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 1988

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
April 1988 1-Month	55.7°F (13.2°C)	55.3°F (12.9°C)	0.4°F (0.3°C)	68th Coolest	Coolest since: 1987	1907
	55.7°F (13.2°C)	55.3°F (12.9°C)	0.4°F (0.3°C)	61st Warmest	Warmest since: 1987	1896
	Ties: 1972, 1987
Mar–Apr 1988 2-Month	50.4°F (10.2°C)	50.0°F (10.0°C)	0.4°F (0.2°C)	71st Coolest	Coolest since: 1984	1926, 1960
	50.4°F (10.2°C)	50.0°F (10.0°C)	0.4°F (0.2°C)	58th Warmest	Warmest since: 1987	2012
	Ties: 1936, 1957, 1989, 2002
Feb–Apr 1988 3-Month	44.2°F (6.8°C)	44.9°F (7.2°C)	-0.7°F (-0.4°C)	52nd Coolest	Coolest since: 1984	1899
Feb–Apr 1988 3-Month	44.2°F (6.8°C)	44.9°F (7.2°C)	-0.7°F (-0.4°C)	77th Warmest	Warmest since: 1987	2012
Jan–Apr 1988 4-Month	40.4°F (4.7°C)	41.4°F (5.2°C)	-1.0°F (-0.5°C)	41st Coolest	Coolest since: 1985	1978
	40.4°F (4.7°C)	41.4°F (5.2°C)	-1.0°F (-0.5°C)	88th Warmest	Warmest since: 1987	2012
	Ties: 1913, 1916
Dec 1987–Apr 1988 5-Month	39.9°F (4.4°C)	40.1°F (4.5°C)	-0.2°F (-0.1°C)	52nd Coolest	Coolest since: 1984	1978
	39.9°F (4.4°C)	40.1°F (4.5°C)	-0.2°F (-0.1°C)	76th Warmest	Warmest since: 1987	2012
	Ties: 1903, 1924, 2011
Nov 1987–Apr 1988 6-Month	41.4°F (5.2°C)	40.8°F (4.9°C)	0.6°F (0.3°C)	73rd Coolest	Coolest since: 1985	1912
Nov 1987–Apr 1988 6-Month	41.4°F (5.2°C)	40.8°F (4.9°C)	0.6°F (0.3°C)	55th Warmest	Warmest since: 1987	2012
Oct 1987–Apr 1988 7-Month	43.0°F (6.1°C)	43.3°F (6.3°C)	-0.3°F (-0.2°C)	46th Coolest	Coolest since: 1984	1899, 1978
	43.0°F (6.1°C)	43.3°F (6.3°C)	-0.3°F (-0.2°C)	82nd Warmest	Warmest since: 1987	2012
	Ties: 1897, 1901, 1917, 1959, 1975
Sep 1987–Apr 1988 8-Month	46.3°F (7.9°C)	46.5°F (8.1°C)	-0.2°F (-0.2°C)	47th Coolest	Coolest since: 1984	1918
	46.3°F (7.9°C)	46.5°F (8.1°C)	-0.2°F (-0.2°C)	81st Warmest	Warmest since: 1987	2017
	Ties: 1937, 1952, 1961, 1971
Aug 1987–Apr 1988 9-Month	49.8°F (9.9°C)	49.8°F (9.9°C)	0.0°F (0.0°C)	59th Coolest	Coolest since: 1984	1918
	49.8°F (9.9°C)	49.8°F (9.9°C)	0.0°F (0.0°C)	69th Warmest	Warmest since: 1987	2017
	Ties: 1903
Jul 1987–Apr 1988 10-Month	52.6°F (11.4°C)	52.5°F (11.4°C)	0.1°F (0.0°C)	55th Coolest	Coolest since: 1985	1918
	52.6°F (11.4°C)	52.5°F (11.4°C)	0.1°F (0.0°C)	73rd Warmest	Warmest since: 1987	2012
	Ties: 1903, 1985, 2009, 2018
Jun 1987–Apr 1988 11-Month	54.8°F (12.7°C)	54.5°F (12.5°C)	0.3°F (0.2°C)	69th Coolest	Coolest since: 1986	1918
	54.8°F (12.7°C)	54.5°F (12.5°C)	0.3°F (0.2°C)	59th Warmest	Warmest since: 1987	2012, 2017
	Ties: 1910, 1949, 1964, 1985, 1986, 1990
May 1987–Apr 1988 12-Month	56.2°F (13.4°C)	55.4°F (13.0°C)	0.8°F (0.4°C)	87th Coolest	Coolest since: 1986	1918
May 1987–Apr 1988 12-Month	56.2°F (13.4°C)	55.4°F (13.0°C)	0.8°F (0.4°C)	41st Warmest	Warmest since: 1987	2012, 2017
Nov 1986–Apr 1988 18-Month	51.4°F (10.8°C)	50.6°F (10.3°C)	0.8°F (0.5°C)	93rd Coolest	Coolest since: 1986	1979
	51.4°F (10.8°C)	50.6°F (10.3°C)	0.8°F (0.5°C)	34th Warmest	Warmest since: 1987	2017
	Ties: 1974
May 1986–Apr 1988 24-Month	56.3°F (13.5°C)	55.4°F (13.0°C)	0.9°F (0.5°C)	99th Coolest	Coolest since: 1987	1978
	56.3°F (13.5°C)	55.4°F (13.0°C)	0.9°F (0.5°C)	28th Warmest	Warmest since: 1956	2017
	Ties: 1934, 1943, 1956, 2001
May 1985–Apr 1988 36-Month	56.1°F (13.4°C)	55.3°F (12.9°C)	0.8°F (0.5°C)	95th Coolest	Coolest since: 1987	1979
	56.1°F (13.4°C)	55.3°F (12.9°C)	0.8°F (0.5°C)	31st Warmest	Warmest since: 1957	2018
	Ties: 1921, 1943, 2005
May 1984–Apr 1988 48-Month	55.9°F (13.3°C)	55.3°F (12.9°C)	0.6°F (0.4°C)	84th Coolest	Coolest since: 1987	1980
	55.9°F (13.3°C)	55.3°F (12.9°C)	0.6°F (0.4°C)	41st Warmest	Warmest since: 1957	2019
	Ties: 1925, 1936, 1941, 1944, 2010, 2016
May 1983–Apr 1988 60-Month	55.7°F (13.2°C)	55.4°F (13.0°C)	0.3°F (0.2°C)	71st Coolest	Coolest since: 1987	1980, 1981
May 1983–Apr 1988 60-Month	55.7°F (13.2°C)	55.4°F (13.0°C)	0.3°F (0.2°C)	53rd Warmest	Warmest since: 1976	2020

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on February 7, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings