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, June 2018

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
June 2018 1-Month	78.1°F (25.6°C)	73.9°F (23.3°C)	4.2°F (2.3°C)	122nd Coolest	Coolest since: 2017	1903
June 2018 1-Month	78.1°F (25.6°C)	73.9°F (23.3°C)	4.2°F (2.3°C)	7th Warmest	Warmest since: 2010	1952
May–Jun 2018 2-Month	75.6°F (24.2°C)	69.5°F (20.8°C)	6.1°F (3.4°C)	128th Coolest	Coolest since: 2017	1907
May–Jun 2018 2-Month	75.6°F (24.2°C)	69.5°F (20.8°C)	6.1°F (3.4°C)	1st Warmest	Warmest to Date	2018
Apr–Jun 2018 3-Month	66.9°F (19.4°C)	64.7°F (18.2°C)	2.2°F (1.2°C)	111th Coolest	Coolest since: 2016	1907
	66.9°F (19.4°C)	64.7°F (18.2°C)	2.2°F (1.2°C)	18th Warmest	Warmest since: 2017	2010
	Ties: 1952, 1998, 2006
Mar–Jun 2018 4-Month	61.2°F (16.2°C)	59.7°F (15.4°C)	1.5°F (0.8°C)	98th Coolest	Coolest since: 2015	1960
	61.2°F (16.2°C)	59.7°F (15.4°C)	1.5°F (0.8°C)	31st Warmest	Warmest since: 2017	2012
	Ties: 1896, 1959, 1967, 2000, 2015
Feb–Jun 2018 5-Month	56.7°F (13.7°C)	54.7°F (12.6°C)	2.0°F (1.1°C)	108th Coolest	Coolest since: 2015	1912, 1960, 1978
	56.7°F (13.7°C)	54.7°F (12.6°C)	2.0°F (1.1°C)	21st Warmest	Warmest since: 2017	2012
	Ties: 1952, 1976, 2004
Jan–Jun 2018 6-Month	52.0°F (11.1°C)	50.8°F (10.4°C)	1.2°F (0.7°C)	94th Coolest	Coolest since: 2015	1912, 1978
	52.0°F (11.1°C)	50.8°F (10.4°C)	1.2°F (0.7°C)	35th Warmest	Warmest since: 2017	2012
	Ties: 1922, 1934, 1955, 2009, 2011
Dec 2017–Jun 2018 7-Month	49.5°F (9.7°C)	48.5°F (9.2°C)	1.0°F (0.5°C)	85th Coolest	Coolest since: 2015	1978
	49.5°F (9.7°C)	48.5°F (9.2°C)	1.0°F (0.5°C)	43rd Warmest	Warmest since: 2017	2012
	Ties: 1914, 1942, 1944, 2010, 2013
Nov 2017–Jun 2018 8-Month	49.2°F (9.6°C)	48.0°F (8.9°C)	1.2°F (0.7°C)	92nd Coolest	Coolest since: 2015	1912
Nov 2017–Jun 2018 8-Month	49.2°F (9.6°C)	48.0°F (8.9°C)	1.2°F (0.7°C)	36th Warmest	Warmest since: 2017	2012
Oct 2017–Jun 2018 9-Month	50.4°F (10.2°C)	49.0°F (9.4°C)	1.4°F (0.8°C)	99th Coolest	Coolest since: 2015	1912, 1978
	50.4°F (10.2°C)	49.0°F (9.4°C)	1.4°F (0.8°C)	29th Warmest	Warmest since: 2017	2012
	Ties: 1946
Sep 2017–Jun 2018 10-Month	52.5°F (11.4°C)	51.1°F (10.6°C)	1.4°F (0.8°C)	106th Coolest	Coolest since: 2015	1978
	52.5°F (11.4°C)	51.1°F (10.6°C)	1.4°F (0.8°C)	22nd Warmest	Warmest since: 2017	2012
	Ties: 1942, 1953, 1974
Aug 2017–Jun 2018 11-Month	54.4°F (12.4°C)	53.4°F (11.9°C)	1.0°F (0.5°C)	94th Coolest	Coolest since: 2015	1904, 1978
	54.4°F (12.4°C)	53.4°F (11.9°C)	1.0°F (0.5°C)	34th Warmest	Warmest since: 2017	2012
	Ties: 1898, 1938
Jul 2017–Jun 2018 12-Month	56.5°F (13.6°C)	55.4°F (13.0°C)	1.1°F (0.6°C)	100th Coolest	Coolest since: 2015	1904, 1912, 1918, 1978
	56.5°F (13.6°C)	55.4°F (13.0°C)	1.1°F (0.6°C)	28th Warmest	Warmest since: 2017	2012
	Ties: 1937, 1981, 2008
Jan 2017–Jun 2018 18-Month	56.1°F (13.4°C)	53.8°F (12.1°C)	2.3°F (1.3°C)	120th Coolest	Coolest since: 2016	1979
	56.1°F (13.4°C)	53.8°F (12.1°C)	2.3°F (1.3°C)	8th Warmest	Warmest since: 2017	2017
	Ties: 1939, 1954, 2000
Jul 2016–Jun 2018 24-Month	57.8°F (14.3°C)	55.4°F (13.0°C)	2.4°F (1.3°C)	123rd Coolest	Coolest since: 2016	1978, 1979
Jul 2016–Jun 2018 24-Month	57.8°F (14.3°C)	55.4°F (13.0°C)	2.4°F (1.3°C)	4th Warmest	Warmest since: 2017	2017
Jul 2015–Jun 2018 36-Month	58.0°F (14.4°C)	55.3°F (12.9°C)	2.7°F (1.5°C)	125th Coolest	Coolest since: 2017	1979
Jul 2015–Jun 2018 36-Month	58.0°F (14.4°C)	55.3°F (12.9°C)	2.7°F (1.5°C)	1st Warmest	Warmest to Date	2018
Jul 2014–Jun 2018 48-Month	57.2°F (14.0°C)	55.4°F (13.0°C)	1.8°F (1.0°C)	123rd Coolest	Coolest since: 2017	1980
	57.2°F (14.0°C)	55.4°F (13.0°C)	1.8°F (1.0°C)	2nd Warmest	Warmest to Date	2019
	Ties: 2020
Jul 2013–Jun 2018 60-Month	56.5°F (13.6°C)	55.3°F (12.9°C)	1.2°F (0.7°C)	107th Coolest	Coolest since: 2017	1980
	56.5°F (13.6°C)	55.3°F (12.9°C)	1.2°F (0.7°C)	17th Warmest	Warmest since: 2017	2020
	Ties: 1956, 2003, 2017

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on February 4, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings