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, August 2008

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
August 2008 1-Month	74.5°F (23.6°C)	76.0°F (24.4°C)	-1.5°F (-0.8°C)	27th Coolest	Coolest since: 2004	1915
	74.5°F (23.6°C)	76.0°F (24.4°C)	-1.5°F (-0.8°C)	102nd Warmest	Warmest since: 2007	1936
	Ties: 1942, 2020
Jul–Aug 2008 2-Month	75.8°F (24.3°C)	77.0°F (25.0°C)	-1.2°F (-0.7°C)	29th Coolest	Coolest since: 2004	1967
	75.8°F (24.3°C)	77.0°F (25.0°C)	-1.2°F (-0.7°C)	100th Warmest	Warmest since: 2007	1936
	Ties: 1982
Jun–Aug 2008 3-Month	75.8°F (24.3°C)	75.9°F (24.4°C)	-0.1°F (-0.1°C)	56th Coolest	Coolest since: 2004	1915, 1927
	75.8°F (24.3°C)	75.9°F (24.4°C)	-0.1°F (-0.1°C)	73rd Warmest	Warmest since: 2007	1936
	Ties: 1897, 1898, 1939, 1940, 2017
May–Aug 2008 4-Month	72.5°F (22.5°C)	73.2°F (22.9°C)	-0.7°F (-0.4°C)	40th Coolest	Coolest since: 2004	1967
	72.5°F (22.5°C)	73.2°F (22.9°C)	-0.7°F (-0.4°C)	89th Warmest	Warmest since: 2007	1936
	Ties: 1906, 1963
Apr–Aug 2008 5-Month	68.8°F (20.4°C)	69.7°F (20.9°C)	-0.9°F (-0.5°C)	29th Coolest	Coolest since: 1997	1907
	68.8°F (20.4°C)	69.7°F (20.9°C)	-0.9°F (-0.5°C)	100th Warmest	Warmest since: 2007	2010
	Ties: 1972, 1973
Mar–Aug 2008 6-Month	64.8°F (18.2°C)	65.5°F (18.6°C)	-0.7°F (-0.4°C)	32nd Coolest	Coolest since: 1997	1904
	64.8°F (18.2°C)	65.5°F (18.6°C)	-0.7°F (-0.4°C)	97th Warmest	Warmest since: 2007	2012
	Ties: 1966, 1967, 1982
Feb–Aug 2008 7-Month	60.2°F (15.7°C)	61.1°F (16.2°C)	-0.9°F (-0.5°C)	33rd Coolest	Coolest since: 1996	1904
	60.2°F (15.7°C)	61.1°F (16.2°C)	-0.9°F (-0.5°C)	96th Warmest	Warmest since: 2007	2012
	Ties: 1900, 1966, 1967, 1996
Jan–Aug 2008 8-Month	56.7°F (13.7°C)	57.3°F (14.1°C)	-0.6°F (-0.4°C)	39th Coolest	Coolest since: 2003	1912
	56.7°F (13.7°C)	57.3°F (14.1°C)	-0.6°F (-0.4°C)	90th Warmest	Warmest since: 2007	2012
	Ties: 1948
Dec 2007–Aug 2008 9-Month	54.5°F (12.5°C)	54.8°F (12.7°C)	-0.3°F (-0.2°C)	44th Coolest	Coolest since: 2003	1904
	54.5°F (12.5°C)	54.8°F (12.7°C)	-0.3°F (-0.2°C)	84th Warmest	Warmest since: 2007	2012
	Ties: 1897, 1907, 1948, 1965, 1985, 1993
Nov 2007–Aug 2008 10-Month	53.6°F (12.0°C)	53.8°F (12.1°C)	-0.2°F (-0.1°C)	47th Coolest	Coolest since: 2003	1904
	53.6°F (12.0°C)	53.8°F (12.1°C)	-0.2°F (-0.1°C)	81st Warmest	Warmest since: 2007	2012
	Ties: 1900, 1937, 1947, 1956, 1973, 1980
Oct 2007–Aug 2008 11-Month	54.4°F (12.4°C)	54.1°F (12.3°C)	0.3°F (0.1°C)	68th Coolest	Coolest since: 2003	1904
	54.4°F (12.4°C)	54.1°F (12.3°C)	0.3°F (0.1°C)	60th Warmest	Warmest since: 2007	2012
	Ties: 1896, 1923, 1944, 1959
Sep 2007–Aug 2008 12-Month	55.9°F (13.3°C)	55.4°F (13.0°C)	0.5°F (0.3°C)	75th Coolest	Coolest since: 2003	1904
	55.9°F (13.3°C)	55.4°F (13.0°C)	0.5°F (0.3°C)	53rd Warmest	Warmest since: 2007	2012
	Ties: 1896, 1916, 1923, 1931, 1933, 1976
Mar 2007–Aug 2008 18-Month	60.1°F (15.6°C)	58.8°F (14.9°C)	1.3°F (0.7°C)	107th Coolest	Coolest since: 2004	1904
	60.1°F (15.6°C)	58.8°F (14.9°C)	1.3°F (0.7°C)	21st Warmest	Warmest since: 2007	2012
	Ties: 1991, 2018
Sep 2006–Aug 2008 24-Month	56.4°F (13.6°C)	55.4°F (13.0°C)	1.0°F (0.6°C)	100th Coolest	Coolest since: 2004	1979
	56.4°F (13.6°C)	55.4°F (13.0°C)	1.0°F (0.6°C)	27th Warmest	Warmest since: 2007	2017
	Ties: 1953, 1988, 2019
Sep 2005–Aug 2008 36-Month	56.9°F (13.8°C)	55.4°F (13.0°C)	1.5°F (0.8°C)	113th Coolest	Coolest since: 2005	1979
Sep 2005–Aug 2008 36-Month	56.9°F (13.8°C)	55.4°F (13.0°C)	1.5°F (0.8°C)	13th Warmest	Warmest since: 2007	2018
Sep 2004–Aug 2008 48-Month	57.0°F (13.9°C)	55.3°F (12.9°C)	1.7°F (1.0°C)	119th Coolest	Coolest since: 2007	1980
	57.0°F (13.9°C)	55.3°F (12.9°C)	1.7°F (1.0°C)	6th Warmest	Warmest since: 2007	2019
	Ties: 2007, 2012, 2013
Sep 2003–Aug 2008 60-Month	56.8°F (13.8°C)	55.3°F (12.9°C)	1.5°F (0.9°C)	117th Coolest	Coolest since: 2007	1906
	56.8°F (13.8°C)	55.3°F (12.9°C)	1.5°F (0.9°C)	7th Warmest	Warmest since: 2002	2020
	Ties: 1936, 2012

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on February 2, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings