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 1991

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1991 1-Month	68.0°F (20.0°C)	67.4°F (19.7°C)	0.6°F (0.3°C)	71st Coolest	Coolest since: 1989	1918
	68.0°F (20.0°C)	67.4°F (19.7°C)	0.6°F (0.3°C)	58th Warmest	Warmest since: 1990	1925
	Ties: 1947
Aug–Sep 1991 2-Month	71.8°F (22.1°C)	70.8°F (21.6°C)	1.0°F (0.5°C)	88th Coolest	Coolest since: 1990	1967
	71.8°F (22.1°C)	70.8°F (21.6°C)	1.0°F (0.5°C)	41st Warmest	Warmest since: 1988	1936
	Ties: 1978
Jul–Sep 1991 3-Month	73.6°F (23.1°C)	72.7°F (22.6°C)	0.9°F (0.5°C)	89th Coolest	Coolest since: 1990	1967
	73.6°F (23.1°C)	72.7°F (22.6°C)	0.9°F (0.5°C)	40th Warmest	Warmest since: 1988	1936
	Ties: 1935, 1973, 2011
Jun–Sep 1991 4-Month	74.1°F (23.4°C)	72.5°F (22.5°C)	1.6°F (0.9°C)	104th Coolest	Coolest since: 1990	1967
	74.1°F (23.4°C)	72.5°F (22.5°C)	1.6°F (0.9°C)	25th Warmest	Warmest since: 1988	1936
	Ties: 1911, 1998
May–Sep 1991 5-Month	73.3°F (22.9°C)	70.7°F (21.5°C)	2.6°F (1.4°C)	121st Coolest	Coolest since: 1990	1924
May–Sep 1991 5-Month	73.3°F (22.9°C)	70.7°F (21.5°C)	2.6°F (1.4°C)	8th Warmest	Warmest since: 1936	1936
Apr–Sep 1991 6-Month	70.7°F (21.5°C)	67.8°F (19.9°C)	2.9°F (1.6°C)	126th Coolest	Coolest since: 1990	1907
Apr–Sep 1991 6-Month	70.7°F (21.5°C)	67.8°F (19.9°C)	2.9°F (1.6°C)	3rd Warmest	Warmest since: 1936	2010
Mar–Sep 1991 7-Month	67.1°F (19.5°C)	64.0°F (17.8°C)	3.1°F (1.7°C)	124th Coolest	Coolest since: 1990	1924
	67.1°F (19.5°C)	64.0°F (17.8°C)	3.1°F (1.7°C)	5th Warmest	Warmest since: 1936	2012
	Ties: 2007
Feb–Sep 1991 8-Month	63.2°F (17.3°C)	59.9°F (15.5°C)	3.3°F (1.8°C)	126th Coolest	Coolest since: 1990	1904, 1924
Feb–Sep 1991 8-Month	63.2°F (17.3°C)	59.9°F (15.5°C)	3.3°F (1.8°C)	3rd Warmest	Warmest since: 1921	2012
Jan–Sep 1991 9-Month	59.1°F (15.1°C)	56.3°F (13.5°C)	2.8°F (1.6°C)	123rd Coolest	Coolest since: 1990	1979
	59.1°F (15.1°C)	56.3°F (13.5°C)	2.8°F (1.6°C)	6th Warmest	Warmest since: 1954	2012
	Ties: 1933
Dec 1990–Sep 1991 10-Month	56.5°F (13.6°C)	53.8°F (12.1°C)	2.7°F (1.5°C)	120th Coolest	Coolest since: 1990	1904
Dec 1990–Sep 1991 10-Month	56.5°F (13.6°C)	53.8°F (12.1°C)	2.7°F (1.5°C)	8th Warmest	Warmest since: 1954	2012
Nov 1990–Sep 1991 11-Month	55.8°F (13.2°C)	52.8°F (11.6°C)	3.0°F (1.6°C)	123rd Coolest	Coolest since: 1990	1904
	55.8°F (13.2°C)	52.8°F (11.6°C)	3.0°F (1.6°C)	5th Warmest	Warmest since: 1921	2012
	Ties: 2017
Oct 1990–Sep 1991 12-Month	55.7°F (13.2°C)	53.1°F (11.7°C)	2.6°F (1.5°C)	120th Coolest	Coolest since: 1990	1904
Oct 1990–Sep 1991 12-Month	55.7°F (13.2°C)	53.1°F (11.7°C)	2.6°F (1.5°C)	8th Warmest	Warmest since: 1954	2012
Apr 1990–Sep 1991 18-Month	59.4°F (15.2°C)	57.9°F (14.4°C)	1.5°F (0.8°C)	109th Coolest	Coolest since: 1990	1918
	59.4°F (15.2°C)	57.9°F (14.4°C)	1.5°F (0.8°C)	19th Warmest	Warmest since: 1987	2012
	Ties: 1914, 1953, 1992
Oct 1989–Sep 1991 24-Month	54.7°F (12.6°C)	53.1°F (11.7°C)	1.6°F (0.9°C)	112th Coolest	Coolest since: 1990	1979
	54.7°F (12.6°C)	53.1°F (11.7°C)	1.6°F (0.9°C)	15th Warmest	Warmest since: 1955	2017
	Ties: 1992
Oct 1988–Sep 1991 36-Month	54.0°F (12.2°C)	53.1°F (11.7°C)	0.9°F (0.5°C)	97th Coolest	Coolest since: 1990	1979
	54.0°F (12.2°C)	53.1°F (11.7°C)	0.9°F (0.5°C)	29th Warmest	Warmest since: 1988	2018
	Ties: 1943, 1993, 2021
Oct 1987–Sep 1991 48-Month	53.9°F (12.2°C)	53.0°F (11.7°C)	0.9°F (0.5°C)	98th Coolest	Coolest since: 1990	1980
	53.9°F (12.2°C)	53.0°F (11.7°C)	0.9°F (0.5°C)	27th Warmest	Warmest since: 1989	2019
	Ties: 1936, 1944, 1954, 1989, 1992, 1993, 2017
Oct 1986–Sep 1991 60-Month	54.1°F (12.3°C)	53.0°F (11.7°C)	1.1°F (0.6°C)	105th Coolest	Coolest since: 1990	1982
	54.1°F (12.3°C)	53.0°F (11.7°C)	1.1°F (0.6°C)	19th Warmest	Warmest since: 1957	2020
	Ties: 1933, 2001, 2005

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on January 27, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings