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 1915

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1915 1-Month	69.2°F (20.7°C)	67.4°F (19.7°C)	1.8°F (1.0°C)	88th Coolest	Coolest since: 1914	1918
	69.2°F (20.7°C)	67.4°F (19.7°C)	1.8°F (1.0°C)	41st Warmest	Warmest since: 1911	1925
	Ties: 1980
Aug–Sep 1915 2-Month	68.6°F (20.3°C)	70.9°F (21.6°C)	-2.3°F (-1.3°C)	13th Coolest	Coolest since: 1902	1967
	68.6°F (20.3°C)	70.9°F (21.6°C)	-2.3°F (-1.3°C)	116th Warmest	Warmest since: 1914	1936
	Ties: 1982
Jul–Sep 1915 3-Month	70.2°F (21.2°C)	72.6°F (22.6°C)	-2.4°F (-1.4°C)	5th Coolest	Coolest since: 1915	1967
Jul–Sep 1915 3-Month	70.2°F (21.2°C)	72.6°F (22.6°C)	-2.4°F (-1.4°C)	124th Warmest	Warmest since: 1914	1936
Jun–Sep 1915 4-Month	70.0°F (21.1°C)	72.5°F (22.5°C)	-2.5°F (-1.4°C)	5th Coolest	Coolest since: 1915	1967
Jun–Sep 1915 4-Month	70.0°F (21.1°C)	72.5°F (22.5°C)	-2.5°F (-1.4°C)	124th Warmest	Warmest since: 1914	1936
May–Sep 1915 5-Month	68.2°F (20.1°C)	70.7°F (21.5°C)	-2.5°F (-1.4°C)	5th Coolest	Coolest since: 1907	1924
May–Sep 1915 5-Month	68.2°F (20.1°C)	70.7°F (21.5°C)	-2.5°F (-1.4°C)	124th Warmest	Warmest since: 1914	1936
Apr–Sep 1915 6-Month	66.5°F (19.2°C)	67.7°F (19.8°C)	-1.2°F (-0.6°C)	22nd Coolest	Coolest since: 1910	1907
	66.5°F (19.2°C)	67.7°F (19.8°C)	-1.2°F (-0.6°C)	107th Warmest	Warmest since: 1914	2010
	Ties: 1909, 1989
Mar–Sep 1915 7-Month	62.1°F (16.7°C)	64.0°F (17.8°C)	-1.9°F (-1.1°C)	7th Coolest	Coolest since: 1907	1924
	62.1°F (16.7°C)	64.0°F (17.8°C)	-1.9°F (-1.1°C)	122nd Warmest	Warmest since: 1914	2012
	Ties: 1951, 1960
Feb–Sep 1915 8-Month	59.0°F (15.0°C)	59.9°F (15.5°C)	-0.9°F (-0.5°C)	27th Coolest	Coolest since: 1912	1904, 1924
	59.0°F (15.0°C)	59.9°F (15.5°C)	-0.9°F (-0.5°C)	102nd Warmest	Warmest since: 1914	2012
	Ties: 1929, 1940, 1993
Jan–Sep 1915 9-Month	55.2°F (12.9°C)	56.4°F (13.6°C)	-1.2°F (-0.7°C)	24th Coolest	Coolest since: 1912	1979
	55.2°F (12.9°C)	56.4°F (13.6°C)	-1.2°F (-0.7°C)	105th Warmest	Warmest since: 1914	2012
	Ties: 1929, 1971, 1984
Dec 1914–Sep 1915 10-Month	52.2°F (11.2°C)	53.9°F (12.2°C)	-1.7°F (-1.0°C)	16th Coolest	Coolest since: 1912	1904
	52.2°F (11.2°C)	53.9°F (12.2°C)	-1.7°F (-1.0°C)	112th Warmest	Warmest since: 1914	2012
	Ties: 1940
Nov 1914–Sep 1915 11-Month	51.5°F (10.8°C)	52.9°F (11.6°C)	-1.4°F (-0.8°C)	19th Coolest	Coolest since: 1912	1904
	51.5°F (10.8°C)	52.9°F (11.6°C)	-1.4°F (-0.8°C)	109th Warmest	Warmest since: 1914	2012
	Ties: 1960, 1970
Oct 1914–Sep 1915 12-Month	52.0°F (11.1°C)	53.1°F (11.7°C)	-1.1°F (-0.6°C)	25th Coolest	Coolest since: 1912	1904
	52.0°F (11.1°C)	53.1°F (11.7°C)	-1.1°F (-0.6°C)	103rd Warmest	Warmest since: 1914	2012
	Ties: 1968, 1994
Apr 1914–Sep 1915 18-Month	57.9°F (14.4°C)	57.9°F (14.4°C)	0.0°F (0.0°C)	51st Coolest	Coolest since: 1912	1918
	57.9°F (14.4°C)	57.9°F (14.4°C)	0.0°F (0.0°C)	77th Warmest	Warmest since: 1914	2012
	Ties: 1897, 1930, 1952, 1959, 1985
Oct 1913–Sep 1915 24-Month	53.1°F (11.7°C)	53.0°F (11.7°C)	0.1°F (0.0°C)	55th Coolest	Coolest since: 1913	1979
	53.1°F (11.7°C)	53.0°F (11.7°C)	0.1°F (0.0°C)	72nd Warmest	Warmest since: 1914	2017
	Ties: 1926, 1940, 1941, 1945, 1984, 1990
Oct 1912–Sep 1915 36-Month	53.4°F (11.9°C)	53.0°F (11.7°C)	0.4°F (0.2°C)	77th Coolest	Coolest since: 1914	1979
	53.4°F (11.9°C)	53.0°F (11.7°C)	0.4°F (0.2°C)	49th Warmest	Warmest to Date	2018
	Ties: 1931, 1940, 1976, 1990
Oct 1911–Sep 1915 48-Month	52.7°F (11.5°C)	53.1°F (11.7°C)	-0.4°F (-0.2°C)	34th Coolest	Coolest since: 1913	1980
	52.7°F (11.5°C)	53.1°F (11.7°C)	-0.4°F (-0.2°C)	91st Warmest	Warmest since: 1914	2019
	Ties: 1909, 1917, 1928, 1930, 1960, 1965, 1985
Oct 1910–Sep 1915 60-Month	52.9°F (11.6°C)	53.0°F (11.7°C)	-0.1°F (-0.1°C)	46th Coolest	Coolest since: 1914	1982
	52.9°F (11.6°C)	53.0°F (11.7°C)	-0.1°F (-0.1°C)	78th Warmest	Warmest since: 1914	2020
	Ties: 1914, 1921, 1926

Citing This Page

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