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 1988

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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 1988 1-Month	77.5°F (25.3°C)	75.6°F (24.2°C)	1.9°F (1.1°C)	104th Coolest	Coolest since: 1987	2009, 2014
July 1988 1-Month	77.5°F (25.3°C)	75.6°F (24.2°C)	1.9°F (1.1°C)	25th Warmest	Warmest since: 1986	1936
Jun–Jul 1988 2-Month	75.6°F (24.2°C)	73.5°F (23.1°C)	2.1°F (1.1°C)	109th Coolest	Coolest since: 1986	1915, 1958
	75.6°F (24.2°C)	73.5°F (23.1°C)	2.1°F (1.1°C)	20th Warmest	Warmest since: 1987	1934
	Ties: 1911, 1913, 1983
May–Jul 1988 3-Month	71.9°F (22.2°C)	69.7°F (20.9°C)	2.2°F (1.3°C)	112th Coolest	Coolest since: 1986	1924
	71.9°F (22.2°C)	69.7°F (20.9°C)	2.2°F (1.3°C)	17th Warmest	Warmest since: 1987	1934
	Ties: 1952
Apr–Jul 1988 4-Month	66.9°F (19.4°C)	65.2°F (18.4°C)	1.7°F (1.0°C)	107th Coolest	Coolest since: 1985	1907
	66.9°F (19.4°C)	65.2°F (18.4°C)	1.7°F (1.0°C)	22nd Warmest	Warmest since: 1987	1934
	Ties: 1911, 2005
Mar–Jul 1988 5-Month	61.7°F (16.5°C)	60.1°F (15.6°C)	1.6°F (0.9°C)	111th Coolest	Coolest since: 1984	1960
	61.7°F (16.5°C)	60.1°F (15.6°C)	1.6°F (0.9°C)	18th Warmest	Warmest since: 1987	2012
	Ties: 1911, 1933, 1938, 2021
Feb–Jul 1988 6-Month	55.7°F (13.2°C)	55.0°F (12.8°C)	0.7°F (0.4°C)	82nd Coolest	Coolest since: 1985	1947
	55.7°F (13.2°C)	55.0°F (12.8°C)	0.7°F (0.4°C)	47th Warmest	Warmest since: 1987	2012
	Ties: 1944, 1974, 1992
Jan–Jul 1988 7-Month	51.1°F (10.6°C)	50.7°F (10.4°C)	0.4°F (0.2°C)	75th Coolest	Coolest since: 1985	1912
	51.1°F (10.6°C)	50.7°F (10.4°C)	0.4°F (0.2°C)	54th Warmest	Warmest since: 1987	2012
	Ties: 1908, 1956, 1957, 1995, 2022
Dec 1987–Jul 1988 8-Month	48.9°F (9.4°C)	48.1°F (8.9°C)	0.8°F (0.5°C)	83rd Coolest	Coolest since: 1986	1904
	48.9°F (9.4°C)	48.1°F (8.9°C)	0.8°F (0.5°C)	45th Warmest	Warmest since: 1987	2012
	Ties: 1973, 1981, 1986
Nov 1987–Jul 1988 9-Month	48.6°F (9.2°C)	47.2°F (8.4°C)	1.4°F (0.8°C)	95th Coolest	Coolest since: 1986	1904
Nov 1987–Jul 1988 9-Month	48.6°F (9.2°C)	47.2°F (8.4°C)	1.4°F (0.8°C)	33rd Warmest	Warmest since: 1987	2012
Oct 1987–Jul 1988 10-Month	48.6°F (9.2°C)	48.0°F (8.9°C)	0.6°F (0.3°C)	78th Coolest	Coolest since: 1985	1904
	48.6°F (9.2°C)	48.0°F (8.9°C)	0.6°F (0.3°C)	50th Warmest	Warmest since: 1987	2012
	Ties: 1935, 1985
Sep 1987–Jul 1988 11-Month	50.2°F (10.1°C)	49.7°F (9.8°C)	0.5°F (0.3°C)	80th Coolest	Coolest since: 1985	1904
	50.2°F (10.1°C)	49.7°F (9.8°C)	0.5°F (0.3°C)	48th Warmest	Warmest since: 1987	2012
	Ties: 1896, 1901, 1981, 2008
Aug 1987–Jul 1988 12-Month	52.2°F (11.2°C)	51.6°F (10.9°C)	0.6°F (0.3°C)	78th Coolest	Coolest since: 1986	1904
	52.2°F (11.2°C)	51.6°F (10.9°C)	0.6°F (0.3°C)	50th Warmest	Warmest since: 1987	2012
	Ties: 1896, 1911, 1986
Feb 1987–Jul 1988 18-Month	54.5°F (12.5°C)	52.7°F (11.5°C)	1.8°F (1.0°C)	111th Coolest	Coolest since: 1986	1918
	54.5°F (12.5°C)	52.7°F (11.5°C)	1.8°F (1.0°C)	17th Warmest	Warmest since: 1987	2012
	Ties: 2018
Aug 1986–Jul 1988 24-Month	52.9°F (11.6°C)	51.6°F (10.9°C)	1.3°F (0.7°C)	108th Coolest	Coolest since: 1987	1905
	52.9°F (11.6°C)	51.6°F (10.9°C)	1.3°F (0.7°C)	19th Warmest	Warmest since: 1987	2017
	Ties: 1934, 1987, 1991, 2016, 2021
Aug 1985–Jul 1988 36-Month	52.7°F (11.5°C)	51.6°F (10.9°C)	1.1°F (0.6°C)	103rd Coolest	Coolest since: 1987	1979
	52.7°F (11.5°C)	51.6°F (10.9°C)	1.1°F (0.6°C)	23rd Warmest	Warmest since: 1956	2018
	Ties: 1921
Aug 1984–Jul 1988 48-Month	52.5°F (11.4°C)	51.6°F (10.9°C)	0.9°F (0.5°C)	97th Coolest	Coolest since: 1987	1905, 1980
	52.5°F (11.4°C)	51.6°F (10.9°C)	0.9°F (0.5°C)	28th Warmest	Warmest since: 1957	2019
	Ties: 1924, 1989, 1991, 2004, 2014
Aug 1983–Jul 1988 60-Month	52.2°F (11.2°C)	51.6°F (10.9°C)	0.6°F (0.3°C)	82nd Coolest	Coolest since: 1986	1906
	52.2°F (11.2°C)	51.6°F (10.9°C)	0.6°F (0.3°C)	42nd Warmest	Warmest since: 1987	2020
	Ties: 1955, 1976, 1993, 1995, 2015

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2023, retrieved on March 31, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings