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, September 1973

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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
September 1973 1-Month	67.6°F (19.8°C)	66.2°F (19.0°C)	1.4°F (0.8°C)	83rd Coolest	Coolest since: 1972	1918
	67.6°F (19.8°C)	66.2°F (19.0°C)	1.4°F (0.8°C)	46th Warmest	Warmest since: 1972	1925, 1933
	Ties: 1953, 1972, 1988
Aug–Sep 1973 2-Month	70.9°F (21.6°C)	69.8°F (21.0°C)	1.1°F (0.6°C)	89th Coolest	Coolest since: 1972	1967
Aug–Sep 1973 2-Month	70.9°F (21.6°C)	69.8°F (21.0°C)	1.1°F (0.6°C)	40th Warmest	Warmest since: 1960	1936
Jul–Sep 1973 3-Month	72.5°F (22.5°C)	71.7°F (22.1°C)	0.8°F (0.4°C)	86th Coolest	Coolest since: 1972	1967
	72.5°F (22.5°C)	71.7°F (22.1°C)	0.8°F (0.4°C)	43rd Warmest	Warmest since: 1960	1936
	Ties: 1991
Jun–Sep 1973 4-Month	72.5°F (22.5°C)	71.7°F (22.1°C)	0.8°F (0.4°C)	85th Coolest	Coolest since: 1972	1915, 1924
	72.5°F (22.5°C)	71.7°F (22.1°C)	0.8°F (0.4°C)	44th Warmest	Warmest since: 1959	1936
	Ties: 1898, 2022
May–Sep 1973 5-Month	69.7°F (20.9°C)	69.7°F (20.9°C)	0.0°F (0.0°C)	56th Coolest	Coolest since: 1972	1924
	69.7°F (20.9°C)	69.7°F (20.9°C)	0.0°F (0.0°C)	73rd Warmest	Warmest since: 1970	1936
	Ties: 1905, 1926, 1957
Apr–Sep 1973 6-Month	66.6°F (19.2°C)	66.7°F (19.3°C)	-0.1°F (-0.1°C)	51st Coolest	Coolest since: 1972	1907
	66.6°F (19.2°C)	66.7°F (19.3°C)	-0.1°F (-0.1°C)	78th Warmest	Warmest since: 1971	2010
	Ties: 1905, 1916, 1971, 1981, 2020
Mar–Sep 1973 7-Month	63.8°F (17.7°C)	62.9°F (17.2°C)	0.9°F (0.5°C)	93rd Coolest	Coolest since: 1972	1924
	63.8°F (17.7°C)	62.9°F (17.2°C)	0.9°F (0.5°C)	36th Warmest	Warmest since: 1959	2012
	Ties: 1985, 2002
Feb–Sep 1973 8-Month	59.7°F (15.4°C)	58.7°F (14.8°C)	1.0°F (0.6°C)	94th Coolest	Coolest since: 1972	1904
	59.7°F (15.4°C)	58.7°F (14.8°C)	1.0°F (0.6°C)	35th Warmest	Warmest since: 1959	2012
	Ties: 1919, 1934
Jan–Sep 1973 9-Month	56.2°F (13.4°C)	54.9°F (12.7°C)	1.3°F (0.7°C)	94th Coolest	Coolest since: 1972	1904, 1912
	56.2°F (13.4°C)	54.9°F (12.7°C)	1.3°F (0.7°C)	35th Warmest	Warmest since: 1964	2012
	Ties: 1941, 1964, 2018
Dec 1972–Sep 1973 10-Month	53.3°F (11.8°C)	52.4°F (11.3°C)	0.9°F (0.5°C)	86th Coolest	Coolest since: 1972	1904
	53.3°F (11.8°C)	52.4°F (11.3°C)	0.9°F (0.5°C)	42nd Warmest	Warmest since: 1955	2012
	Ties: 1942, 2004
Nov 1972–Sep 1973 11-Month	51.9°F (11.1°C)	51.4°F (10.8°C)	0.5°F (0.3°C)	81st Coolest	Coolest since: 1972	1904
	51.9°F (11.1°C)	51.4°F (10.8°C)	0.5°F (0.3°C)	47th Warmest	Warmest since: 1955	2012
	Ties: 1908, 1944, 1990
Oct 1972–Sep 1973 12-Month	51.8°F (11.0°C)	51.6°F (10.9°C)	0.2°F (0.1°C)	65th Coolest	Coolest since: 1971	1904
	51.8°F (11.0°C)	51.6°F (10.9°C)	0.2°F (0.1°C)	63rd Warmest	Warmest since: 1972	2012
	Ties: 1908, 1947, 2008
Apr 1972–Sep 1973 18-Month	56.6°F (13.7°C)	56.7°F (13.7°C)	-0.1°F (0.0°C)	53rd Coolest	Coolest since: 1970	1904, 1918
	56.6°F (13.7°C)	56.7°F (13.7°C)	-0.1°F (0.0°C)	75th Warmest	Warmest since: 1972	2012
	Ties: 1925, 1930, 1943, 1966, 1985
Oct 1971–Sep 1973 24-Month	52.1°F (11.2°C)	51.6°F (10.9°C)	0.5°F (0.3°C)	87th Coolest	Coolest since: 1972	1979
	52.1°F (11.2°C)	51.6°F (10.9°C)	0.5°F (0.3°C)	40th Warmest	Warmest since: 1956	2017
	Ties: 1943, 1949, 1976, 1986, 2010
Oct 1970–Sep 1973 36-Month	51.8°F (11.0°C)	51.6°F (10.9°C)	0.2°F (0.1°C)	70th Coolest	Coolest since: 1972	1979
	51.8°F (11.0°C)	51.6°F (10.9°C)	0.2°F (0.1°C)	56th Warmest	Warmest since: 1957	2018
	Ties: 1938, 1950
Oct 1969–Sep 1973 48-Month	51.5°F (10.8°C)	51.6°F (10.9°C)	-0.1°F (-0.1°C)	48th Coolest	Coolest since: 1972	1905
	51.5°F (10.8°C)	51.6°F (10.9°C)	-0.1°F (-0.1°C)	77th Warmest	Warmest since: 1967	2019
	Ties: 1953, 1959, 1967
Oct 1968–Sep 1973 60-Month	51.3°F (10.7°C)	51.6°F (10.9°C)	-0.3°F (-0.2°C)	35th Coolest	Coolest since: 1972	1906
	51.3°F (10.7°C)	51.6°F (10.9°C)	-0.3°F (-0.2°C)	89th Warmest	Warmest since: 1968	2020
	Ties: 1900, 1910, 1960, 1966, 1967

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published May 2023, retrieved on June 8, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings