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 2. Northeast

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	56.9°F (13.8°C)	63.7°F (17.6°C)	-6.8°F (-3.8°C)	1st Coolest	Coolest since: 1918	1918
September 1918 1-Month	56.9°F (13.8°C)	63.7°F (17.6°C)	-6.8°F (-3.8°C)	128th Warmest	Warmest since: 1917	1897
Aug–Sep 1918 2-Month	65.9°F (18.8°C)	67.4°F (19.7°C)	-1.5°F (-0.9°C)	21st Coolest	Coolest since: 1917	1902
	65.9°F (18.8°C)	67.4°F (19.7°C)	-1.5°F (-0.9°C)	108th Warmest	Warmest since: 1916	1947
	Ties: 1965, 1989
Jul–Sep 1918 3-Month	67.5°F (19.7°C)	69.3°F (20.7°C)	-1.8°F (-1.0°C)	12th Coolest	Coolest since: 1917	1924
	67.5°F (19.7°C)	69.3°F (20.7°C)	-1.8°F (-1.0°C)	117th Warmest	Warmest since: 1916	1936
	Ties: 1903
Jun–Sep 1918 4-Month	67.5°F (19.7°C)	69.1°F (20.6°C)	-1.6°F (-0.9°C)	21st Coolest	Coolest since: 1917	1915
Jun–Sep 1918 4-Month	67.5°F (19.7°C)	69.1°F (20.6°C)	-1.6°F (-0.9°C)	108th Warmest	Warmest since: 1916	2005
May–Sep 1918 5-Month	66.7°F (19.3°C)	67.2°F (19.6°C)	-0.5°F (-0.3°C)	41st Coolest	Coolest since: 1917	1924
	66.7°F (19.3°C)	67.2°F (19.6°C)	-0.5°F (-0.3°C)	88th Warmest	Warmest since: 1916	1921, 1988
	Ties: 1905, 1920, 1948, 1960, 1963, 1993, 2014
Apr–Sep 1918 6-Month	62.8°F (17.1°C)	63.9°F (17.7°C)	-1.1°F (-0.6°C)	24th Coolest	Coolest since: 1917	1907
	62.8°F (17.1°C)	63.9°F (17.7°C)	-1.1°F (-0.6°C)	105th Warmest	Warmest since: 1916	1921
	Ties: 1974, 1982, 2009
Mar–Sep 1918 7-Month	59.7°F (15.4°C)	59.9°F (15.5°C)	-0.2°F (-0.1°C)	49th Coolest	Coolest since: 1917	1924
	59.7°F (15.4°C)	59.9°F (15.5°C)	-0.2°F (-0.1°C)	80th Warmest	Warmest since: 1914	2012
	Ties: 1906, 1945, 1971, 2003
Feb–Sep 1918 8-Month	55.3°F (12.9°C)	55.5°F (13.1°C)	-0.2°F (-0.2°C)	55th Coolest	Coolest since: 1917	1904, 1917
	55.3°F (12.9°C)	55.5°F (13.1°C)	-0.2°F (-0.2°C)	74th Warmest	Warmest since: 1911	2012
	Ties: 1906
Jan–Sep 1918 9-Month	50.0°F (10.0°C)	51.7°F (10.9°C)	-1.7°F (-0.9°C)	11th Coolest	Coolest since: 1917	1904, 1912
	50.0°F (10.0°C)	51.7°F (10.9°C)	-1.7°F (-0.9°C)	118th Warmest	Warmest since: 1916	2012
	Ties: 1905, 1920, 1951
Dec 1917–Sep 1918 10-Month	46.8°F (8.2°C)	49.1°F (9.5°C)	-2.3°F (-1.3°C)	8th Coolest	Coolest since: 1917	1904
	46.8°F (8.2°C)	49.1°F (9.5°C)	-2.3°F (-1.3°C)	120th Warmest	Warmest since: 1916	2012
	Ties: 1982
Nov 1917–Sep 1918 11-Month	46.1°F (7.8°C)	48.1°F (8.9°C)	-2.0°F (-1.1°C)	8th Coolest	Coolest since: 1917	1904
	46.1°F (7.8°C)	48.1°F (8.9°C)	-2.0°F (-1.1°C)	120th Warmest	Warmest since: 1916	2012
	Ties: 1926
Oct 1917–Sep 1918 12-Month	45.8°F (7.7°C)	48.5°F (9.2°C)	-2.7°F (-1.5°C)	6th Coolest	Coolest since: 1917	1904
Oct 1917–Sep 1918 12-Month	45.8°F (7.7°C)	48.5°F (9.2°C)	-2.7°F (-1.5°C)	122nd Warmest	Warmest since: 1916	2012
Apr 1917–Sep 1918 18-Month	50.7°F (10.4°C)	53.6°F (12.0°C)	-2.9°F (-1.6°C)	2nd Coolest	Coolest since: 1904	1904
Apr 1917–Sep 1918 18-Month	50.7°F (10.4°C)	53.6°F (12.0°C)	-2.9°F (-1.6°C)	126th Warmest	Warmest since: 1917	2012
Oct 1916–Sep 1918 24-Month	45.7°F (7.6°C)	48.4°F (9.1°C)	-2.7°F (-1.5°C)	1st Coolest	Coolest since: 1918	1918
Oct 1916–Sep 1918 24-Month	45.7°F (7.6°C)	48.4°F (9.1°C)	-2.7°F (-1.5°C)	126th Warmest	Warmest since: 1917	2017
Oct 1915–Sep 1918 36-Month	46.6°F (8.1°C)	48.5°F (9.2°C)	-1.9°F (-1.1°C)	2nd Coolest	Coolest since: 1904	1979
	46.6°F (8.1°C)	48.5°F (9.2°C)	-1.9°F (-1.1°C)	124th Warmest	Warmest since: 1917	2000
	Ties: 1904
Oct 1914–Sep 1918 48-Month	46.7°F (8.2°C)	48.4°F (9.1°C)	-1.7°F (-0.9°C)	1st Coolest	Coolest since: 1905	1905, 1918
	46.7°F (8.2°C)	48.4°F (9.1°C)	-1.7°F (-0.9°C)	124th Warmest	Warmest since: 1917	2001, 2002, 2019
	Ties: 1905
Oct 1913–Sep 1918 60-Month	47.3°F (8.5°C)	48.4°F (9.1°C)	-1.1°F (-0.6°C)	6th Coolest	Coolest since: 1908	1905, 1906
Oct 1913–Sep 1918 60-Month	47.3°F (8.5°C)	48.4°F (9.1°C)	-1.1°F (-0.6°C)	118th Warmest	Warmest since: 1917	2002

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on February 2, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings