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 1981

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1981 1-Month	65.1°F (18.4°C)	67.4°F (19.7°C)	-2.3°F (-1.3°C)	23rd Coolest	Coolest since: 1976	1918
September 1981 1-Month	65.1°F (18.4°C)	67.4°F (19.7°C)	-2.3°F (-1.3°C)	106th Warmest	Warmest since: 1980	1925
Aug–Sep 1981 2-Month	68.8°F (20.4°C)	70.8°F (21.6°C)	-2.0°F (-1.2°C)	15th Coolest	Coolest since: 1976	1967
Aug–Sep 1981 2-Month	68.8°F (20.4°C)	70.8°F (21.6°C)	-2.0°F (-1.2°C)	114th Warmest	Warmest since: 1980	1936
Jul–Sep 1981 3-Month	71.2°F (21.8°C)	72.6°F (22.6°C)	-1.4°F (-0.8°C)	23rd Coolest	Coolest since: 1979	1967
	71.2°F (21.8°C)	72.6°F (22.6°C)	-1.4°F (-0.8°C)	106th Warmest	Warmest since: 1980	1936
	Ties: 1896, 1927
Jun–Sep 1981 4-Month	72.0°F (22.2°C)	72.6°F (22.6°C)	-0.6°F (-0.4°C)	45th Coolest	Coolest since: 1979	1967
	72.0°F (22.2°C)	72.6°F (22.6°C)	-0.6°F (-0.4°C)	84th Warmest	Warmest since: 1980	1936
	Ties: 1966, 2013
May–Sep 1981 5-Month	69.3°F (20.7°C)	70.7°F (21.5°C)	-1.4°F (-0.8°C)	18th Coolest	Coolest since: 1976	1924
	69.3°F (20.7°C)	70.7°F (21.5°C)	-1.4°F (-0.8°C)	111th Warmest	Warmest since: 1980	1936
	Ties: 1958, 1989
Apr–Sep 1981 6-Month	67.6°F (19.8°C)	67.7°F (19.8°C)	-0.1°F (0.0°C)	56th Coolest	Coolest since: 1979	1907
	67.6°F (19.8°C)	67.7°F (19.8°C)	-0.1°F (0.0°C)	73rd Warmest	Warmest since: 1980	2010
	Ties: 1898, 1912, 1916, 1973
Mar–Sep 1981 7-Month	63.9°F (17.7°C)	64.0°F (17.8°C)	-0.1°F (-0.1°C)	56th Coolest	Coolest since: 1979	1924
	63.9°F (17.7°C)	64.0°F (17.8°C)	-0.1°F (-0.1°C)	73rd Warmest	Warmest since: 1980	2012
	Ties: 1918, 1929, 1968
Feb–Sep 1981 8-Month	60.1°F (15.6°C)	60.0°F (15.6°C)	0.1°F (0.0°C)	67th Coolest	Coolest since: 1980	1904, 1924
	60.1°F (15.6°C)	60.0°F (15.6°C)	0.1°F (0.0°C)	62nd Warmest	Warmest since: 1977	2012
	Ties: 1927, 1943, 1945, 1956
Jan–Sep 1981 9-Month	56.3°F (13.5°C)	56.4°F (13.6°C)	-0.1°F (-0.1°C)	61st Coolest	Coolest since: 1980	1979
	56.3°F (13.5°C)	56.4°F (13.6°C)	-0.1°F (-0.1°C)	68th Warmest	Warmest since: 1977	2012
	Ties: 1974, 2009
Dec 1980–Sep 1981 10-Month	53.9°F (12.2°C)	53.9°F (12.2°C)	0.0°F (0.0°C)	68th Coolest	Coolest since: 1980	1904
	53.9°F (12.2°C)	53.9°F (12.2°C)	0.0°F (0.0°C)	60th Warmest	Warmest since: 1976	2012
	Ties: 1909, 1936, 1943, 1948, 1985
Nov 1980–Sep 1981 11-Month	52.8°F (11.6°C)	52.8°F (11.6°C)	0.0°F (0.0°C)	57th Coolest	Coolest since: 1980	1904
	52.8°F (11.6°C)	52.8°F (11.6°C)	0.0°F (0.0°C)	71st Warmest	Warmest since: 1976	2012
	Ties: 1903, 1916, 1936, 1975, 1985, 1989
Oct 1980–Sep 1981 12-Month	52.8°F (11.6°C)	53.1°F (11.7°C)	-0.3°F (-0.1°C)	49th Coolest	Coolest since: 1979	1904
	52.8°F (11.6°C)	53.1°F (11.7°C)	-0.3°F (-0.1°C)	79th Warmest	Warmest since: 1980	2012
	Ties: 1896, 1966
Apr 1980–Sep 1981 18-Month	58.2°F (14.6°C)	58.0°F (14.4°C)	0.2°F (0.2°C)	70th Coolest	Coolest since: 1980	1918
	58.2°F (14.6°C)	58.0°F (14.4°C)	0.2°F (0.2°C)	58th Warmest	Warmest since: 1976	2012
	Ties: 1974
Oct 1979–Sep 1981 24-Month	52.8°F (11.6°C)	53.0°F (11.7°C)	-0.2°F (-0.1°C)	45th Coolest	Coolest since: 1980	1979
	52.8°F (11.6°C)	53.0°F (11.7°C)	-0.2°F (-0.1°C)	82nd Warmest	Warmest since: 1976	2017
	Ties: 1937, 1958, 1964
Oct 1978–Sep 1981 36-Month	52.1°F (11.2°C)	53.1°F (11.7°C)	-1.0°F (-0.5°C)	9th Coolest	Coolest since: 1980	1979
	52.1°F (11.2°C)	53.1°F (11.7°C)	-1.0°F (-0.5°C)	117th Warmest	Warmest since: 1977	2018
	Ties: 1912, 1928, 1969, 1971, 2015
Oct 1977–Sep 1981 48-Month	51.6°F (10.9°C)	53.0°F (11.7°C)	-1.4°F (-0.8°C)	5th Coolest	Coolest since: 1980	1980
Oct 1977–Sep 1981 48-Month	51.6°F (10.9°C)	53.0°F (11.7°C)	-1.4°F (-0.8°C)	120th Warmest	Warmest since: 1978	2019
Oct 1976–Sep 1981 60-Month	51.6°F (10.9°C)	53.1°F (11.7°C)	-1.5°F (-0.8°C)	2nd Coolest	Coolest since: 1981	1982
Oct 1976–Sep 1981 60-Month	51.6°F (10.9°C)	53.1°F (11.7°C)	-1.5°F (-0.8°C)	122nd Warmest	Warmest since: 1980	2020

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