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, August 1987

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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
August 1987 1-Month	74.3°F (23.5°C)	73.4°F (23.0°C)	0.9°F (0.5°C)	83rd Coolest	Coolest since: 1986	1915
	74.3°F (23.5°C)	73.4°F (23.0°C)	0.9°F (0.5°C)	46th Warmest	Warmest since: 1984	1947
	Ties: 1928
Jul–Aug 1987 2-Month	75.8°F (24.3°C)	74.5°F (23.6°C)	1.3°F (0.7°C)	101st Coolest	Coolest since: 1986	1915
	75.8°F (24.3°C)	74.5°F (23.6°C)	1.3°F (0.7°C)	28th Warmest	Warmest since: 1983	1936
	Ties: 1941, 1949, 1959, 1993, 2007
Jun–Aug 1987 3-Month	75.4°F (24.1°C)	73.5°F (23.1°C)	1.9°F (1.0°C)	107th Coolest	Coolest since: 1986	1915
	75.4°F (24.1°C)	73.5°F (23.1°C)	1.9°F (1.0°C)	22nd Warmest	Warmest since: 1983	1936
	Ties: 1991, 2016
May–Aug 1987 4-Month	73.6°F (23.1°C)	70.6°F (21.4°C)	3.0°F (1.7°C)	123rd Coolest	Coolest since: 1986	1915
May–Aug 1987 4-Month	73.6°F (23.1°C)	70.6°F (21.4°C)	3.0°F (1.7°C)	6th Warmest	Warmest since: 1936	1936
Apr–Aug 1987 5-Month	69.5°F (20.8°C)	66.8°F (19.3°C)	2.7°F (1.5°C)	123rd Coolest	Coolest since: 1986	1907
Apr–Aug 1987 5-Month	69.5°F (20.8°C)	66.8°F (19.3°C)	2.7°F (1.5°C)	6th Warmest	Warmest since: 1936	1934
Mar–Aug 1987 6-Month	65.3°F (18.5°C)	62.3°F (16.8°C)	3.0°F (1.7°C)	123rd Coolest	Coolest since: 1986	1950, 1960
	65.3°F (18.5°C)	62.3°F (16.8°C)	3.0°F (1.7°C)	6th Warmest	Warmest since: 1977	2012
	Ties: 1936
Feb–Aug 1987 7-Month	61.1°F (16.2°C)	57.6°F (14.2°C)	3.5°F (2.0°C)	125th Coolest	Coolest since: 1986	1904
Feb–Aug 1987 7-Month	61.1°F (16.2°C)	57.6°F (14.2°C)	3.5°F (2.0°C)	4th Warmest	Warmest since: 1921	2012
Jan–Aug 1987 8-Month	56.8°F (13.8°C)	53.6°F (12.0°C)	3.2°F (1.8°C)	126th Coolest	Coolest since: 1986	1912
	56.8°F (13.8°C)	53.6°F (12.0°C)	3.2°F (1.8°C)	3rd Warmest	Warmest since: 1921	2012
	Ties: 1998, 2017
Dec 1986–Aug 1987 9-Month	54.0°F (12.2°C)	50.9°F (10.5°C)	3.1°F (1.7°C)	124th Coolest	Coolest since: 1986	1904
	54.0°F (12.2°C)	50.9°F (10.5°C)	3.1°F (1.7°C)	4th Warmest	Warmest since: 1921	2012
	Ties: 1998
Nov 1986–Aug 1987 10-Month	52.4°F (11.3°C)	49.9°F (9.9°C)	2.5°F (1.4°C)	118th Coolest	Coolest since: 1986	1904
	52.4°F (11.3°C)	49.9°F (9.9°C)	2.5°F (1.4°C)	10th Warmest	Warmest since: 1932	2012
	Ties: 2005, 2006
Oct 1986–Aug 1987 11-Month	52.6°F (11.4°C)	50.3°F (10.2°C)	2.3°F (1.2°C)	115th Coolest	Coolest since: 1986	1904
	52.6°F (11.4°C)	50.3°F (10.2°C)	2.3°F (1.2°C)	13th Warmest	Warmest since: 1954	2012
	Ties: 1999
Sep 1986–Aug 1987 12-Month	54.0°F (12.2°C)	51.6°F (10.9°C)	2.4°F (1.3°C)	118th Coolest	Coolest since: 1986	1904
Sep 1986–Aug 1987 12-Month	54.0°F (12.2°C)	51.6°F (10.9°C)	2.4°F (1.3°C)	10th Warmest	Warmest since: 1932	2012
Mar 1986–Aug 1987 18-Month	57.3°F (14.1°C)	55.2°F (12.9°C)	2.1°F (1.2°C)	121st Coolest	Coolest since: 1986	1904
Mar 1986–Aug 1987 18-Month	57.3°F (14.1°C)	55.2°F (12.9°C)	2.1°F (1.2°C)	7th Warmest	Warmest since: 1932	2012
Sep 1985–Aug 1987 24-Month	53.1°F (11.7°C)	51.6°F (10.9°C)	1.5°F (0.8°C)	110th Coolest	Coolest since: 1986	1905
	53.1°F (11.7°C)	51.6°F (10.9°C)	1.5°F (0.8°C)	17th Warmest	Warmest since: 1955	2017
	Ties: 2022
Sep 1984–Aug 1987 36-Month	52.6°F (11.4°C)	51.6°F (10.9°C)	1.0°F (0.5°C)	101st Coolest	Coolest since: 1986	1979
	52.6°F (11.4°C)	51.6°F (10.9°C)	1.0°F (0.5°C)	25th Warmest	Warmest since: 1956	2018
	Ties: 1922, 1935, 2004, 2005, 2021
Sep 1983–Aug 1987 48-Month	52.1°F (11.2°C)	51.6°F (10.9°C)	0.5°F (0.3°C)	84th Coolest	Coolest since: 1986	1905
	52.1°F (11.2°C)	51.6°F (10.9°C)	0.5°F (0.3°C)	41st Warmest	Warmest since: 1976	2019
	Ties: 1937, 1939, 1940, 1943, 1949, 1954, 1976, 1999, 2011
Sep 1982–Aug 1987 60-Month	52.4°F (11.3°C)	51.6°F (10.9°C)	0.8°F (0.4°C)	94th Coolest	Coolest since: 1986	1906
	52.4°F (11.3°C)	51.6°F (10.9°C)	0.8°F (0.4°C)	30th Warmest	Warmest since: 1957	2020
	Ties: 1925, 1932, 1955, 1989, 1990, 1992, 2000

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published May 2023, retrieved on June 6, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings