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 3. West

Average Temperature Rankings, April 1998

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Record Coolest
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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
April 1998 1-Month	52.1°F (11.2°C)	51.3°F (10.7°C)	0.8°F (0.5°C)	78th Coolest	Coolest since: 1997	2018
	52.1°F (11.2°C)	51.3°F (10.7°C)	0.8°F (0.5°C)	51st Warmest	Warmest since: 1994	2010
	Ties: 1932, 1965, 1978, 2002
Mar–Apr 1998 2-Month	45.6°F (7.6°C)	45.2°F (7.3°C)	0.4°F (0.3°C)	71st Coolest	Coolest since: 1997	1960
	45.6°F (7.6°C)	45.2°F (7.3°C)	0.4°F (0.3°C)	58th Warmest	Warmest since: 1995	2012
	Ties: 1936, 1995
Feb–Apr 1998 3-Month	43.5°F (6.4°C)	39.5°F (4.2°C)	4.0°F (2.2°C)	114th Coolest	Coolest since: 1997	1899
	43.5°F (6.4°C)	39.5°F (4.2°C)	4.0°F (2.2°C)	15th Warmest	Warmest since: 1991	2012
	Ties: 1954
Jan–Apr 1998 4-Month	40.0°F (4.4°C)	35.6°F (2.0°C)	4.4°F (2.4°C)	119th Coolest	Coolest since: 1997	1912
Jan–Apr 1998 4-Month	40.0°F (4.4°C)	35.6°F (2.0°C)	4.4°F (2.4°C)	10th Warmest	Warmest since: 1990	2012
Dec 1997–Apr 1998 5-Month	38.1°F (3.4°C)	34.2°F (1.2°C)	3.9°F (2.2°C)	120th Coolest	Coolest since: 1997	1978
	38.1°F (3.4°C)	34.2°F (1.2°C)	3.9°F (2.2°C)	8th Warmest	Warmest since: 1992	2012
	Ties: 2002
Nov 1997–Apr 1998 6-Month	38.1°F (3.4°C)	35.2°F (1.8°C)	2.9°F (1.6°C)	115th Coolest	Coolest since: 1997	1904, 1912, 1978
	38.1°F (3.4°C)	35.2°F (1.8°C)	2.9°F (1.6°C)	13th Warmest	Warmest since: 1991	2012
	Ties: 1919, 1991
Oct 1997–Apr 1998 7-Month	40.5°F (4.7°C)	37.9°F (3.3°C)	2.6°F (1.4°C)	113th Coolest	Coolest since: 1997	1912
Oct 1997–Apr 1998 7-Month	40.5°F (4.7°C)	37.9°F (3.3°C)	2.6°F (1.4°C)	15th Warmest	Warmest since: 1976	2012
Sep 1997–Apr 1998 8-Month	43.8°F (6.6°C)	41.5°F (5.3°C)	2.3°F (1.3°C)	113th Coolest	Coolest since: 1997	1904, 1978
Sep 1997–Apr 1998 8-Month	43.8°F (6.6°C)	41.5°F (5.3°C)	2.3°F (1.3°C)	15th Warmest	Warmest since: 1987	2017
Aug 1997–Apr 1998 9-Month	46.9°F (8.3°C)	45.0°F (7.2°C)	1.9°F (1.1°C)	112th Coolest	Coolest since: 1997	1978
	46.9°F (8.3°C)	45.0°F (7.2°C)	1.9°F (1.1°C)	16th Warmest	Warmest since: 1991	2017
	Ties: 1991, 2005
Jul 1997–Apr 1998 10-Month	49.7°F (9.8°C)	48.1°F (8.9°C)	1.6°F (0.9°C)	108th Coolest	Coolest since: 1997	1904
	49.7°F (9.8°C)	48.1°F (8.9°C)	1.6°F (0.9°C)	20th Warmest	Warmest since: 1992	2012
	Ties: 1919, 1991, 1992
Jun 1997–Apr 1998 11-Month	51.6°F (10.9°C)	50.3°F (10.2°C)	1.3°F (0.7°C)	103rd Coolest	Coolest since: 1997	1904
	51.6°F (10.9°C)	50.3°F (10.2°C)	1.3°F (0.7°C)	25th Warmest	Warmest since: 1992	2017
	Ties: 1937, 2020
May 1997–Apr 1998 12-Month	52.1°F (11.2°C)	51.3°F (10.7°C)	0.8°F (0.5°C)	92nd Coolest	Coolest since: 1997	1918
	52.1°F (11.2°C)	51.3°F (10.7°C)	0.8°F (0.5°C)	36th Warmest	Warmest since: 1992	2017
	Ties: 1953, 1974, 2007
Nov 1996–Apr 1998 18-Month	46.0°F (7.8°C)	45.9°F (7.7°C)	0.1°F (0.1°C)	63rd Coolest	Coolest since: 1997	1979
	46.0°F (7.8°C)	45.9°F (7.7°C)	0.1°F (0.1°C)	64th Warmest	Warmest since: 1995	2017
	Ties: 1901, 2019
May 1996–Apr 1998 24-Month	51.0°F (10.6°C)	51.2°F (10.7°C)	-0.2°F (-0.1°C)	43rd Coolest	Coolest since: 1997	1905
	51.0°F (10.6°C)	51.2°F (10.7°C)	-0.2°F (-0.1°C)	84th Warmest	Warmest since: 1995	2017
	Ties: 1947, 1977, 1986, 1995
May 1995–Apr 1998 36-Month	50.6°F (10.3°C)	51.2°F (10.7°C)	-0.6°F (-0.4°C)	23rd Coolest	Coolest since: 1997	1979
	50.6°F (10.3°C)	51.2°F (10.7°C)	-0.6°F (-0.4°C)	103rd Warmest	Warmest since: 1997	2018
	Ties: 1899, 1900, 1901, 1927, 1953, 1961, 1977, 1996, 1997
May 1994–Apr 1998 48-Month	50.9°F (10.5°C)	51.2°F (10.7°C)	-0.3°F (-0.2°C)	36th Coolest	Coolest since: 1997	1980
	50.9°F (10.5°C)	51.2°F (10.7°C)	-0.3°F (-0.2°C)	89th Warmest	Warmest since: 1995	1935
	Ties: 1901, 1926, 1930, 1953, 1977, 1985
May 1993–Apr 1998 60-Month	50.8°F (10.4°C)	51.2°F (10.7°C)	-0.4°F (-0.3°C)	28th Coolest	Coolest since: 1997	1906, 1979
	50.8°F (10.4°C)	51.2°F (10.7°C)	-0.4°F (-0.3°C)	96th Warmest	Warmest since: 1996	1935
	Ties: 1902, 1913, 1928, 1964, 1965, 1986

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2023, retrieved on March 31, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings