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, July 1989

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
July 1989 1-Month	76.9°F (24.9°C)	77.9°F (25.5°C)	-1.0°F (-0.6°C)	43rd Coolest	Coolest since: 1984	2014
	76.9°F (24.9°C)	77.9°F (25.5°C)	-1.0°F (-0.6°C)	86th Warmest	Warmest since: 1988	2012
	Ties: 1951
Jun–Jul 1989 2-Month	74.6°F (23.7°C)	76.0°F (24.4°C)	-1.4°F (-0.7°C)	31st Coolest	Coolest since: 1985	1904, 1927
	74.6°F (23.7°C)	76.0°F (24.4°C)	-1.4°F (-0.7°C)	98th Warmest	Warmest since: 1988	1934
	Ties: 1900, 1908, 1920, 1996
May–Jul 1989 3-Month	70.4°F (21.3°C)	72.3°F (22.4°C)	-1.9°F (-1.1°C)	17th Coolest	Coolest since: 1976	1924
	70.4°F (21.3°C)	72.3°F (22.4°C)	-1.9°F (-1.1°C)	112th Warmest	Warmest since: 1988	1934
	Ties: 1929, 2003
Apr–Jul 1989 4-Month	66.8°F (19.3°C)	68.0°F (20.0°C)	-1.2°F (-0.7°C)	17th Coolest	Coolest since: 1983	1907
	66.8°F (19.3°C)	68.0°F (20.0°C)	-1.2°F (-0.7°C)	112th Warmest	Warmest since: 1988	2012
	Ties: 1897, 1927, 1940, 1979
Mar–Jul 1989 5-Month	62.4°F (16.9°C)	63.3°F (17.4°C)	-0.9°F (-0.5°C)	31st Coolest	Coolest since: 1984	1960
	62.4°F (16.9°C)	63.3°F (17.4°C)	-0.9°F (-0.5°C)	98th Warmest	Warmest since: 1988	2012
	Ties: 1975, 1978
Feb–Jul 1989 6-Month	56.9°F (13.8°C)	58.6°F (14.8°C)	-1.7°F (-1.0°C)	15th Coolest	Coolest since: 1979	1947
	56.9°F (13.8°C)	58.6°F (14.8°C)	-1.7°F (-1.0°C)	114th Warmest	Warmest since: 1988	2012
	Ties: 1907, 1923
Jan–Jul 1989 7-Month	54.4°F (12.4°C)	54.6°F (12.6°C)	-0.2°F (-0.2°C)	53rd Coolest	Coolest since: 1985	1912
	54.4°F (12.4°C)	54.6°F (12.6°C)	-0.2°F (-0.2°C)	76th Warmest	Warmest since: 1988	2012
	Ties: 1945, 1950, 1972, 2015
Dec 1988–Jul 1989 8-Month	52.2°F (11.2°C)	52.2°F (11.2°C)	0.0°F (0.0°C)	59th Coolest	Coolest since: 1985	1978
Dec 1988–Jul 1989 8-Month	52.2°F (11.2°C)	52.2°F (11.2°C)	0.0°F (0.0°C)	69th Warmest	Warmest since: 1988	2012
Nov 1988–Jul 1989 9-Month	51.4°F (10.8°C)	51.3°F (10.7°C)	0.1°F (0.1°C)	54th Coolest	Coolest since: 1985	1904, 1912
	51.4°F (10.8°C)	51.3°F (10.7°C)	0.1°F (0.1°C)	74th Warmest	Warmest since: 1988	2012
	Ties: 1903, 1916, 1923, 1975
Oct 1988–Jul 1989 10-Month	51.5°F (10.8°C)	52.0°F (11.1°C)	-0.5°F (-0.3°C)	44th Coolest	Coolest since: 1984	1904, 1912
	51.5°F (10.8°C)	52.0°F (11.1°C)	-0.5°F (-0.3°C)	84th Warmest	Warmest since: 1988	2012
	Ties: 1927, 1929, 1973
Sep 1988–Jul 1989 11-Month	53.1°F (11.7°C)	53.5°F (11.9°C)	-0.4°F (-0.2°C)	44th Coolest	Coolest since: 1984	1904
	53.1°F (11.7°C)	53.5°F (11.9°C)	-0.4°F (-0.2°C)	84th Warmest	Warmest since: 1988	2012
	Ties: 1971
Aug 1988–Jul 1989 12-Month	55.3°F (12.9°C)	55.4°F (13.0°C)	-0.1°F (-0.1°C)	54th Coolest	Coolest since: 1984	1904
	55.3°F (12.9°C)	55.4°F (13.0°C)	-0.1°F (-0.1°C)	74th Warmest	Warmest since: 1988	2012
	Ties: 1927
Feb 1988–Jul 1989 18-Month	56.4°F (13.6°C)	56.4°F (13.6°C)	0.0°F (0.0°C)	59th Coolest	Coolest since: 1985	1918, 1979
	56.4°F (13.6°C)	56.4°F (13.6°C)	0.0°F (0.0°C)	69th Warmest	Warmest since: 1988	2012
	Ties: 1945, 1952
Aug 1987–Jul 1989 24-Month	55.5°F (13.1°C)	55.4°F (13.0°C)	0.1°F (0.1°C)	67th Coolest	Coolest since: 1985	1979
	55.5°F (13.1°C)	55.4°F (13.0°C)	0.1°F (0.1°C)	60th Warmest	Warmest since: 1988	2017
	Ties: 1898, 1911, 1926, 1947
Aug 1986–Jul 1989 36-Month	55.8°F (13.2°C)	55.3°F (12.9°C)	0.5°F (0.3°C)	81st Coolest	Coolest since: 1986	1979
	55.8°F (13.2°C)	55.3°F (12.9°C)	0.5°F (0.3°C)	45th Warmest	Warmest since: 1988	2018
	Ties: 1942, 1950, 1976, 2003, 2016
Aug 1985–Jul 1989 48-Month	56.0°F (13.3°C)	55.3°F (12.9°C)	0.7°F (0.4°C)	91st Coolest	Coolest since: 1988	1980
	56.0°F (13.3°C)	55.3°F (12.9°C)	0.7°F (0.4°C)	34th Warmest	Warmest since: 1988	2019
	Ties: 1936, 1937, 1939, 1941, 1988, 1991, 1993, 2004, 2015
Aug 1984–Jul 1989 60-Month	55.9°F (13.3°C)	55.4°F (13.0°C)	0.5°F (0.3°C)	81st Coolest	Coolest since: 1988	1906, 1980
	55.9°F (13.3°C)	55.4°F (13.0°C)	0.5°F (0.3°C)	43rd Warmest	Warmest since: 1958	2020
	Ties: 1945, 1946, 1990, 1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on January 28, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings