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 8. Southwest

Average Temperature Rankings, August 1981

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
August 1981 1-Month	74.6°F (23.7°C)	76.0°F (24.4°C)	-1.4°F (-0.7°C)	30th Coolest	Coolest since: 1976	1915
	74.6°F (23.7°C)	76.0°F (24.4°C)	-1.4°F (-0.7°C)	99th Warmest	Warmest since: 1980	1936
	Ties: 1912, 1969, 1972
Jul–Aug 1981 2-Month	76.2°F (24.6°C)	76.9°F (24.9°C)	-0.7°F (-0.3°C)	39th Coolest	Coolest since: 1979	1967
	76.2°F (24.6°C)	76.9°F (24.9°C)	-0.7°F (-0.3°C)	90th Warmest	Warmest since: 1980	1936
	Ties: 1911, 1951, 1975, 1989
Jun–Aug 1981 3-Month	75.9°F (24.4°C)	75.9°F (24.4°C)	0.0°F (0.0°C)	62nd Coolest	Coolest since: 1979	1915, 1927
	75.9°F (24.4°C)	75.9°F (24.4°C)	0.0°F (0.0°C)	67th Warmest	Warmest since: 1980	1936
	Ties: 1968
May–Aug 1981 4-Month	72.0°F (22.2°C)	73.2°F (22.9°C)	-1.2°F (-0.7°C)	21st Coolest	Coolest since: 1976	1967
	72.0°F (22.2°C)	73.2°F (22.9°C)	-1.2°F (-0.7°C)	108th Warmest	Warmest since: 1980	1936
	Ties: 1903, 1960, 1974, 1990, 1994
Apr–Aug 1981 5-Month	70.0°F (21.1°C)	69.6°F (20.9°C)	0.4°F (0.2°C)	75th Coolest	Coolest since: 1979	1907
	70.0°F (21.1°C)	69.6°F (20.9°C)	0.4°F (0.2°C)	54th Warmest	Warmest since: 1980	2010
	Ties: 1931
Mar–Aug 1981 6-Month	65.8°F (18.8°C)	65.5°F (18.6°C)	0.3°F (0.2°C)	73rd Coolest	Coolest since: 1979	1904
	65.8°F (18.8°C)	65.5°F (18.6°C)	0.3°F (0.2°C)	56th Warmest	Warmest since: 1980	2012
	Ties: 1919, 1932, 1957, 2019
Feb–Aug 1981 7-Month	61.7°F (16.5°C)	61.1°F (16.2°C)	0.6°F (0.3°C)	83rd Coolest	Coolest since: 1980	1904
	61.7°F (16.5°C)	61.1°F (16.2°C)	0.6°F (0.3°C)	46th Warmest	Warmest since: 1977	2012
	Ties: 1956, 1988, 2019
Jan–Aug 1981 8-Month	57.7°F (14.3°C)	57.3°F (14.1°C)	0.4°F (0.2°C)	71st Coolest	Coolest since: 1980	1912
	57.7°F (14.3°C)	57.3°F (14.1°C)	0.4°F (0.2°C)	58th Warmest	Warmest since: 1976	2012
	Ties: 1983, 2004, 2021
Dec 1980–Aug 1981 9-Month	55.3°F (12.9°C)	54.8°F (12.7°C)	0.5°F (0.2°C)	74th Coolest	Coolest since: 1980	1904
	55.3°F (12.9°C)	54.8°F (12.7°C)	0.5°F (0.2°C)	54th Warmest	Warmest since: 1976	2012
	Ties: 1943, 1972, 1974
Nov 1980–Aug 1981 10-Month	54.2°F (12.3°C)	53.8°F (12.1°C)	0.4°F (0.2°C)	71st Coolest	Coolest since: 1980	1904
	54.2°F (12.3°C)	53.8°F (12.1°C)	0.4°F (0.2°C)	57th Warmest	Warmest since: 1976	2012
	Ties: 1944, 1959
Oct 1980–Aug 1981 11-Month	54.2°F (12.3°C)	54.1°F (12.3°C)	0.1°F (0.0°C)	56th Coolest	Coolest since: 1980	1904
	54.2°F (12.3°C)	54.1°F (12.3°C)	0.1°F (0.0°C)	72nd Warmest	Warmest since: 1976	2012
	Ties: 1900, 1950, 1985, 2013
Sep 1980–Aug 1981 12-Month	55.6°F (13.1°C)	55.4°F (13.0°C)	0.2°F (0.1°C)	66th Coolest	Coolest since: 1980	1904
	55.6°F (13.1°C)	55.4°F (13.0°C)	0.2°F (0.1°C)	62nd Warmest	Warmest since: 1976	2012
	Ties: 1959
Mar 1980–Aug 1981 18-Month	59.1°F (15.1°C)	58.8°F (14.9°C)	0.3°F (0.2°C)	73rd Coolest	Coolest since: 1980	1904
	59.1°F (15.1°C)	58.8°F (14.9°C)	0.3°F (0.2°C)	55th Warmest	Warmest since: 1974	2012
	Ties: 1898, 1911, 1972
Sep 1979–Aug 1981 24-Month	55.4°F (13.0°C)	55.4°F (13.0°C)	0.0°F (0.0°C)	57th Coolest	Coolest since: 1980	1979
	55.4°F (13.0°C)	55.4°F (13.0°C)	0.0°F (0.0°C)	70th Warmest	Warmest since: 1975	2017
	Ties: 1937, 1948, 1989, 1996
Sep 1978–Aug 1981 36-Month	54.6°F (12.6°C)	55.3°F (12.9°C)	-0.7°F (-0.3°C)	17th Coolest	Coolest since: 1980	1979
	54.6°F (12.6°C)	55.3°F (12.9°C)	-0.7°F (-0.3°C)	109th Warmest	Warmest since: 1977	2018
	Ties: 1917, 1961, 1963, 1984
Sep 1977–Aug 1981 48-Month	54.2°F (12.3°C)	55.4°F (13.0°C)	-1.2°F (-0.7°C)	6th Coolest	Coolest since: 1980	1980
	54.2°F (12.3°C)	55.4°F (13.0°C)	-1.2°F (-0.7°C)	119th Warmest	Warmest since: 1978	2019
	Ties: 1970, 1971
Sep 1976–Aug 1981 60-Month	54.1°F (12.3°C)	55.4°F (13.0°C)	-1.3°F (-0.7°C)	2nd Coolest	Coolest since: 1980	1906
	54.1°F (12.3°C)	55.4°F (13.0°C)	-1.3°F (-0.7°C)	122nd Warmest	Warmest since: 1980	2020
	Ties: 1979, 1980, 1982

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published November 2022, retrieved on November 29, 2022 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings