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, April 1981

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
April 1981 1-Month	62.2°F (16.8°C)	55.3°F (12.9°C)	6.9°F (3.9°C)	127th Coolest	Coolest since: 1980	1907
April 1981 1-Month	62.2°F (16.8°C)	55.3°F (12.9°C)	6.9°F (3.9°C)	2nd Warmest	Warmest since: 1896	1896
Mar–Apr 1981 2-Month	53.4°F (11.9°C)	50.0°F (10.0°C)	3.4°F (1.9°C)	109th Coolest	Coolest since: 1980	1926, 1960
	53.4°F (11.9°C)	50.0°F (10.0°C)	3.4°F (1.9°C)	20th Warmest	Warmest since: 1977	2012
	Ties: 1986, 2004
Feb–Apr 1981 3-Month	47.9°F (8.8°C)	44.9°F (7.2°C)	3.0°F (1.6°C)	112th Coolest	Coolest since: 1980	1899
Feb–Apr 1981 3-Month	47.9°F (8.8°C)	44.9°F (7.2°C)	3.0°F (1.6°C)	17th Warmest	Warmest since: 1977	2012
Jan–Apr 1981 4-Month	43.4°F (6.3°C)	41.4°F (5.2°C)	2.0°F (1.1°C)	99th Coolest	Coolest since: 1980	1978
	43.4°F (6.3°C)	41.4°F (5.2°C)	2.0°F (1.1°C)	30th Warmest	Warmest since: 1976	2012
	Ties: 1911, 1919, 1945, 1987
Dec 1980–Apr 1981 5-Month	41.9°F (5.5°C)	40.1°F (4.5°C)	1.8°F (1.0°C)	100th Coolest	Coolest since: 1980	1978
Dec 1980–Apr 1981 5-Month	41.9°F (5.5°C)	40.1°F (4.5°C)	1.8°F (1.0°C)	28th Warmest	Warmest since: 1976	2012
Nov 1980–Apr 1981 6-Month	42.2°F (5.7°C)	40.8°F (4.9°C)	1.4°F (0.8°C)	95th Coolest	Coolest since: 1980	1912
	42.2°F (5.7°C)	40.8°F (4.9°C)	1.4°F (0.8°C)	33rd Warmest	Warmest since: 1976	2012
	Ties: 1990
Oct 1980–Apr 1981 7-Month	44.0°F (6.7°C)	43.2°F (6.2°C)	0.8°F (0.5°C)	84th Coolest	Coolest since: 1980	1899, 1978
	44.0°F (6.7°C)	43.2°F (6.2°C)	0.8°F (0.5°C)	44th Warmest	Warmest since: 1976	2012
	Ties: 1964, 1987, 2008
Sep 1980–Apr 1981 8-Month	47.4°F (8.6°C)	46.4°F (8.0°C)	1.0°F (0.6°C)	90th Coolest	Coolest since: 1980	1918
	47.4°F (8.6°C)	46.4°F (8.0°C)	1.0°F (0.6°C)	38th Warmest	Warmest since: 1976	2017
	Ties: 1923, 2007, 2019, 2021
Aug 1980–Apr 1981 9-Month	51.2°F (10.7°C)	49.8°F (9.9°C)	1.4°F (0.8°C)	102nd Coolest	Coolest since: 1980	1918
	51.2°F (10.7°C)	49.8°F (9.9°C)	1.4°F (0.8°C)	26th Warmest	Warmest since: 1976	2017
	Ties: 1925, 1935, 1938, 1957
Jul 1980–Apr 1981 10-Month	54.3°F (12.4°C)	52.6°F (11.4°C)	1.7°F (1.0°C)	110th Coolest	Coolest since: 1980	1918
	54.3°F (12.4°C)	52.6°F (11.4°C)	1.7°F (1.0°C)	18th Warmest	Warmest since: 1974	2012
	Ties: 2022
Jun 1980–Apr 1981 11-Month	56.1°F (13.4°C)	54.5°F (12.5°C)	1.6°F (0.9°C)	109th Coolest	Coolest since: 1980	1918
Jun 1980–Apr 1981 11-Month	56.1°F (13.4°C)	54.5°F (12.5°C)	1.6°F (0.9°C)	19th Warmest	Warmest since: 1974	2012, 2017
May 1980–Apr 1981 12-Month	56.8°F (13.8°C)	55.4°F (13.0°C)	1.4°F (0.8°C)	107th Coolest	Coolest since: 1980	1918
	56.8°F (13.8°C)	55.4°F (13.0°C)	1.4°F (0.8°C)	21st Warmest	Warmest since: 1976	2012, 2017
	Ties: 1919, 1921, 1922, 2011
Nov 1979–Apr 1981 18-Month	50.9°F (10.5°C)	50.5°F (10.3°C)	0.4°F (0.2°C)	76th Coolest	Coolest since: 1980	1979
	50.9°F (10.5°C)	50.5°F (10.3°C)	0.4°F (0.2°C)	51st Warmest	Warmest since: 1976	2017
	Ties: 1938, 1943, 1967, 1986, 1990, 1995, 2004
May 1979–Apr 1981 24-Month	55.4°F (13.0°C)	55.4°F (13.0°C)	0.0°F (0.0°C)	54th Coolest	Coolest since: 1980	1978
	55.4°F (13.0°C)	55.4°F (13.0°C)	0.0°F (0.0°C)	73rd Warmest	Warmest since: 1976	2017
	Ties: 1897, 1909, 1916, 1947, 1965
May 1978–Apr 1981 36-Month	54.7°F (12.6°C)	55.3°F (12.9°C)	-0.6°F (-0.3°C)	22nd Coolest	Coolest since: 1980	1979
May 1978–Apr 1981 36-Month	54.7°F (12.6°C)	55.3°F (12.9°C)	-0.6°F (-0.3°C)	104th Warmest	Warmest since: 1976	2018
May 1977–Apr 1981 48-Month	54.4°F (12.4°C)	55.3°F (12.9°C)	-0.9°F (-0.5°C)	9th Coolest	Coolest since: 1980	1980
	54.4°F (12.4°C)	55.3°F (12.9°C)	-0.9°F (-0.5°C)	116th Warmest	Warmest since: 1977	2019
	Ties: 1918, 1982
May 1976–Apr 1981 60-Month	54.0°F (12.2°C)	55.4°F (13.0°C)	-1.4°F (-0.8°C)	1st Coolest	Coolest since: 1980	1980, 1981
	54.0°F (12.2°C)	55.4°F (13.0°C)	-1.4°F (-0.8°C)	123rd Warmest	Warmest since: 1980	2020
	Ties: 1980

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on January 29, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings