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 5. East

Average Temperature Rankings, May 2018

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 2018 1-Month	70.1°F (21.2°C)	61.0°F (16.1°C)	9.1°F (5.1°C)	128th Coolest	Coolest since: 2017	1907
May 2018 1-Month	70.1°F (21.2°C)	61.0°F (16.1°C)	9.1°F (5.1°C)	1st Warmest	Warmest to Date	2018
Apr–May 2018 2-Month	56.8°F (13.8°C)	55.5°F (13.1°C)	1.3°F (0.7°C)	92nd Coolest	Coolest since: 2016	1907
	56.8°F (13.8°C)	55.5°F (13.1°C)	1.3°F (0.7°C)	37th Warmest	Warmest since: 2017	1977
	Ties: 1899, 1912, 1914
Mar–May 2018 3-Month	50.2°F (10.1°C)	49.7°F (9.8°C)	0.5°F (0.3°C)	73rd Coolest	Coolest since: 2014	1960
	50.2°F (10.1°C)	49.7°F (9.8°C)	0.5°F (0.3°C)	56th Warmest	Warmest since: 2017	2012
	Ties: 1927, 1992, 1994
Feb–May 2018 4-Month	45.3°F (7.4°C)	44.2°F (6.8°C)	1.1°F (0.6°C)	89th Coolest	Coolest since: 2015	1978
Feb–May 2018 4-Month	45.3°F (7.4°C)	44.2°F (6.8°C)	1.1°F (0.6°C)	40th Warmest	Warmest since: 2017	2012
Jan–May 2018 5-Month	40.6°F (4.8°C)	40.1°F (4.5°C)	0.5°F (0.3°C)	74th Coolest	Coolest since: 2015	1978
	40.6°F (4.8°C)	40.1°F (4.5°C)	0.5°F (0.3°C)	55th Warmest	Warmest since: 2017	2012
	Ties: 1903, 1934, 1995, 2009, 2013
Dec 2017–May 2018 6-Month	38.6°F (3.7°C)	38.2°F (3.4°C)	0.4°F (0.3°C)	71st Coolest	Coolest since: 2015	1978
	38.6°F (3.7°C)	38.2°F (3.4°C)	0.4°F (0.3°C)	57th Warmest	Warmest since: 2017	2012
	Ties: 1950, 1989
Nov 2017–May 2018 7-Month	38.9°F (3.8°C)	38.4°F (3.6°C)	0.5°F (0.2°C)	77th Coolest	Coolest since: 2015	1904
	38.9°F (3.8°C)	38.4°F (3.6°C)	0.5°F (0.2°C)	51st Warmest	Warmest since: 2017	2012
	Ties: 1933, 1957
Oct 2017–May 2018 8-Month	41.2°F (5.1°C)	40.2°F (4.6°C)	1.0°F (0.5°C)	88th Coolest	Coolest since: 2015	1904
	41.2°F (5.1°C)	40.2°F (4.6°C)	1.0°F (0.5°C)	40th Warmest	Warmest since: 2017	2012
	Ties: 1946, 1950, 1986
Sep 2017–May 2018 9-Month	44.2°F (6.8°C)	43.0°F (6.1°C)	1.2°F (0.7°C)	96th Coolest	Coolest since: 2015	1904
Sep 2017–May 2018 9-Month	44.2°F (6.8°C)	43.0°F (6.1°C)	1.2°F (0.7°C)	32nd Warmest	Warmest since: 2017	2012
Aug 2017–May 2018 10-Month	46.7°F (8.2°C)	45.9°F (7.7°C)	0.8°F (0.5°C)	87th Coolest	Coolest since: 2015	1904
	46.7°F (8.2°C)	45.9°F (7.7°C)	0.8°F (0.5°C)	41st Warmest	Warmest since: 2017	2012
	Ties: 2010, 2013
Jul 2017–May 2018 11-Month	49.3°F (9.6°C)	48.5°F (9.2°C)	0.8°F (0.4°C)	88th Coolest	Coolest since: 2015	1904
	49.3°F (9.6°C)	48.5°F (9.2°C)	0.8°F (0.4°C)	40th Warmest	Warmest since: 2017	2012
	Ties: 1919, 1935, 1989, 2008
Jun 2017–May 2018 12-Month	51.2°F (10.7°C)	50.3°F (10.2°C)	0.9°F (0.5°C)	88th Coolest	Coolest since: 2015	1904
	51.2°F (10.7°C)	50.3°F (10.2°C)	0.9°F (0.5°C)	40th Warmest	Warmest since: 2017	2012
	Ties: 1957, 1988, 2008, 2011
Dec 2016–May 2018 18-Month	48.4°F (9.1°C)	46.2°F (7.9°C)	2.2°F (1.2°C)	115th Coolest	Coolest since: 2016	1905
Dec 2016–May 2018 18-Month	48.4°F (9.1°C)	46.2°F (7.9°C)	2.2°F (1.2°C)	12th Warmest	Warmest since: 2017	2017
Jun 2016–May 2018 24-Month	52.9°F (11.6°C)	50.3°F (10.2°C)	2.6°F (1.4°C)	123rd Coolest	Coolest since: 2016	1905
	52.9°F (11.6°C)	50.3°F (10.2°C)	2.6°F (1.4°C)	4th Warmest	Warmest since: 2017	2017
	Ties: 2000
Jun 2015–May 2018 36-Month	53.1°F (11.7°C)	50.3°F (10.2°C)	2.8°F (1.5°C)	125th Coolest	Coolest since: 2017	1905, 1906
Jun 2015–May 2018 36-Month	53.1°F (11.7°C)	50.3°F (10.2°C)	2.8°F (1.5°C)	1st Warmest	Warmest to Date	2018
Jun 2014–May 2018 48-Month	52.2°F (11.2°C)	50.3°F (10.2°C)	1.9°F (1.0°C)	123rd Coolest	Coolest since: 2017	1905
	52.2°F (11.2°C)	50.3°F (10.2°C)	1.9°F (1.0°C)	2nd Warmest	Warmest to Date	2019
	Ties: 2020
Jun 2013–May 2018 60-Month	51.4°F (10.8°C)	50.3°F (10.2°C)	1.1°F (0.6°C)	100th Coolest	Coolest since: 2015	1905, 1906, 1908
	51.4°F (10.8°C)	50.3°F (10.2°C)	1.1°F (0.6°C)	24th Warmest	Warmest since: 2017	2020
	Ties: 1956, 1989

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on February 8, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings