.7°C)	48.5°F (9.2°C)	0.9°F (0.5°C)	79th Coolest	Coolest since: 2008	1978
	49.4°F (9.7°C)	48.5°F (9.2°C)	0.9°F (0.5°C)	49th Warmest	Warmest since: 2007	2012
	Ties: 1950
Nov 2008–Jun 2009 8-Month	48.7°F (9.3°C)	48.0°F (8.9°C)	0.7°F (0.4°C)	77th Coolest	Coolest since: 2008	1912
	48.7°F (9.3°C)	48.0°F (8.9°C)	0.7°F (0.4°C)	51st Warmest	Warmest since: 2007	2012
	Ties: 1988, 1990
Oct 2008–Jun 2009 9-Month	49.6°F (9.8°C)	49.1°F (9.5°C)	0.5°F (0.3°C)	76th Coolest	Coolest since: 2008	1912, 1978
	49.6°F (9.8°C)	49.1°F (9.5°C)	0.5°F (0.3°C)	52nd Warmest	Warmest since: 2008	2012
	Ties: 1909, 2008, 2013, 2019
Sep 2008–Jun 2009 10-Month	51.6°F (10.9°C)	51.1°F (10.6°C)	0.5°F (0.3°C)	78th Coolest	Coolest since: 2003	1978
	51.6°F (10.9°C)	51.1°F (10.6°C)	0.5°F (0.3°C)	50th Warmest	Warmest since: 2008	2012
	Ties: 1896, 1923, 1933
Aug 2008–Jun 2009 11-Month	53.7°F (12.1°C)	53.3°F (11.8°C)	0.4°F (0.3°C)	69th Coolest	Coolest since: 2003	1904, 1978
	53.7°F (12.1°C)	53.3°F (11.8°C)	0.4°F (0.3°C)	59th Warmest	Warmest since: 2008	2012
	Ties: 2013
Jul 2008–Jun 2009 12-Month	55.6°F (13.1°C)	55.3°F (12.9°C)	0.3°F (0.2°C)	67th Coolest	Coolest since: 2003	1904, 1912, 1918, 1978
	55.6°F (13.1°C)	55.3°F (12.9°C)	0.3°F (0.2°C)	61st Warmest	Warmest since: 2008	2012
	Ties: 1896, 1927, 1967, 1988, 1990
Jan 2008–Jun 2009 18-Month	53.9°F (12.2°C)	53.9°F (12.2°C)	0.0°F (0.0°C)	60th Coolest	Coolest since: 1997	1979
	53.9°F (12.2°C)	53.9°F (12.2°C)	0.0°F (0.0°C)	68th Warmest	Warmest since: 2008	2017
	Ties: 1901, 1915, 1981
Jul 2007–Jun 2009 24-Month	56.1°F (13.4°C)	55.4°F (13.0°C)	0.7°F (0.4°C)	91st Coolest	Coolest since: 2004	1978, 1979
	56.1°F (13.4°C)	55.4°F (13.0°C)	0.7°F (0.4°C)	36th Warmest	Warmest since: 2008	2017
	Ties: 1957
Jul 2006–Jun 2009 36-Month	56.3°F (13.5°C)	55.4°F (13.0°C)	0.9°F (0.5°C)	98th Coolest	Coolest since: 2005	1979
Jul 2006–Jun 2009 36-Month	56.3°F (13.5°C)	55.4°F (13.0°C)	0.9°F (0.5°C)	28th Warmest	Warmest since: 2008	2018
Jul 2005–Jun 2009 48-Month	56.7°F (13.7°C)	55.4°F (13.0°C)	1.3°F (0.7°C)	113th Coolest	Coolest since: 2006	1980
	56.7°F (13.7°C)	55.4°F (13.0°C)	1.3°F (0.7°C)	12th Warmest	Warmest since: 2008	2019
	Ties: 1955, 1956
Jul 2004–Jun 2009 60-Month	56.7°F (13.7°C)	55.4°F (13.0°C)	1.3°F (0.7°C)	117th Coolest	Coolest since: 2007	1980
	56.7°F (13.7°C)	55.4°F (13.0°C)	1.3°F (0.7°C)	7th Warmest	Warmest since: 2008	2020
	Ties: 1934, 1957, 2006, 2012, 2013

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on February 6, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings