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, January 1991

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2023)	Warmest/Coolest Since	Record
January 1991 1-Month	21.1°F (-6.1°C)	23.8°F (-4.6°C)	-2.7°F (-1.5°C)	35th Coolest	Coolest since: 1985	1977
January 1991 1-Month	21.1°F (-6.1°C)	23.8°F (-4.6°C)	-2.7°F (-1.5°C)	95th Warmest	Warmest since: 1990	2006
Dec 1990–Jan 1991 2-Month	24.5°F (-4.2°C)	26.1°F (-3.3°C)	-1.6°F (-0.9°C)	38th Coolest	Coolest since: 1986	1918
	24.5°F (-4.2°C)	26.1°F (-3.3°C)	-1.6°F (-0.9°C)	91st Warmest	Warmest since: 1990	1932
	Ties: 1961
Nov 1990–Jan 1991 3-Month	31.8°F (-0.1°C)	30.8°F (-0.7°C)	1.0°F (0.6°C)	73rd Coolest	Coolest since: 1990	1977
	31.8°F (-0.1°C)	30.8°F (-0.7°C)	1.0°F (0.6°C)	56th Warmest	Warmest since: 1989	2002
	Ties: 1903, 1965
Oct 1990–Jan 1991 4-Month	37.0°F (2.8°C)	36.8°F (2.7°C)	0.2°F (0.1°C)	63rd Coolest	Coolest since: 1990	1977
	37.0°F (2.8°C)	36.8°F (2.7°C)	0.2°F (0.1°C)	66th Warmest	Warmest since: 1990	1932
	Ties: 1987, 1990
Sep 1990–Jan 1991 5-Month	43.2°F (6.2°C)	42.6°F (5.9°C)	0.6°F (0.3°C)	72nd Coolest	Coolest since: 1990	1977
	43.2°F (6.2°C)	42.6°F (5.9°C)	0.6°F (0.3°C)	57th Warmest	Warmest since: 1989	1932
	Ties: 1937, 1953, 2004
Aug 1990–Jan 1991 6-Month	48.2°F (9.0°C)	47.8°F (8.8°C)	0.4°F (0.2°C)	70th Coolest	Coolest since: 1990	1977
	48.2°F (9.0°C)	47.8°F (8.8°C)	0.4°F (0.2°C)	59th Warmest	Warmest since: 1989	1932
	Ties: 1988
Jul 1990–Jan 1991 7-Month	51.9°F (11.1°C)	51.8°F (11.0°C)	0.1°F (0.1°C)	55th Coolest	Coolest since: 1990	1977
	51.9°F (11.1°C)	51.8°F (11.0°C)	0.1°F (0.1°C)	74th Warmest	Warmest since: 1989	1932
	Ties: 1915, 1961, 1984, 1987, 2019
Jun 1990–Jan 1991 8-Month	54.4°F (12.4°C)	54.3°F (12.4°C)	0.1°F (0.0°C)	58th Coolest	Coolest since: 1990	1977
	54.4°F (12.4°C)	54.3°F (12.4°C)	0.1°F (0.0°C)	71st Warmest	Warmest since: 1989	1932
	Ties: 1965, 1966, 1967, 2004
May 1990–Jan 1991 9-Month	54.8°F (12.7°C)	55.2°F (12.9°C)	-0.4°F (-0.2°C)	47th Coolest	Coolest since: 1990	1918, 1977
	54.8°F (12.7°C)	55.2°F (12.9°C)	-0.4°F (-0.2°C)	82nd Warmest	Warmest since: 1989	1932
	Ties: 1938, 1967, 1985
Apr 1990–Jan 1991 10-Month	54.4°F (12.4°C)	54.8°F (12.7°C)	-0.4°F (-0.3°C)	46th Coolest	Coolest since: 1990	1918
	54.4°F (12.4°C)	54.8°F (12.7°C)	-0.4°F (-0.3°C)	83rd Warmest	Warmest since: 1989	1932
	Ties: 1928, 1975
Mar 1990–Jan 1991 11-Month	53.4°F (11.9°C)	53.4°F (11.9°C)	0.0°F (0.0°C)	61st Coolest	Coolest since: 1990	1918
	53.4°F (11.9°C)	53.4°F (11.9°C)	0.0°F (0.0°C)	68th Warmest	Warmest since: 1989	1932, 2013, 2017
	Ties: 1933, 1980
Feb 1990–Jan 1991 12-Month	51.9°F (11.1°C)	51.2°F (10.7°C)	0.7°F (0.4°C)	88th Coolest	Coolest since: 1990	1918
	51.9°F (11.1°C)	51.2°F (10.7°C)	0.7°F (0.4°C)	41st Warmest	Warmest since: 1989	1932
	Ties: 1928, 1933, 1949, 1956, 1960, 1995
Aug 1989–Jan 1991 18-Month	50.4°F (10.2°C)	50.1°F (10.1°C)	0.3°F (0.1°C)	77th Coolest	Coolest since: 1990	1905, 1918
	50.4°F (10.2°C)	50.1°F (10.1°C)	0.3°F (0.1°C)	51st Warmest	Warmest since: 1989	2017
	Ties: 2020
Feb 1989–Jan 1991 24-Month	51.0°F (10.6°C)	51.2°F (10.7°C)	-0.2°F (-0.1°C)	48th Coolest	Coolest since: 1986	1918
	51.0°F (10.6°C)	51.2°F (10.7°C)	-0.2°F (-0.1°C)	80th Warmest	Warmest since: 1990	1932
	Ties: 1899, 1902, 1973, 1974
Feb 1988–Jan 1991 36-Month	51.6°F (10.9°C)	51.2°F (10.7°C)	0.4°F (0.2°C)	79th Coolest	Coolest since: 1987	1905
	51.6°F (10.9°C)	51.2°F (10.7°C)	0.4°F (0.2°C)	48th Warmest	Warmest since: 1990	1933
	Ties: 1914, 1915, 1950, 1954, 1966, 2005
Feb 1987–Jan 1991 48-Month	52.1°F (11.2°C)	51.2°F (10.7°C)	0.9°F (0.5°C)	98th Coolest	Coolest since: 1988	1905
	52.1°F (11.2°C)	51.2°F (10.7°C)	0.9°F (0.5°C)	28th Warmest	Warmest since: 1990	1934
	Ties: 1937, 1950, 1992, 2005
Feb 1986–Jan 1991 60-Month	52.1°F (11.2°C)	51.2°F (10.7°C)	0.9°F (0.5°C)	104th Coolest	Coolest since: 1990	1906, 1907
	52.1°F (11.2°C)	51.2°F (10.7°C)	0.9°F (0.5°C)	21st Warmest	Warmest since: 1989	1935
	Ties: 1924, 1932, 1933, 1939, 1941, 1989

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2023, retrieved on March 22, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings