Statewide 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

Average Temperature Rankings, July 1991

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Record Coolest
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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
July 1991 1-Month	76.3°F (24.6°C)	75.6°F (24.2°C)	0.7°F (0.4°C)	89th Coolest	Coolest since: 1990	2009, 2014
	76.3°F (24.6°C)	75.6°F (24.2°C)	0.7°F (0.4°C)	40th Warmest	Warmest since: 1988	1936
	Ties: 1923, 1938, 2005
Jun–Jul 1991 2-Month	75.7°F (24.3°C)	73.5°F (23.1°C)	2.2°F (1.2°C)	111th Coolest	Coolest since: 1990	1915, 1958
	75.7°F (24.3°C)	73.5°F (23.1°C)	2.2°F (1.2°C)	18th Warmest	Warmest since: 1987	1934
	Ties: 2005
May–Jul 1991 3-Month	73.3°F (22.9°C)	69.7°F (20.9°C)	3.6°F (2.0°C)	123rd Coolest	Coolest since: 1990	1924
May–Jul 1991 3-Month	73.3°F (22.9°C)	69.7°F (20.9°C)	3.6°F (2.0°C)	6th Warmest	Warmest since: 1987	1934
Apr–Jul 1991 4-Month	69.0°F (20.6°C)	65.2°F (18.4°C)	3.8°F (2.2°C)	126th Coolest	Coolest since: 1990	1907
Apr–Jul 1991 4-Month	69.0°F (20.6°C)	65.2°F (18.4°C)	3.8°F (2.2°C)	3rd Warmest	Warmest since: 1934	1934
Mar–Jul 1991 5-Month	64.0°F (17.8°C)	60.1°F (15.6°C)	3.9°F (2.2°C)	125th Coolest	Coolest since: 1990	1960
Mar–Jul 1991 5-Month	64.0°F (17.8°C)	60.1°F (15.6°C)	3.9°F (2.2°C)	4th Warmest	Warmest since: 1977	2012
Feb–Jul 1991 6-Month	59.0°F (15.0°C)	55.0°F (12.8°C)	4.0°F (2.2°C)	126th Coolest	Coolest since: 1990	1947
Feb–Jul 1991 6-Month	59.0°F (15.0°C)	55.0°F (12.8°C)	4.0°F (2.2°C)	3rd Warmest	Warmest since: 1921	2012
Jan–Jul 1991 7-Month	53.9°F (12.2°C)	50.7°F (10.4°C)	3.2°F (1.8°C)	122nd Coolest	Coolest since: 1990	1912
Jan–Jul 1991 7-Month	53.9°F (12.2°C)	50.7°F (10.4°C)	3.2°F (1.8°C)	7th Warmest	Warmest since: 1987	2012
Dec 1990–Jul 1991 8-Month	51.0°F (10.6°C)	48.1°F (8.9°C)	2.9°F (1.7°C)	121st Coolest	Coolest since: 1990	1904
Dec 1990–Jul 1991 8-Month	51.0°F (10.6°C)	48.1°F (8.9°C)	2.9°F (1.7°C)	7th Warmest	Warmest since: 1987	2012
Nov 1990–Jul 1991 9-Month	50.5°F (10.3°C)	47.2°F (8.4°C)	3.3°F (1.9°C)	121st Coolest	Coolest since: 1990	1904
Nov 1990–Jul 1991 9-Month	50.5°F (10.3°C)	47.2°F (8.4°C)	3.3°F (1.9°C)	7th Warmest	Warmest since: 1932	2012
Oct 1990–Jul 1991 10-Month	50.7°F (10.4°C)	48.0°F (8.9°C)	2.7°F (1.5°C)	121st Coolest	Coolest since: 1990	1904
	50.7°F (10.4°C)	48.0°F (8.9°C)	2.7°F (1.5°C)	7th Warmest	Warmest since: 1932	2012
	Ties: 1999, 2000
Sep 1990–Jul 1991 11-Month	52.3°F (11.3°C)	49.7°F (9.8°C)	2.6°F (1.5°C)	121st Coolest	Coolest since: 1990	1904
	52.3°F (11.3°C)	49.7°F (9.8°C)	2.6°F (1.5°C)	7th Warmest	Warmest since: 1932	2012
	Ties: 2006
Aug 1990–Jul 1991 12-Month	54.0°F (12.2°C)	51.6°F (10.9°C)	2.4°F (1.3°C)	119th Coolest	Coolest since: 1990	1904
Aug 1990–Jul 1991 12-Month	54.0°F (12.2°C)	51.6°F (10.9°C)	2.4°F (1.3°C)	9th Warmest	Warmest since: 1932	2012
Feb 1990–Jul 1991 18-Month	54.7°F (12.6°C)	52.7°F (11.5°C)	2.0°F (1.1°C)	115th Coolest	Coolest since: 1990	1918
	54.7°F (12.6°C)	52.7°F (11.5°C)	2.0°F (1.1°C)	13th Warmest	Warmest since: 1987	2012
	Ties: 2002
Aug 1989–Jul 1991 24-Month	52.9°F (11.6°C)	51.6°F (10.9°C)	1.3°F (0.7°C)	108th Coolest	Coolest since: 1990	1905
	52.9°F (11.6°C)	51.6°F (10.9°C)	1.3°F (0.7°C)	19th Warmest	Warmest since: 1988	2017
	Ties: 1934, 1987, 1988, 2016, 2021
Aug 1988–Jul 1991 36-Month	52.6°F (11.4°C)	51.6°F (10.9°C)	1.0°F (0.5°C)	101st Coolest	Coolest since: 1990	1979
	52.6°F (11.4°C)	51.6°F (10.9°C)	1.0°F (0.5°C)	25th Warmest	Warmest since: 1989	2018
	Ties: 1935, 1939, 1987, 1989, 2020, 2021
Aug 1987–Jul 1991 48-Month	52.5°F (11.4°C)	51.6°F (10.9°C)	0.9°F (0.5°C)	97th Coolest	Coolest since: 1990	1905, 1980
	52.5°F (11.4°C)	51.6°F (10.9°C)	0.9°F (0.5°C)	28th Warmest	Warmest since: 1989	2019
	Ties: 1924, 1988, 1989, 2004, 2014
Aug 1986–Jul 1991 60-Month	52.7°F (11.5°C)	51.6°F (10.9°C)	1.1°F (0.6°C)	108th Coolest	Coolest since: 1990	1906
	52.7°F (11.5°C)	51.6°F (10.9°C)	1.1°F (0.6°C)	16th Warmest	Warmest since: 1957	2020
	Ties: 1936, 1956, 2001, 2004, 2010, 2016, 2018

Citing This Page

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