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 2010

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 2010 1-Month	63.6°F (17.6°C)	61.0°F (16.1°C)	2.6°F (1.5°C)	94th Coolest	Coolest since: 2009	1907
May 2010 1-Month	63.6°F (17.6°C)	61.0°F (16.1°C)	2.6°F (1.5°C)	35th Warmest	Warmest since: 2007	2018
Apr–May 2010 2-Month	60.5°F (15.8°C)	55.4°F (13.0°C)	5.1°F (2.8°C)	125th Coolest	Coolest since: 2009	1907
Apr–May 2010 2-Month	60.5°F (15.8°C)	55.4°F (13.0°C)	5.1°F (2.8°C)	4th Warmest	Warmest since: 1991	1977
Mar–May 2010 3-Month	54.6°F (12.6°C)	49.7°F (9.8°C)	4.9°F (2.8°C)	125th Coolest	Coolest since: 2009	1960
Mar–May 2010 3-Month	54.6°F (12.6°C)	49.7°F (9.8°C)	4.9°F (2.8°C)	4th Warmest	Warmest since: 1991	2012
Feb–May 2010 4-Month	47.0°F (8.3°C)	44.1°F (6.7°C)	2.9°F (1.6°C)	113th Coolest	Coolest since: 2009	1978
Feb–May 2010 4-Month	47.0°F (8.3°C)	44.1°F (6.7°C)	2.9°F (1.6°C)	16th Warmest	Warmest since: 2004	2012
Jan–May 2010 5-Month	41.6°F (5.3°C)	40.1°F (4.5°C)	1.5°F (0.8°C)	94th Coolest	Coolest since: 2009	1978
	41.6°F (5.3°C)	40.1°F (4.5°C)	1.5°F (0.8°C)	35th Warmest	Warmest since: 2007	2012
	Ties: 1925, 1930, 1931, 1939, 1944
Dec 2009–May 2010 6-Month	39.4°F (4.1°C)	38.1°F (3.4°C)	1.3°F (0.7°C)	89th Coolest	Coolest since: 2009	1978
	39.4°F (4.1°C)	38.1°F (3.4°C)	1.3°F (0.7°C)	39th Warmest	Warmest since: 2007	2012
	Ties: 1931, 2021
Nov 2009–May 2010 7-Month	40.3°F (4.6°C)	38.3°F (3.5°C)	2.0°F (1.1°C)	104th Coolest	Coolest since: 2009	1904
	40.3°F (4.6°C)	38.3°F (3.5°C)	2.0°F (1.1°C)	24th Warmest	Warmest since: 2007	2012
	Ties: 1919, 1955, 2021
Oct 2009–May 2010 8-Month	41.5°F (5.3°C)	40.2°F (4.6°C)	1.3°F (0.7°C)	95th Coolest	Coolest since: 2009	1904
	41.5°F (5.3°C)	40.2°F (4.6°C)	1.3°F (0.7°C)	33rd Warmest	Warmest since: 2007	2012
	Ties: 1957, 1964
Sep 2009–May 2010 9-Month	44.1°F (6.7°C)	43.0°F (6.1°C)	1.1°F (0.6°C)	95th Coolest	Coolest since: 2009	1904
	44.1°F (6.7°C)	43.0°F (6.1°C)	1.1°F (0.6°C)	33rd Warmest	Warmest since: 2007	2012
	Ties: 1898, 1953, 1957, 1964
Aug 2009–May 2010 10-Month	46.7°F (8.2°C)	45.9°F (7.7°C)	0.8°F (0.5°C)	87th Coolest	Coolest since: 2009	1904
	46.7°F (8.2°C)	45.9°F (7.7°C)	0.8°F (0.5°C)	41st Warmest	Warmest since: 2008	2012
	Ties: 2013, 2018
Jul 2009–May 2010 11-Month	48.7°F (9.3°C)	48.5°F (9.2°C)	0.2°F (0.1°C)	67th Coolest	Coolest since: 2009	1904
	48.7°F (9.3°C)	48.5°F (9.2°C)	0.2°F (0.1°C)	61st Warmest	Warmest since: 2008	2012
	Ties: 1896, 1945, 1973
Jun 2009–May 2010 12-Month	50.7°F (10.4°C)	50.4°F (10.2°C)	0.3°F (0.2°C)	70th Coolest	Coolest since: 2009	1904
Jun 2009–May 2010 12-Month	50.7°F (10.4°C)	50.4°F (10.2°C)	0.3°F (0.2°C)	58th Warmest	Warmest since: 2008	2012
Dec 2008–May 2010 18-Month	46.4°F (8.0°C)	46.2°F (7.9°C)	0.2°F (0.1°C)	67th Coolest	Coolest since: 2009	1905
	46.4°F (8.0°C)	46.2°F (7.9°C)	0.2°F (0.1°C)	60th Warmest	Warmest since: 2008	2017
	Ties: 1898, 1928, 1943, 1973
Jun 2008–May 2010 24-Month	50.5°F (10.3°C)	50.3°F (10.2°C)	0.2°F (0.1°C)	66th Coolest	Coolest since: 1997	1905
	50.5°F (10.3°C)	50.3°F (10.2°C)	0.2°F (0.1°C)	61st Warmest	Warmest since: 2009	2017
	Ties: 1931, 1958, 1965, 1995
Jun 2007–May 2010 36-Month	50.8°F (10.4°C)	50.3°F (10.2°C)	0.5°F (0.2°C)	80th Coolest	Coolest since: 1998	1905, 1906
	50.8°F (10.4°C)	50.3°F (10.2°C)	0.5°F (0.2°C)	46th Warmest	Warmest since: 2009	2018
	Ties: 1949, 1985
Jun 2006–May 2010 48-Month	51.0°F (10.6°C)	50.3°F (10.2°C)	0.7°F (0.4°C)	85th Coolest	Coolest since: 1998	1905
	51.0°F (10.6°C)	50.3°F (10.2°C)	0.7°F (0.4°C)	40th Warmest	Warmest since: 2009	2019
	Ties: 1958, 1994
Jun 2005–May 2010 60-Month	51.5°F (10.8°C)	50.3°F (10.2°C)	1.2°F (0.6°C)	105th Coolest	Coolest since: 2005	1905, 1906, 1908
	51.5°F (10.8°C)	50.3°F (10.2°C)	1.2°F (0.6°C)	19th Warmest	Warmest since: 2009	2020
	Ties: 1934, 2000, 2016, 2017

Citing This Page

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