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, February 2018

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
February 2018 1-Month	29.0°F (-1.7°C)	28.1°F (-2.2°C)	0.9°F (0.5°C)	79th Coolest	Coolest since: 2015	1936
	29.0°F (-1.7°C)	28.1°F (-2.2°C)	0.9°F (0.5°C)	50th Warmest	Warmest since: 2017	2017
	Ties: 1896
Jan–Feb 2018 2-Month	26.0°F (-3.3°C)	25.9°F (-3.4°C)	0.1°F (0.1°C)	61st Coolest	Coolest since: 2015	1979
	26.0°F (-3.3°C)	25.9°F (-3.4°C)	0.1°F (0.1°C)	68th Warmest	Warmest since: 2017	2017
	Ties: 1897, 1942
Dec 2017–Feb 2018 3-Month	27.1°F (-2.7°C)	26.8°F (-2.9°C)	0.3°F (0.2°C)	61st Coolest	Coolest since: 2015	1936
	27.1°F (-2.7°C)	26.8°F (-2.9°C)	0.3°F (0.2°C)	67th Warmest	Warmest since: 2017	1932
	Ties: 1972, 1973
Nov 2017–Feb 2018 4-Month	30.4°F (-0.9°C)	30.1°F (-1.1°C)	0.3°F (0.2°C)	62nd Coolest	Coolest since: 2015	1936
	30.4°F (-0.9°C)	30.1°F (-1.1°C)	0.3°F (0.2°C)	66th Warmest	Warmest since: 2017	1932
	Ties: 1900, 1926
Oct 2017–Feb 2018 5-Month	35.8°F (2.1°C)	35.0°F (1.7°C)	0.8°F (0.4°C)	82nd Coolest	Coolest since: 2015	1977
	35.8°F (2.1°C)	35.0°F (1.7°C)	0.8°F (0.4°C)	46th Warmest	Warmest since: 2017	1932
	Ties: 1922, 1949
Sep 2017–Feb 2018 6-Month	41.2°F (5.1°C)	40.2°F (4.6°C)	1.0°F (0.5°C)	86th Coolest	Coolest since: 2015	1977
	41.2°F (5.1°C)	40.2°F (4.6°C)	1.0°F (0.5°C)	42nd Warmest	Warmest since: 2017	1932
	Ties: 1949, 1961, 1966, 2013
Aug 2017–Feb 2018 7-Month	45.4°F (7.4°C)	45.0°F (7.2°C)	0.4°F (0.2°C)	67th Coolest	Coolest since: 2015	1977
Aug 2017–Feb 2018 7-Month	45.4°F (7.4°C)	45.0°F (7.2°C)	0.4°F (0.2°C)	61st Warmest	Warmest since: 2017	1932
Jul 2017–Feb 2018 8-Month	49.2°F (9.6°C)	48.8°F (9.3°C)	0.4°F (0.3°C)	69th Coolest	Coolest since: 2015	1977
	49.2°F (9.6°C)	48.8°F (9.3°C)	0.4°F (0.3°C)	59th Warmest	Warmest since: 2017	1932
	Ties: 1907, 2007
Jun 2017–Feb 2018 9-Month	51.8°F (11.0°C)	51.3°F (10.7°C)	0.5°F (0.3°C)	74th Coolest	Coolest since: 2015	1977
Jun 2017–Feb 2018 9-Month	51.8°F (11.0°C)	51.3°F (10.7°C)	0.5°F (0.3°C)	54th Warmest	Warmest since: 2017	1932
May 2017–Feb 2018 10-Month	52.8°F (11.6°C)	52.4°F (11.3°C)	0.4°F (0.3°C)	72nd Coolest	Coolest since: 2015	1918
	52.8°F (11.6°C)	52.4°F (11.3°C)	0.4°F (0.3°C)	56th Warmest	Warmest since: 2017	1932
	Ties: 1913, 1940, 1945, 1974, 2007
Apr 2017–Feb 2018 11-Month	53.1°F (11.7°C)	52.4°F (11.3°C)	0.7°F (0.4°C)	84th Coolest	Coolest since: 2015	1918
	53.1°F (11.7°C)	52.4°F (11.3°C)	0.7°F (0.4°C)	44th Warmest	Warmest since: 2017	1932
	Ties: 1897, 1909, 1972, 1983
Mar 2017–Feb 2018 12-Month	52.2°F (11.2°C)	51.2°F (10.7°C)	1.0°F (0.5°C)	92nd Coolest	Coolest since: 2015	1918
	52.2°F (11.2°C)	51.2°F (10.7°C)	1.0°F (0.5°C)	36th Warmest	Warmest since: 2017	2017
	Ties: 1909
Sep 2016–Feb 2018 18-Month	50.1°F (10.1°C)	47.5°F (8.6°C)	2.6°F (1.5°C)	119th Coolest	Coolest since: 2016	1905
Sep 2016–Feb 2018 18-Month	50.1°F (10.1°C)	47.5°F (8.6°C)	2.6°F (1.5°C)	8th Warmest	Warmest since: 2017	2017
Mar 2016–Feb 2018 24-Month	53.7°F (12.1°C)	51.3°F (10.7°C)	2.4°F (1.4°C)	123rd Coolest	Coolest since: 2016	1905
Mar 2016–Feb 2018 24-Month	53.7°F (12.1°C)	51.3°F (10.7°C)	2.4°F (1.4°C)	4th Warmest	Warmest since: 2017	2017
Mar 2015–Feb 2018 36-Month	53.6°F (12.0°C)	51.2°F (10.7°C)	2.4°F (1.3°C)	125th Coolest	Coolest since: 2017	1979
Mar 2015–Feb 2018 36-Month	53.6°F (12.0°C)	51.2°F (10.7°C)	2.4°F (1.3°C)	1st Warmest	Warmest to Date	2018
Mar 2014–Feb 2018 48-Month	52.6°F (11.4°C)	51.3°F (10.7°C)	1.3°F (0.7°C)	118th Coolest	Coolest since: 2017	1905, 1980
	52.6°F (11.4°C)	51.3°F (10.7°C)	1.3°F (0.7°C)	7th Warmest	Warmest since: 2013	1934, 1935, 2019
	Ties: 1933, 1957, 2013
Mar 2013–Feb 2018 60-Month	51.7°F (10.9°C)	51.2°F (10.7°C)	0.5°F (0.2°C)	82nd Coolest	Coolest since: 2015	1905
	51.7°F (10.9°C)	51.2°F (10.7°C)	0.5°F (0.2°C)	42nd Warmest	Warmest since: 2017	1935
	Ties: 1926, 1940, 1944, 2010, 2014

Citing This Page

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