Statewide 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

Average Temperature Rankings, October 2018

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
October 2018 1-Month	54.2°F (12.3°C)	54.6°F (12.6°C)	-0.4°F (-0.3°C)	55th Coolest	Coolest since: 2012	1925
	54.2°F (12.3°C)	54.6°F (12.6°C)	-0.4°F (-0.3°C)	74th Warmest	Warmest since: 2017	1963
	Ties: 2008
Sep–Oct 2018 2-Month	62.2°F (16.8°C)	60.4°F (15.8°C)	1.8°F (1.0°C)	100th Coolest	Coolest since: 2014	1917
	62.2°F (16.8°C)	60.4°F (15.8°C)	1.8°F (1.0°C)	29th Warmest	Warmest since: 2017	1897, 2016
	Ties: 1986, 2000
Aug–Oct 2018 3-Month	66.4°F (19.1°C)	64.8°F (18.2°C)	1.6°F (0.9°C)	105th Coolest	Coolest since: 2017	1917
	66.4°F (19.1°C)	64.8°F (18.2°C)	1.6°F (0.9°C)	24th Warmest	Warmest since: 2016	1947
	Ties: 1920
Jul–Oct 2018 4-Month	68.6°F (20.3°C)	67.5°F (19.7°C)	1.1°F (0.6°C)	100th Coolest	Coolest since: 2017	1917
	68.6°F (20.3°C)	67.5°F (19.7°C)	1.1°F (0.6°C)	29th Warmest	Warmest since: 2016	1936
	Ties: 1922, 1930, 1933, 1940, 2002
Jun–Oct 2018 5-Month	69.8°F (21.0°C)	68.2°F (20.1°C)	1.6°F (0.9°C)	105th Coolest	Coolest since: 2017	1917
	69.8°F (21.0°C)	68.2°F (20.1°C)	1.6°F (0.9°C)	24th Warmest	Warmest since: 2016	1936
	Ties: 1973
May–Oct 2018 6-Month	70.0°F (21.1°C)	67.3°F (19.6°C)	2.7°F (1.5°C)	125th Coolest	Coolest since: 2017	1917
May–Oct 2018 6-Month	70.0°F (21.1°C)	67.3°F (19.6°C)	2.7°F (1.5°C)	4th Warmest	Warmest since: 2007	1936
Apr–Oct 2018 7-Month	66.4°F (19.1°C)	65.0°F (18.3°C)	1.4°F (0.8°C)	108th Coolest	Coolest since: 2017	1917
	66.4°F (19.1°C)	65.0°F (18.3°C)	1.4°F (0.8°C)	21st Warmest	Warmest since: 2017	2010
	Ties: 1938, 1986, 2017
Mar–Oct 2018 8-Month	63.0°F (17.2°C)	61.9°F (16.6°C)	1.1°F (0.6°C)	102nd Coolest	Coolest since: 2015	1917
	63.0°F (17.2°C)	61.9°F (16.6°C)	1.1°F (0.6°C)	27th Warmest	Warmest since: 2017	2012
	Ties: 1914, 1939
Feb–Oct 2018 9-Month	59.5°F (15.3°C)	58.2°F (14.6°C)	1.3°F (0.7°C)	105th Coolest	Coolest since: 2015	1917
	59.5°F (15.3°C)	58.2°F (14.6°C)	1.3°F (0.7°C)	24th Warmest	Warmest since: 2017	2012
	Ties: 1911
Jan–Oct 2018 10-Month	56.0°F (13.3°C)	54.9°F (12.7°C)	1.1°F (0.6°C)	94th Coolest	Coolest since: 2015	1904
	56.0°F (13.3°C)	54.9°F (12.7°C)	1.1°F (0.6°C)	35th Warmest	Warmest since: 2017	2012
	Ties: 2020
Dec 2017–Oct 2018 11-Month	53.6°F (12.0°C)	52.6°F (11.4°C)	1.0°F (0.6°C)	94th Coolest	Coolest since: 2015	1904
	53.6°F (12.0°C)	52.6°F (11.4°C)	1.0°F (0.6°C)	34th Warmest	Warmest since: 2017	2012
	Ties: 1911, 1946, 1949
Nov 2017–Oct 2018 12-Month	52.6°F (11.4°C)	51.6°F (10.9°C)	1.0°F (0.5°C)	94th Coolest	Coolest since: 2015	1904
	52.6°F (11.4°C)	51.6°F (10.9°C)	1.0°F (0.5°C)	34th Warmest	Warmest since: 2017	2012
	Ties: 1988, 2020
May 2017–Oct 2018 18-Month	57.8°F (14.3°C)	56.9°F (13.8°C)	0.9°F (0.5°C)	97th Coolest	Coolest since: 2015	1904
	57.8°F (14.3°C)	56.9°F (13.8°C)	0.9°F (0.5°C)	31st Warmest	Warmest since: 2017	2012
	Ties: 1941, 1988, 2011, 2013, 2020
Nov 2016–Oct 2018 24-Month	53.7°F (12.1°C)	51.6°F (10.9°C)	2.1°F (1.2°C)	117th Coolest	Coolest since: 2016	1905
	53.7°F (12.1°C)	51.6°F (10.9°C)	2.1°F (1.2°C)	10th Warmest	Warmest since: 2017	2017
	Ties: 2006
Nov 2015–Oct 2018 36-Month	54.4°F (12.4°C)	51.6°F (10.9°C)	2.8°F (1.5°C)	125th Coolest	Coolest since: 2017	1904, 1979
Nov 2015–Oct 2018 36-Month	54.4°F (12.4°C)	51.6°F (10.9°C)	2.8°F (1.5°C)	1st Warmest	Warmest to Date	2018
Nov 2014–Oct 2018 48-Month	53.6°F (12.0°C)	51.6°F (10.9°C)	2.0°F (1.1°C)	123rd Coolest	Coolest since: 2017	1905
	53.6°F (12.0°C)	51.6°F (10.9°C)	2.0°F (1.1°C)	2nd Warmest	Warmest since: 2007	2019
	Ties: 2007
Nov 2013–Oct 2018 60-Month	52.7°F (11.5°C)	51.6°F (10.9°C)	1.1°F (0.6°C)	108th Coolest	Coolest since: 2017	1905, 1906
	52.7°F (11.5°C)	51.6°F (10.9°C)	1.1°F (0.6°C)	16th Warmest	Warmest since: 2016	2002, 2020
	Ties: 1936, 2001, 2004, 2005, 2009, 2012, 2022

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on February 3, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings