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 7. East Southeast

Average Temperature Rankings, September 1918

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1918 1-Month	59.4°F (15.2°C)	67.4°F (19.7°C)	-8.0°F (-4.5°C)	1st Coolest	Coolest since: 1918	1918
September 1918 1-Month	59.4°F (15.2°C)	67.4°F (19.7°C)	-8.0°F (-4.5°C)	128th Warmest	Warmest since: 1917	1925
Aug–Sep 1918 2-Month	69.2°F (20.7°C)	70.8°F (21.6°C)	-1.6°F (-0.9°C)	20th Coolest	Coolest since: 1917	1967
	69.2°F (20.7°C)	70.8°F (21.6°C)	-1.6°F (-0.9°C)	109th Warmest	Warmest since: 1916	1936
	Ties: 1904, 1907, 1928, 1975, 2004
Jul–Sep 1918 3-Month	70.6°F (21.4°C)	72.7°F (22.6°C)	-2.1°F (-1.2°C)	12th Coolest	Coolest since: 1915	1967
	70.6°F (21.4°C)	72.7°F (22.6°C)	-2.1°F (-1.2°C)	117th Warmest	Warmest since: 1917	1936
	Ties: 1974
Jun–Sep 1918 4-Month	71.0°F (21.7°C)	72.5°F (22.5°C)	-1.5°F (-0.8°C)	20th Coolest	Coolest since: 1917	1967
	71.0°F (21.7°C)	72.5°F (22.5°C)	-1.5°F (-0.8°C)	109th Warmest	Warmest since: 1916	1936
	Ties: 1946, 1985, 2014
May–Sep 1918 5-Month	70.3°F (21.3°C)	70.7°F (21.5°C)	-0.4°F (-0.2°C)	49th Coolest	Coolest since: 1917	1924
May–Sep 1918 5-Month	70.3°F (21.3°C)	70.7°F (21.5°C)	-0.4°F (-0.2°C)	80th Warmest	Warmest since: 1916	1936
Apr–Sep 1918 6-Month	66.7°F (19.3°C)	67.8°F (19.9°C)	-1.1°F (-0.6°C)	28th Coolest	Coolest since: 1917	1907
	66.7°F (19.3°C)	67.8°F (19.9°C)	-1.1°F (-0.6°C)	101st Warmest	Warmest since: 1916	2010
	Ties: 1903, 1929, 1946
Mar–Sep 1918 7-Month	63.9°F (17.7°C)	64.0°F (17.8°C)	-0.1°F (-0.1°C)	56th Coolest	Coolest since: 1917	1924
	63.9°F (17.7°C)	64.0°F (17.8°C)	-0.1°F (-0.1°C)	73rd Warmest	Warmest since: 1914	2012
	Ties: 1929, 1968, 1981
Feb–Sep 1918 8-Month	59.9°F (15.5°C)	59.9°F (15.5°C)	0.0°F (0.0°C)	57th Coolest	Coolest since: 1917	1904, 1924
	59.9°F (15.5°C)	59.9°F (15.5°C)	0.0°F (0.0°C)	72nd Warmest	Warmest since: 1914	2012
	Ties: 1962, 1985, 1992
Jan–Sep 1918 9-Month	54.6°F (12.6°C)	56.3°F (13.5°C)	-1.7°F (-0.9°C)	12th Coolest	Coolest since: 1917	1979
	54.6°F (12.6°C)	56.3°F (13.5°C)	-1.7°F (-0.9°C)	117th Warmest	Warmest since: 1916	2012
	Ties: 1902
Dec 1917–Sep 1918 10-Month	51.4°F (10.8°C)	53.9°F (12.2°C)	-2.5°F (-1.4°C)	4th Coolest	Coolest since: 1912	1904
	51.4°F (10.8°C)	53.9°F (12.2°C)	-2.5°F (-1.4°C)	124th Warmest	Warmest since: 1917	2012
	Ties: 1912, 1982, 2014
Nov 1917–Sep 1918 11-Month	50.6°F (10.3°C)	52.9°F (11.6°C)	-2.3°F (-1.3°C)	8th Coolest	Coolest since: 1912	1904
Nov 1917–Sep 1918 11-Month	50.6°F (10.3°C)	52.9°F (11.6°C)	-2.3°F (-1.3°C)	120th Warmest	Warmest since: 1917	2012
Oct 1917–Sep 1918 12-Month	50.3°F (10.2°C)	53.1°F (11.7°C)	-2.8°F (-1.5°C)	3rd Coolest	Coolest since: 1904	1904
Oct 1917–Sep 1918 12-Month	50.3°F (10.2°C)	53.1°F (11.7°C)	-2.8°F (-1.5°C)	125th Warmest	Warmest since: 1917	2012
Apr 1917–Sep 1918 18-Month	55.2°F (12.9°C)	58.0°F (14.4°C)	-2.8°F (-1.5°C)	1st Coolest	Coolest since: 1918	1918
Apr 1917–Sep 1918 18-Month	55.2°F (12.9°C)	58.0°F (14.4°C)	-2.8°F (-1.5°C)	127th Warmest	Warmest since: 1917	2012
Oct 1916–Sep 1918 24-Month	50.9°F (10.5°C)	53.1°F (11.7°C)	-2.2°F (-1.2°C)	4th Coolest	Coolest since: 1905	1979
Oct 1916–Sep 1918 24-Month	50.9°F (10.5°C)	53.1°F (11.7°C)	-2.2°F (-1.2°C)	123rd Warmest	Warmest since: 1917	2017
Oct 1915–Sep 1918 36-Month	51.6°F (10.9°C)	53.0°F (11.7°C)	-1.4°F (-0.8°C)	6th Coolest	Coolest since: 1906	1979
Oct 1915–Sep 1918 36-Month	51.6°F (10.9°C)	53.0°F (11.7°C)	-1.4°F (-0.8°C)	120th Warmest	Warmest since: 1917	2018
Oct 1914–Sep 1918 48-Month	51.7°F (10.9°C)	53.0°F (11.7°C)	-1.3°F (-0.8°C)	6th Coolest	Coolest since: 1907	1980
Oct 1914–Sep 1918 48-Month	51.7°F (10.9°C)	53.0°F (11.7°C)	-1.3°F (-0.8°C)	119th Warmest	Warmest since: 1917	2019
Oct 1913–Sep 1918 60-Month	52.2°F (11.2°C)	53.0°F (11.7°C)	-0.8°F (-0.5°C)	11th Coolest	Coolest since: 1908	1982
	52.2°F (11.2°C)	53.0°F (11.7°C)	-0.8°F (-0.5°C)	113th Warmest	Warmest since: 1917	2020
	Ties: 1920, 1970

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