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 2015

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
June 2015 1-Month	75.5°F (24.2°C)	73.9°F (23.3°C)	1.6°F (0.9°C)	94th Coolest	Coolest since: 2014	1903
	75.5°F (24.2°C)	73.9°F (23.3°C)	1.6°F (0.9°C)	35th Warmest	Warmest since: 2011	1952
	Ties: 1898, 2020
May–Jun 2015 2-Month	71.4°F (21.9°C)	69.5°F (20.8°C)	1.9°F (1.1°C)	100th Coolest	Coolest since: 2014	1907
May–Jun 2015 2-Month	71.4°F (21.9°C)	69.5°F (20.8°C)	1.9°F (1.1°C)	29th Warmest	Warmest since: 2012	2018
Apr–Jun 2015 3-Month	67.1°F (19.5°C)	64.8°F (18.2°C)	2.3°F (1.3°C)	116th Coolest	Coolest since: 2014	1907
	67.1°F (19.5°C)	64.8°F (18.2°C)	2.3°F (1.3°C)	13th Warmest	Warmest since: 2012	2010
	Ties: 1914
Mar–Jun 2015 4-Month	61.2°F (16.2°C)	59.7°F (15.4°C)	1.5°F (0.8°C)	98th Coolest	Coolest since: 2014	1960
	61.2°F (16.2°C)	59.7°F (15.4°C)	1.5°F (0.8°C)	31st Warmest	Warmest since: 2012	2012
	Ties: 1896, 1959, 1967, 2000, 2018
Feb–Jun 2015 5-Month	54.2°F (12.3°C)	54.8°F (12.7°C)	-0.6°F (-0.4°C)	51st Coolest	Coolest since: 2014	1912, 1960, 1978
	54.2°F (12.3°C)	54.8°F (12.7°C)	-0.6°F (-0.4°C)	78th Warmest	Warmest since: 2012	2012
	Ties: 1905
Jan–Jun 2015 6-Month	50.4°F (10.2°C)	50.8°F (10.4°C)	-0.4°F (-0.2°C)	51st Coolest	Coolest since: 2014	1912, 1978
	50.4°F (10.2°C)	50.8°F (10.4°C)	-0.4°F (-0.2°C)	78th Warmest	Warmest since: 2013	2012
	Ties: 2008
Dec 2014–Jun 2015 7-Month	48.7°F (9.3°C)	48.5°F (9.2°C)	0.2°F (0.1°C)	66th Coolest	Coolest since: 2014	1978
	48.7°F (9.3°C)	48.5°F (9.2°C)	0.2°F (0.1°C)	62nd Warmest	Warmest since: 2013	2012
	Ties: 1973, 1975, 1988
Nov 2014–Jun 2015 8-Month	47.4°F (8.6°C)	48.0°F (8.9°C)	-0.6°F (-0.3°C)	39th Coolest	Coolest since: 2014	1912
	47.4°F (8.6°C)	48.0°F (8.9°C)	-0.6°F (-0.3°C)	89th Warmest	Warmest since: 2013	2012
	Ties: 1907, 1945, 1947
Oct 2014–Jun 2015 9-Month	48.6°F (9.2°C)	49.1°F (9.5°C)	-0.5°F (-0.3°C)	44th Coolest	Coolest since: 2014	1912, 1978
	48.6°F (9.2°C)	49.1°F (9.5°C)	-0.5°F (-0.3°C)	84th Warmest	Warmest since: 2013	2012
	Ties: 1945, 1989
Sep 2014–Jun 2015 10-Month	50.5°F (10.3°C)	51.1°F (10.6°C)	-0.6°F (-0.3°C)	39th Coolest	Coolest since: 2014	1978
	50.5°F (10.3°C)	51.1°F (10.6°C)	-0.6°F (-0.3°C)	89th Warmest	Warmest since: 2013	2012
	Ties: 1975
Aug 2014–Jun 2015 11-Month	52.9°F (11.6°C)	53.3°F (11.8°C)	-0.4°F (-0.2°C)	40th Coolest	Coolest since: 2014	1904, 1978
	52.9°F (11.6°C)	53.3°F (11.8°C)	-0.4°F (-0.2°C)	88th Warmest	Warmest since: 2013	2012
	Ties: 1973, 2003
Jul 2014–Jun 2015 12-Month	54.6°F (12.6°C)	55.4°F (13.0°C)	-0.8°F (-0.4°C)	28th Coolest	Coolest since: 2014	1904, 1912, 1918, 1978
	54.6°F (12.6°C)	55.4°F (13.0°C)	-0.8°F (-0.4°C)	100th Warmest	Warmest since: 2013	2012
	Ties: 1928, 1929, 1961
Jan 2014–Jun 2015 18-Month	52.7°F (11.5°C)	53.8°F (12.1°C)	-1.1°F (-0.6°C)	12th Coolest	Coolest since: 1980	1979
	52.7°F (11.5°C)	53.8°F (12.1°C)	-1.1°F (-0.6°C)	116th Warmest	Warmest since: 2014	2017
	Ties: 1899, 1900, 1969
Jul 2013–Jun 2015 24-Month	54.3°F (12.4°C)	55.4°F (13.0°C)	-1.1°F (-0.6°C)	12th Coolest	Coolest since: 1980	1978, 1979
	54.3°F (12.4°C)	55.4°F (13.0°C)	-1.1°F (-0.6°C)	115th Warmest	Warmest since: 2014	2017
	Ties: 1961
Jul 2012–Jun 2015 36-Month	54.9°F (12.7°C)	55.3°F (12.9°C)	-0.4°F (-0.2°C)	28th Coolest	Coolest since: 1997	1979
	54.9°F (12.7°C)	55.3°F (12.9°C)	-0.4°F (-0.2°C)	98th Warmest	Warmest since: 2014	2018
	Ties: 1900, 1908, 1917, 1928, 1951, 1952, 1997
Jul 2011–Jun 2015 48-Month	56.1°F (13.4°C)	55.3°F (12.9°C)	0.8°F (0.5°C)	96th Coolest	Coolest since: 2011	1980
	56.1°F (13.4°C)	55.3°F (12.9°C)	0.8°F (0.5°C)	29th Warmest	Warmest since: 2014	2019
	Ties: 1923, 1924, 1939, 1944, 2010
Jul 2010–Jun 2015 60-Month	56.2°F (13.4°C)	55.4°F (13.0°C)	0.8°F (0.4°C)	100th Coolest	Coolest since: 2011	1980
	56.2°F (13.4°C)	55.4°F (13.0°C)	0.8°F (0.4°C)	24th Warmest	Warmest since: 2014	2020
	Ties: 1933, 1942, 2000, 2001, 2011

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published December 2022, retrieved on December 8, 2022 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings