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, April 1999

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Record Coolest
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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2023)	Warmest/Coolest Since	Record
April 1999 1-Month	55.4°F (13.0°C)	52.8°F (11.6°C)	2.6°F (1.4°C)	99th Coolest	Coolest since: 1998	1907
	55.4°F (13.0°C)	52.8°F (11.6°C)	2.6°F (1.4°C)	31st Warmest	Warmest since: 1991	2010
	Ties: 2003, 2004
Mar–Apr 1999 2-Month	47.6°F (8.7°C)	47.2°F (8.4°C)	0.4°F (0.3°C)	68th Coolest	Coolest since: 1997	1926
Mar–Apr 1999 2-Month	47.6°F (8.7°C)	47.2°F (8.4°C)	0.4°F (0.3°C)	62nd Warmest	Warmest since: 1998	2012
Feb–Apr 1999 3-Month	44.6°F (7.0°C)	42.0°F (5.6°C)	2.6°F (1.4°C)	105th Coolest	Coolest since: 1997	1978
	44.6°F (7.0°C)	42.0°F (5.6°C)	2.6°F (1.4°C)	25th Warmest	Warmest since: 1998	2012
	Ties: 1973, 1981
Jan–Apr 1999 4-Month	40.6°F (4.8°C)	38.4°F (3.6°C)	2.2°F (1.2°C)	98th Coolest	Coolest since: 1997	1978
	40.6°F (4.8°C)	38.4°F (3.6°C)	2.2°F (1.2°C)	32nd Warmest	Warmest since: 1998	2012
	Ties: 1955
Dec 1998–Apr 1999 5-Month	39.8°F (4.3°C)	37.1°F (2.8°C)	2.7°F (1.5°C)	111th Coolest	Coolest since: 1997	1978
	39.8°F (4.3°C)	37.1°F (2.8°C)	2.7°F (1.5°C)	18th Warmest	Warmest since: 1998	2012
	Ties: 1991
Nov 1998–Apr 1999 6-Month	40.9°F (4.9°C)	37.9°F (3.3°C)	3.0°F (1.6°C)	116th Coolest	Coolest since: 1998	1978
	40.9°F (4.9°C)	37.9°F (3.3°C)	3.0°F (1.6°C)	13th Warmest	Warmest since: 1995	2012
	Ties: 1995, 2005
Oct 1998–Apr 1999 7-Month	43.3°F (6.3°C)	40.5°F (4.7°C)	2.8°F (1.6°C)	117th Coolest	Coolest since: 1998	1978
Oct 1998–Apr 1999 7-Month	43.3°F (6.3°C)	40.5°F (4.7°C)	2.8°F (1.6°C)	12th Warmest	Warmest since: 1976	2012
Sep 1998–Apr 1999 8-Month	46.9°F (8.3°C)	43.8°F (6.6°C)	3.1°F (1.7°C)	122nd Coolest	Coolest since: 1998	1904, 1918, 1978
	46.9°F (8.3°C)	43.8°F (6.6°C)	3.1°F (1.7°C)	7th Warmest	Warmest since: 1932	2017
	Ties: 2002
Aug 1998–Apr 1999 9-Month	50.1°F (10.1°C)	47.2°F (8.4°C)	2.9°F (1.7°C)	122nd Coolest	Coolest since: 1998	1918
Aug 1998–Apr 1999 9-Month	50.1°F (10.1°C)	47.2°F (8.4°C)	2.9°F (1.7°C)	7th Warmest	Warmest since: 1932	2017
Jul 1998–Apr 1999 10-Month	52.7°F (11.5°C)	50.1°F (10.1°C)	2.6°F (1.4°C)	123rd Coolest	Coolest since: 1998	1918
	52.7°F (11.5°C)	50.1°F (10.1°C)	2.6°F (1.4°C)	6th Warmest	Warmest since: 1954	2012
	Ties: 1954, 2000
Jun 1998–Apr 1999 11-Month	54.5°F (12.5°C)	52.2°F (11.2°C)	2.3°F (1.3°C)	121st Coolest	Coolest since: 1998	1904, 1918
	54.5°F (12.5°C)	52.2°F (11.2°C)	2.3°F (1.3°C)	8th Warmest	Warmest since: 1955	2012
	Ties: 2000
May 1998–Apr 1999 12-Month	55.7°F (13.2°C)	53.1°F (11.7°C)	2.6°F (1.5°C)	123rd Coolest	Coolest since: 1998	1918
	55.7°F (13.2°C)	53.1°F (11.7°C)	2.6°F (1.5°C)	6th Warmest	Warmest since: 1992	2012
	Ties: 1992
Nov 1997–Apr 1999 18-Month	50.7°F (10.4°C)	48.0°F (8.9°C)	2.7°F (1.5°C)	124th Coolest	Coolest since: 1998	1905, 1979
	50.7°F (10.4°C)	48.0°F (8.9°C)	2.7°F (1.5°C)	4th Warmest	Warmest since: 1992	2017
	Ties: 2006, 2012
May 1997–Apr 1999 24-Month	54.7°F (12.6°C)	53.1°F (11.7°C)	1.6°F (0.9°C)	112th Coolest	Coolest since: 1998	1978
May 1997–Apr 1999 24-Month	54.7°F (12.6°C)	53.1°F (11.7°C)	1.6°F (0.9°C)	16th Warmest	Warmest since: 1992	2017
May 1996–Apr 1999 36-Month	54.0°F (12.2°C)	53.0°F (11.7°C)	1.0°F (0.5°C)	97th Coolest	Coolest since: 1998	1979
	54.0°F (12.2°C)	53.0°F (11.7°C)	1.0°F (0.5°C)	30th Warmest	Warmest since: 1992	2018
	Ties: 1922
May 1995–Apr 1999 48-Month	53.5°F (11.9°C)	53.0°F (11.7°C)	0.5°F (0.2°C)	76th Coolest	Coolest since: 1998	1980
	53.5°F (11.9°C)	53.0°F (11.7°C)	0.5°F (0.2°C)	50th Warmest	Warmest since: 1995	2019
	Ties: 1925, 1936, 1941, 1943, 1950, 2015
May 1994–Apr 1999 60-Month	53.6°F (12.0°C)	53.0°F (11.7°C)	0.6°F (0.3°C)	75th Coolest	Coolest since: 1998	1981
	53.6°F (12.0°C)	53.0°F (11.7°C)	0.6°F (0.3°C)	50th Warmest	Warmest since: 1995	2020
	Ties: 1943, 1954

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published May 2023, retrieved on June 1, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings