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 2020

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
January 2020 1-Month	29.2°F (-1.6°C)	23.8°F (-4.6°C)	5.4°F (3.0°C)	110th Coolest	Coolest since: 2019	1977
January 2020 1-Month	29.2°F (-1.6°C)	23.8°F (-4.6°C)	5.4°F (3.0°C)	19th Warmest	Warmest since: 2017	2006
Dec 2019–Jan 2020 2-Month	32.1°F (0.1°C)	26.1°F (-3.3°C)	6.0°F (3.4°C)	120th Coolest	Coolest since: 2019	1918
Dec 2019–Jan 2020 2-Month	32.1°F (0.1°C)	26.1°F (-3.3°C)	6.0°F (3.4°C)	8th Warmest	Warmest since: 2016	1932
Nov 2019–Jan 2020 3-Month	33.4°F (0.8°C)	30.8°F (-0.7°C)	2.6°F (1.5°C)	99th Coolest	Coolest since: 2019	1977
	33.4°F (0.8°C)	30.8°F (-0.7°C)	2.6°F (1.5°C)	29th Warmest	Warmest since: 2017	2002
	Ties: 1954, 1988
Oct 2019–Jan 2020 4-Month	37.9°F (3.3°C)	36.7°F (2.6°C)	1.2°F (0.7°C)	80th Coolest	Coolest since: 2019	1977
	37.9°F (3.3°C)	36.7°F (2.6°C)	1.2°F (0.7°C)	48th Warmest	Warmest since: 2017	1932
	Ties: 1909, 1949
Sep 2019–Jan 2020 5-Month	44.6°F (7.0°C)	42.6°F (5.9°C)	2.0°F (1.1°C)	102nd Coolest	Coolest since: 2019	1977
	44.6°F (7.0°C)	42.6°F (5.9°C)	2.0°F (1.1°C)	26th Warmest	Warmest since: 2017	1932
	Ties: 2008
Aug 2019–Jan 2020 6-Month	49.2°F (9.6°C)	47.8°F (8.8°C)	1.4°F (0.8°C)	98th Coolest	Coolest since: 2019	1977
	49.2°F (9.6°C)	47.8°F (8.8°C)	1.4°F (0.8°C)	30th Warmest	Warmest since: 2017	1932
	Ties: 1955, 1995
Jul 2019–Jan 2020 7-Month	53.3°F (11.8°C)	51.8°F (11.0°C)	1.5°F (0.8°C)	98th Coolest	Coolest since: 2019	1977
	53.3°F (11.8°C)	51.8°F (11.0°C)	1.5°F (0.8°C)	30th Warmest	Warmest since: 2017	1932
	Ties: 1948, 2007
Jun 2019–Jan 2020 8-Month	55.6°F (13.1°C)	54.3°F (12.4°C)	1.3°F (0.7°C)	96th Coolest	Coolest since: 2019	1977
	55.6°F (13.1°C)	54.3°F (12.4°C)	1.3°F (0.7°C)	32nd Warmest	Warmest since: 2017	1932
	Ties: 2007, 2021
May 2019–Jan 2020 9-Month	56.2°F (13.4°C)	55.2°F (12.9°C)	1.0°F (0.5°C)	93rd Coolest	Coolest since: 2018	1918, 1977
	56.2°F (13.4°C)	55.2°F (12.9°C)	1.0°F (0.5°C)	35th Warmest	Warmest since: 2019	1932
	Ties: 1960, 1981
Apr 2019–Jan 2020 10-Month	55.8°F (13.2°C)	54.8°F (12.7°C)	1.0°F (0.5°C)	95th Coolest	Coolest since: 2019	1918
	55.8°F (13.2°C)	54.8°F (12.7°C)	1.0°F (0.5°C)	33rd Warmest	Warmest since: 2017	1932
	Ties: 1919, 1949, 1972
Mar 2019–Jan 2020 11-Month	54.0°F (12.2°C)	53.3°F (11.8°C)	0.7°F (0.4°C)	84th Coolest	Coolest since: 2019	1918
	54.0°F (12.2°C)	53.3°F (11.8°C)	0.7°F (0.4°C)	44th Warmest	Warmest since: 2018	1932, 2013, 2017
	Ties: 1956, 1974
Feb 2019–Jan 2020 12-Month	51.6°F (10.9°C)	51.2°F (10.7°C)	0.4°F (0.2°C)	75th Coolest	Coolest since: 2015	1918
	51.6°F (10.9°C)	51.2°F (10.7°C)	0.4°F (0.2°C)	53rd Warmest	Warmest since: 2019	1932
	Ties: 1898, 1941
Aug 2018–Jan 2020 18-Month	50.4°F (10.2°C)	50.0°F (10.0°C)	0.4°F (0.2°C)	78th Coolest	Coolest since: 2015	1905, 1918
	50.4°F (10.2°C)	50.0°F (10.0°C)	0.4°F (0.2°C)	49th Warmest	Warmest since: 2019	2017
	Ties: 1975, 1991
Feb 2018–Jan 2020 24-Month	51.7°F (10.9°C)	51.2°F (10.7°C)	0.5°F (0.2°C)	83rd Coolest	Coolest since: 2016	1918
	51.7°F (10.9°C)	51.2°F (10.7°C)	0.5°F (0.2°C)	44th Warmest	Warmest since: 2019	1932
	Ties: 1975, 2005
Feb 2017–Jan 2020 36-Month	52.2°F (11.2°C)	51.2°F (10.7°C)	1.0°F (0.5°C)	103rd Coolest	Coolest since: 2017	1905
	52.2°F (11.2°C)	51.2°F (10.7°C)	1.0°F (0.5°C)	23rd Warmest	Warmest since: 2019	1933
	Ties: 1922, 1988, 1990, 2003
Feb 2016–Jan 2020 48-Month	52.8°F (11.6°C)	51.2°F (10.7°C)	1.6°F (0.9°C)	119th Coolest	Coolest since: 2018	1905
Feb 2016–Jan 2020 48-Month	52.8°F (11.6°C)	51.2°F (10.7°C)	1.6°F (0.9°C)	6th Warmest	Warmest since: 2019	1934
Feb 2015–Jan 2020 60-Month	52.7°F (11.5°C)	51.2°F (10.7°C)	1.5°F (0.8°C)	122nd Coolest	Coolest since: 2019	1906
	52.7°F (11.5°C)	51.2°F (10.7°C)	1.5°F (0.8°C)	2nd Warmest	Warmest since: 2003	1935
	Ties: 2002, 2003, 2021

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