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 1900

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1900 1-Month	69.8°F (21.0°C)	67.4°F (19.7°C)	2.4°F (1.3°C)	96th Coolest	Coolest since: 1899	1918
	69.8°F (21.0°C)	67.4°F (19.7°C)	2.4°F (1.3°C)	33rd Warmest	Warmest since: 1898	1925
	Ties: 1898
Aug–Sep 1900 2-Month	74.4°F (23.6°C)	70.8°F (21.6°C)	3.6°F (2.0°C)	125th Coolest	Coolest since: 1899	1967
Aug–Sep 1900 2-Month	74.4°F (23.6°C)	70.8°F (21.6°C)	3.6°F (2.0°C)	4th Warmest	Warmest to Date	1936
Jul–Sep 1900 3-Month	74.8°F (23.8°C)	72.6°F (22.6°C)	2.2°F (1.2°C)	113th Coolest	Coolest since: 1899	1967
Jul–Sep 1900 3-Month	74.8°F (23.8°C)	72.6°F (22.6°C)	2.2°F (1.2°C)	16th Warmest	Warmest to Date	1936
Jun–Sep 1900 4-Month	73.9°F (23.3°C)	72.6°F (22.6°C)	1.3°F (0.7°C)	99th Coolest	Coolest since: 1899	1967
	73.9°F (23.3°C)	72.6°F (22.6°C)	1.3°F (0.7°C)	30th Warmest	Warmest to Date	1936
	Ties: 1959, 1987, 2019, 2021
May–Sep 1900 5-Month	72.1°F (22.3°C)	70.7°F (21.5°C)	1.4°F (0.8°C)	101st Coolest	Coolest since: 1899	1924
	72.1°F (22.3°C)	70.7°F (21.5°C)	1.4°F (0.8°C)	28th Warmest	Warmest to Date	1936
	Ties: 1901, 1922, 1939, 1955
Apr–Sep 1900 6-Month	69.0°F (20.6°C)	67.7°F (19.8°C)	1.3°F (0.8°C)	95th Coolest	Coolest since: 1899	1907
	69.0°F (20.6°C)	67.7°F (19.8°C)	1.3°F (0.8°C)	34th Warmest	Warmest since: 1896	2010
	Ties: 1964
Mar–Sep 1900 7-Month	64.4°F (18.0°C)	64.0°F (17.8°C)	0.4°F (0.2°C)	75th Coolest	Coolest since: 1899	1924
	64.4°F (18.0°C)	64.0°F (17.8°C)	0.4°F (0.2°C)	54th Warmest	Warmest since: 1896	2012
	Ties: 1896, 1970, 2000
Feb–Sep 1900 8-Month	59.6°F (15.3°C)	60.0°F (15.6°C)	-0.4°F (-0.3°C)	54th Coolest	Coolest since: 1899	1904, 1924
	59.6°F (15.3°C)	60.0°F (15.6°C)	-0.4°F (-0.3°C)	75th Warmest	Warmest since: 1898	2012
	Ties: 1972, 1974
Jan–Sep 1900 9-Month	56.5°F (13.6°C)	56.4°F (13.6°C)	0.1°F (0.0°C)	67th Coolest	Coolest since: 1899	1979
Jan–Sep 1900 9-Month	56.5°F (13.6°C)	56.4°F (13.6°C)	0.1°F (0.0°C)	62nd Warmest	Warmest since: 1898	2012
Dec 1899–Sep 1900 10-Month	53.7°F (12.1°C)	53.9°F (12.2°C)	-0.2°F (-0.1°C)	53rd Coolest	Coolest since: 1899	1904
	53.7°F (12.1°C)	53.9°F (12.2°C)	-0.2°F (-0.1°C)	75th Warmest	Warmest since: 1898	2012
	Ties: 1906, 1927, 1975, 2009
Nov 1899–Sep 1900 11-Month	53.0°F (11.7°C)	52.8°F (11.6°C)	0.2°F (0.1°C)	67th Coolest	Coolest since: 1899	1904
	53.0°F (11.7°C)	52.8°F (11.6°C)	0.2°F (0.1°C)	61st Warmest	Warmest since: 1898	2012
	Ties: 1909
Oct 1899–Sep 1900 12-Month	53.5°F (11.9°C)	53.1°F (11.7°C)	0.4°F (0.2°C)	74th Coolest	Coolest since: 1899	1904
	53.5°F (11.9°C)	53.1°F (11.7°C)	0.4°F (0.2°C)	54th Warmest	Warmest since: 1898	2012
	Ties: 1930, 1959, 1974
Apr 1899–Sep 1900 18-Month	58.4°F (14.7°C)	57.9°F (14.4°C)	0.5°F (0.3°C)	78th Coolest	Coolest since: 1899	1918
	58.4°F (14.7°C)	57.9°F (14.4°C)	0.5°F (0.3°C)	50th Warmest	Warmest to Date	2012
	Ties: 1923, 1944, 1976
Oct 1898–Sep 1900 24-Month	52.2°F (11.2°C)	53.1°F (11.7°C)	-0.9°F (-0.5°C)	20th Coolest	Coolest since: 1900	1979
	52.2°F (11.2°C)	53.1°F (11.7°C)	-0.9°F (-0.5°C)	107th Warmest	Warmest since: 1899	2017
	Ties: 1902, 1913, 1951, 1963
Oct 1897–Sep 1900 36-Month	52.7°F (11.5°C)	53.0°F (11.7°C)	-0.3°F (-0.2°C)	34th Coolest	Coolest since: 1899	1979
	52.7°F (11.5°C)	53.0°F (11.7°C)	-0.3°F (-0.2°C)	92nd Warmest	Warmest since: 1898	2018
	Ties: 1913, 1952, 1958, 1964, 1965, 1972
Oct 1896–Sep 1900 48-Month	52.6°F (11.4°C)	53.0°F (11.7°C)	-0.4°F (-0.3°C)	27th Coolest	Coolest since: 1899	1980
	52.6°F (11.4°C)	53.0°F (11.7°C)	-0.4°F (-0.3°C)	98th Warmest	Warmest to Date	2019
	Ties: 1910, 1913, 1926, 1964, 1972, 1997
Oct 1895–Sep 1900 60-Month	52.6°F (11.4°C)	53.0°F (11.7°C)	-0.4°F (-0.3°C)	27th Coolest	Coolest since: 1900	1982
	52.6°F (11.4°C)	53.0°F (11.7°C)	-0.4°F (-0.3°C)	97th Warmest	Warmest to Date	2020
	Ties: 1909, 1910, 1927, 1961, 1965, 1984, 1997

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on January 28, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings