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 1901

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1901 1-Month	67.3°F (19.6°C)	67.4°F (19.7°C)	-0.1°F (-0.1°C)	59th Coolest	Coolest since: 1899	1918
	67.3°F (19.6°C)	67.4°F (19.7°C)	-0.1°F (-0.1°C)	70th Warmest	Warmest since: 1900	1925
	Ties: 1997
Aug–Sep 1901 2-Month	71.1°F (21.7°C)	70.8°F (21.6°C)	0.3°F (0.1°C)	70th Coolest	Coolest since: 1896	1967
Aug–Sep 1901 2-Month	71.1°F (21.7°C)	70.8°F (21.6°C)	0.3°F (0.1°C)	59th Warmest	Warmest since: 1900	1936
Jul–Sep 1901 3-Month	74.6°F (23.7°C)	72.7°F (22.6°C)	1.9°F (1.1°C)	111th Coolest	Coolest since: 1899	1967
	74.6°F (23.7°C)	72.7°F (22.6°C)	1.9°F (1.1°C)	18th Warmest	Warmest since: 1900	1936
	Ties: 2016
Jun–Sep 1901 4-Month	74.7°F (23.7°C)	72.6°F (22.6°C)	2.1°F (1.1°C)	112th Coolest	Coolest since: 1900	1967
Jun–Sep 1901 4-Month	74.7°F (23.7°C)	72.6°F (22.6°C)	2.1°F (1.1°C)	17th Warmest	Warmest to Date	1936
May–Sep 1901 5-Month	72.1°F (22.3°C)	70.8°F (21.6°C)	1.3°F (0.7°C)	101st Coolest	Coolest since: 1900	1924
	72.1°F (22.3°C)	70.8°F (21.6°C)	1.3°F (0.7°C)	28th Warmest	Warmest since: 1900	1936
	Ties: 1900, 1922, 1939, 1955
Apr–Sep 1901 6-Month	68.2°F (20.1°C)	67.7°F (19.8°C)	0.5°F (0.3°C)	74th Coolest	Coolest since: 1898	1907
Apr–Sep 1901 6-Month	68.2°F (20.1°C)	67.7°F (19.8°C)	0.5°F (0.3°C)	55th Warmest	Warmest since: 1900	2010
Mar–Sep 1901 7-Month	64.2°F (17.9°C)	64.0°F (17.8°C)	0.2°F (0.1°C)	66th Coolest	Coolest since: 1899	1924
	64.2°F (17.9°C)	64.0°F (17.8°C)	0.2°F (0.1°C)	63rd Warmest	Warmest since: 1900	2012
	Ties: 2009
Feb–Sep 1901 8-Month	59.3°F (15.2°C)	59.9°F (15.5°C)	-0.6°F (-0.3°C)	46th Coolest	Coolest since: 1899	1904, 1924
	59.3°F (15.2°C)	59.9°F (15.5°C)	-0.6°F (-0.3°C)	83rd Warmest	Warmest since: 1900	2012
	Ties: 1909, 1965, 1994, 2003
Jan–Sep 1901 9-Month	56.1°F (13.4°C)	56.3°F (13.5°C)	-0.2°F (-0.1°C)	55th Coolest	Coolest since: 1899	1979
	56.1°F (13.4°C)	56.3°F (13.5°C)	-0.2°F (-0.1°C)	74th Warmest	Warmest since: 1900	2012
	Ties: 1906, 1909, 1989
Dec 1900–Sep 1901 10-Month	53.8°F (12.1°C)	53.9°F (12.2°C)	-0.1°F (-0.1°C)	58th Coolest	Coolest since: 1900	1904
	53.8°F (12.1°C)	53.9°F (12.2°C)	-0.1°F (-0.1°C)	70th Warmest	Warmest since: 1898	2012
	Ties: 1937, 1956, 1980, 1989
Nov 1900–Sep 1901 11-Month	52.7°F (11.5°C)	52.9°F (11.6°C)	-0.2°F (-0.1°C)	51st Coolest	Coolest since: 1899	1904
	52.7°F (11.5°C)	52.9°F (11.6°C)	-0.2°F (-0.1°C)	77th Warmest	Warmest since: 1900	2012
	Ties: 1947, 1950, 1965, 1980, 2008
Oct 1900–Sep 1901 12-Month	53.4°F (11.9°C)	53.1°F (11.7°C)	0.3°F (0.2°C)	70th Coolest	Coolest since: 1899	1904
	53.4°F (11.9°C)	53.1°F (11.7°C)	0.3°F (0.2°C)	58th Warmest	Warmest since: 1900	2012
	Ties: 1946, 1985, 2008
Apr 1900–Sep 1901 18-Month	58.6°F (14.8°C)	58.0°F (14.4°C)	0.6°F (0.4°C)	87th Coolest	Coolest since: 1900	1918
	58.6°F (14.8°C)	58.0°F (14.4°C)	0.6°F (0.4°C)	41st Warmest	Warmest to Date	2012
	Ties: 1941, 1957
Oct 1899–Sep 1901 24-Month	53.4°F (11.9°C)	53.0°F (11.7°C)	0.4°F (0.2°C)	80th Coolest	Coolest since: 1900	1979
	53.4°F (11.9°C)	53.0°F (11.7°C)	0.4°F (0.2°C)	47th Warmest	Warmest to Date	2017
	Ties: 1936, 1957, 1974, 1976, 1995
Oct 1898–Sep 1901 36-Month	52.6°F (11.4°C)	53.1°F (11.7°C)	-0.5°F (-0.3°C)	30th Coolest	Coolest since: 1899	1979
	52.6°F (11.4°C)	53.1°F (11.7°C)	-0.5°F (-0.3°C)	96th Warmest	Warmest since: 1900	2018
	Ties: 1902, 1908, 1967
Oct 1897–Sep 1901 48-Month	52.9°F (11.6°C)	53.0°F (11.7°C)	-0.1°F (-0.1°C)	45th Coolest	Coolest since: 1900	1980
	52.9°F (11.6°C)	53.0°F (11.7°C)	-0.1°F (-0.1°C)	80th Warmest	Warmest to Date	2019
	Ties: 1951, 1959, 1967, 1973, 1983
Oct 1896–Sep 1901 60-Month	52.8°F (11.6°C)	53.1°F (11.7°C)	-0.3°F (-0.1°C)	43rd Coolest	Coolest since: 1900	1982
	52.8°F (11.6°C)	53.1°F (11.7°C)	-0.3°F (-0.1°C)	81st Warmest	Warmest to Date	2020
	Ties: 1911, 1916

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on February 8, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings