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 7. East Southeast

Average Temperature Rankings, September 1997

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1997 1-Month	67.3°F (19.6°C)	67.4°F (19.7°C)	-0.1°F (-0.1°C)	59th Coolest	Coolest since: 1996	1918
	67.3°F (19.6°C)	67.4°F (19.7°C)	-0.1°F (-0.1°C)	70th Warmest	Warmest since: 1991	1925
	Ties: 1901
Aug–Sep 1997 2-Month	69.6°F (20.9°C)	70.8°F (21.6°C)	-1.2°F (-0.7°C)	30th Coolest	Coolest since: 1994	1967
	69.6°F (20.9°C)	70.8°F (21.6°C)	-1.2°F (-0.7°C)	99th Warmest	Warmest since: 1996	1936
	Ties: 1927, 1942, 1969, 1979, 1993, 2014
Jul–Sep 1997 3-Month	71.7°F (22.1°C)	72.6°F (22.6°C)	-0.9°F (-0.5°C)	39th Coolest	Coolest since: 1996	1967
	71.7°F (22.1°C)	72.6°F (22.6°C)	-0.9°F (-0.5°C)	90th Warmest	Warmest since: 1995	1936
	Ties: 1910, 1971
Jun–Sep 1997 4-Month	71.6°F (22.0°C)	72.6°F (22.6°C)	-1.0°F (-0.6°C)	34th Coolest	Coolest since: 1992	1967
	71.6°F (22.0°C)	72.6°F (22.6°C)	-1.0°F (-0.6°C)	95th Warmest	Warmest since: 1996	1936
	Ties: 1963, 1989, 2000
May–Sep 1997 5-Month	69.0°F (20.6°C)	70.7°F (21.5°C)	-1.7°F (-0.9°C)	17th Coolest	Coolest since: 1992	1924
May–Sep 1997 5-Month	69.0°F (20.6°C)	70.7°F (21.5°C)	-1.7°F (-0.9°C)	112th Warmest	Warmest since: 1996	1936
Apr–Sep 1997 6-Month	65.7°F (18.7°C)	67.7°F (19.8°C)	-2.0°F (-1.1°C)	8th Coolest	Coolest since: 1967	1907
Apr–Sep 1997 6-Month	65.7°F (18.7°C)	67.7°F (19.8°C)	-2.0°F (-1.1°C)	121st Warmest	Warmest since: 1996	2010
Mar–Sep 1997 7-Month	62.7°F (17.1°C)	64.0°F (17.8°C)	-1.3°F (-0.7°C)	15th Coolest	Coolest since: 1996	1924
	62.7°F (17.1°C)	64.0°F (17.8°C)	-1.3°F (-0.7°C)	114th Warmest	Warmest since: 1995	2012
	Ties: 1926, 1967
Feb–Sep 1997 8-Month	59.4°F (15.2°C)	59.9°F (15.5°C)	-0.5°F (-0.3°C)	51st Coolest	Coolest since: 1996	1904, 1924
	59.4°F (15.2°C)	59.9°F (15.5°C)	-0.5°F (-0.3°C)	78th Warmest	Warmest since: 1995	2012
	Ties: 1961
Jan–Sep 1997 9-Month	55.5°F (13.1°C)	56.4°F (13.6°C)	-0.9°F (-0.5°C)	36th Coolest	Coolest since: 1996	1979
	55.5°F (13.1°C)	56.4°F (13.6°C)	-0.9°F (-0.5°C)	93rd Warmest	Warmest since: 1995	2012
	Ties: 1950, 1985
Dec 1996–Sep 1997 10-Month	53.3°F (11.8°C)	53.9°F (12.2°C)	-0.6°F (-0.4°C)	38th Coolest	Coolest since: 1996	1904
	53.3°F (11.8°C)	53.9°F (12.2°C)	-0.6°F (-0.4°C)	90th Warmest	Warmest since: 1995	2012
	Ties: 1966, 2001
Nov 1996–Sep 1997 11-Month	51.8°F (11.0°C)	52.8°F (11.6°C)	-1.0°F (-0.6°C)	24th Coolest	Coolest since: 1996	1904
	51.8°F (11.0°C)	52.8°F (11.6°C)	-1.0°F (-0.6°C)	104th Warmest	Warmest since: 1995	2012
	Ties: 1907, 1928, 1968
Oct 1996–Sep 1997 12-Month	52.2°F (11.2°C)	53.1°F (11.7°C)	-0.9°F (-0.5°C)	29th Coolest	Coolest since: 1996	1904
	52.2°F (11.2°C)	53.1°F (11.7°C)	-0.9°F (-0.5°C)	99th Warmest	Warmest since: 1995	2012
	Ties: 1967, 1969, 2003, 2015
Apr 1996–Sep 1997 18-Month	57.0°F (13.9°C)	57.9°F (14.4°C)	-0.9°F (-0.5°C)	20th Coolest	Coolest since: 1996	1918
	57.0°F (13.9°C)	57.9°F (14.4°C)	-0.9°F (-0.5°C)	108th Warmest	Warmest since: 1996	2012
	Ties: 1928, 1958, 1962, 1970, 1984, 1996
Oct 1995–Sep 1997 24-Month	51.8°F (11.0°C)	53.0°F (11.7°C)	-1.2°F (-0.7°C)	8th Coolest	Coolest since: 1980	1979
Oct 1995–Sep 1997 24-Month	51.8°F (11.0°C)	53.0°F (11.7°C)	-1.2°F (-0.7°C)	119th Warmest	Warmest since: 1996	2017
Oct 1994–Sep 1997 36-Month	52.8°F (11.6°C)	53.0°F (11.7°C)	-0.2°F (-0.1°C)	41st Coolest	Coolest since: 1996	1979
	52.8°F (11.6°C)	53.0°F (11.7°C)	-0.2°F (-0.1°C)	85th Warmest	Warmest since: 1996	2018
	Ties: 1909, 1910, 1930, 1951, 1977, 1983, 1994, 1996
Oct 1993–Sep 1997 48-Month	52.6°F (11.4°C)	53.0°F (11.7°C)	-0.4°F (-0.3°C)	27th Coolest	Coolest since: 1984	1980
	52.6°F (11.4°C)	53.0°F (11.7°C)	-0.4°F (-0.3°C)	98th Warmest	Warmest since: 1996	2019
	Ties: 1900, 1910, 1913, 1926, 1964, 1972
Oct 1992–Sep 1997 60-Month	52.6°F (11.4°C)	53.0°F (11.7°C)	-0.4°F (-0.3°C)	27th Coolest	Coolest since: 1984	1982
	52.6°F (11.4°C)	53.0°F (11.7°C)	-0.4°F (-0.3°C)	97th Warmest	Warmest since: 1996	2020
	Ties: 1900, 1909, 1910, 1927, 1961, 1965, 1984

Citing This Page

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