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 5. East

Average Temperature Rankings, July 1991

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
July 1991 1-Month	76.0°F (24.4°C)	74.4°F (23.6°C)	1.6°F (0.8°C)	96th Coolest	Coolest since: 1990	2014
July 1991 1-Month	76.0°F (24.4°C)	74.4°F (23.6°C)	1.6°F (0.8°C)	33rd Warmest	Warmest since: 1988	1936
Jun–Jul 1991 2-Month	75.6°F (24.2°C)	72.5°F (22.5°C)	3.1°F (1.7°C)	121st Coolest	Coolest since: 1990	1958
	75.6°F (24.2°C)	72.5°F (22.5°C)	3.1°F (1.7°C)	8th Warmest	Warmest since: 1954	1934
	Ties: 1931
May–Jul 1991 3-Month	73.2°F (22.9°C)	68.6°F (20.3°C)	4.6°F (2.6°C)	127th Coolest	Coolest since: 1990	1924
May–Jul 1991 3-Month	73.2°F (22.9°C)	68.6°F (20.3°C)	4.6°F (2.6°C)	2nd Warmest	Warmest since: 1934	1934
Apr–Jul 1991 4-Month	68.6°F (20.3°C)	63.9°F (17.7°C)	4.7°F (2.6°C)	128th Coolest	Coolest since: 1990	1907
Apr–Jul 1991 4-Month	68.6°F (20.3°C)	63.9°F (17.7°C)	4.7°F (2.6°C)	1st Warmest	Warmest to Date	1991
Mar–Jul 1991 5-Month	63.3°F (17.4°C)	58.8°F (14.9°C)	4.5°F (2.5°C)	126th Coolest	Coolest since: 1990	1960
Mar–Jul 1991 5-Month	63.3°F (17.4°C)	58.8°F (14.9°C)	4.5°F (2.5°C)	3rd Warmest	Warmest since: 1921	2012
Feb–Jul 1991 6-Month	58.2°F (14.6°C)	53.6°F (12.0°C)	4.6°F (2.6°C)	126th Coolest	Coolest since: 1990	1904, 1947
Feb–Jul 1991 6-Month	58.2°F (14.6°C)	53.6°F (12.0°C)	4.6°F (2.6°C)	3rd Warmest	Warmest since: 1921	2012
Jan–Jul 1991 7-Month	53.1°F (11.7°C)	49.3°F (9.6°C)	3.8°F (2.1°C)	124th Coolest	Coolest since: 1990	1912
Jan–Jul 1991 7-Month	53.1°F (11.7°C)	49.3°F (9.6°C)	3.8°F (2.1°C)	5th Warmest	Warmest since: 1921	2012
Dec 1990–Jul 1991 8-Month	50.2°F (10.1°C)	46.7°F (8.2°C)	3.5°F (1.9°C)	122nd Coolest	Coolest since: 1990	1904
	50.2°F (10.1°C)	46.7°F (8.2°C)	3.5°F (1.9°C)	6th Warmest	Warmest since: 1987	2012
	Ties: 1987
Nov 1990–Jul 1991 9-Month	49.8°F (9.9°C)	45.9°F (7.7°C)	3.9°F (2.2°C)	124th Coolest	Coolest since: 1990	1904
	49.8°F (9.9°C)	45.9°F (7.7°C)	3.9°F (2.2°C)	4th Warmest	Warmest since: 1921	2012
	Ties: 1921
Oct 1990–Jul 1991 10-Month	50.0°F (10.0°C)	46.7°F (8.2°C)	3.3°F (1.8°C)	122nd Coolest	Coolest since: 1990	1904
Oct 1990–Jul 1991 10-Month	50.0°F (10.0°C)	46.7°F (8.2°C)	3.3°F (1.8°C)	6th Warmest	Warmest since: 1932	2012
Sep 1990–Jul 1991 11-Month	51.5°F (10.8°C)	48.3°F (9.1°C)	3.2°F (1.7°C)	121st Coolest	Coolest since: 1990	1904
Sep 1990–Jul 1991 11-Month	51.5°F (10.8°C)	48.3°F (9.1°C)	3.2°F (1.7°C)	7th Warmest	Warmest since: 1932	2012
Aug 1990–Jul 1991 12-Month	53.1°F (11.7°C)	50.3°F (10.2°C)	2.8°F (1.5°C)	121st Coolest	Coolest since: 1990	1904
	53.1°F (11.7°C)	50.3°F (10.2°C)	2.8°F (1.5°C)	7th Warmest	Warmest since: 1932	2012
	Ties: 2006
Feb 1990–Jul 1991 18-Month	53.7°F (12.1°C)	51.4°F (10.8°C)	2.3°F (1.3°C)	120th Coolest	Coolest since: 1990	1918
	53.7°F (12.1°C)	51.4°F (10.8°C)	2.3°F (1.3°C)	8th Warmest	Warmest since: 1954	2012, 2017
	Ties: 1922, 1954
Aug 1989–Jul 1991 24-Month	51.9°F (11.1°C)	50.3°F (10.2°C)	1.6°F (0.9°C)	111th Coolest	Coolest since: 1990	1905
	51.9°F (11.1°C)	50.3°F (10.2°C)	1.6°F (0.9°C)	16th Warmest	Warmest since: 1988	2017
	Ties: 1988, 2022
Aug 1988–Jul 1991 36-Month	51.6°F (10.9°C)	50.3°F (10.2°C)	1.3°F (0.7°C)	105th Coolest	Coolest since: 1990	1904, 1905, 1906
	51.6°F (10.9°C)	50.3°F (10.2°C)	1.3°F (0.7°C)	21st Warmest	Warmest since: 1988	2018
	Ties: 1954, 1987, 1988, 2004
Aug 1987–Jul 1991 48-Month	51.5°F (10.8°C)	50.3°F (10.2°C)	1.2°F (0.6°C)	104th Coolest	Coolest since: 1990	1905
	51.5°F (10.8°C)	50.3°F (10.2°C)	1.2°F (0.6°C)	21st Warmest	Warmest since: 1988	2019
	Ties: 1988, 2009, 2017
Aug 1986–Jul 1991 60-Month	51.7°F (10.9°C)	50.3°F (10.2°C)	1.4°F (0.7°C)	113th Coolest	Coolest since: 1990	1906
	51.7°F (10.9°C)	50.3°F (10.2°C)	1.4°F (0.7°C)	11th Warmest	Warmest since: 1935	2020
	Ties: 2007, 2013

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on February 1, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings