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 1957

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1957 1-Month	64.2°F (17.9°C)	66.2°F (19.0°C)	-2.0°F (-1.1°C)	24th Coolest	Coolest since: 1951	1918
	64.2°F (17.9°C)	66.2°F (19.0°C)	-2.0°F (-1.1°C)	105th Warmest	Warmest since: 1956	1925, 1933
	Ties: 1916, 1996
Aug–Sep 1957 2-Month	69.0°F (20.6°C)	69.8°F (21.0°C)	-0.8°F (-0.4°C)	38th Coolest	Coolest since: 1951	1967
	69.0°F (20.6°C)	69.8°F (21.0°C)	-0.8°F (-0.4°C)	91st Warmest	Warmest since: 1956	1936
	Ties: 1910
Jul–Sep 1957 3-Month	71.6°F (22.0°C)	71.8°F (22.1°C)	-0.2°F (-0.1°C)	59th Coolest	Coolest since: 1956	1967
	71.6°F (22.0°C)	71.8°F (22.1°C)	-0.2°F (-0.1°C)	70th Warmest	Warmest since: 1955	1936
	Ties: 1923, 2001
Jun–Sep 1957 4-Month	71.6°F (22.0°C)	71.6°F (22.0°C)	0.0°F (0.0°C)	55th Coolest	Coolest since: 1951	1915, 1924
	71.6°F (22.0°C)	71.6°F (22.0°C)	0.0°F (0.0°C)	74th Warmest	Warmest since: 1956	1936
	Ties: 1935, 1990, 2008
May–Sep 1957 5-Month	69.7°F (20.9°C)	69.8°F (21.0°C)	-0.1°F (-0.1°C)	56th Coolest	Coolest since: 1951	1924
	69.7°F (20.9°C)	69.8°F (21.0°C)	-0.1°F (-0.1°C)	73rd Warmest	Warmest since: 1956	1936
	Ties: 1905, 1926, 1973
Apr–Sep 1957 6-Month	66.8°F (19.3°C)	66.7°F (19.3°C)	0.1°F (0.0°C)	61st Coolest	Coolest since: 1956	1907
	66.8°F (19.3°C)	66.7°F (19.3°C)	0.1°F (0.0°C)	68th Warmest	Warmest since: 1955	2010
	Ties: 1898, 1908, 1937, 1949, 1995, 2000
Mar–Sep 1957 7-Month	62.9°F (17.2°C)	62.9°F (17.2°C)	0.0°F (0.0°C)	57th Coolest	Coolest since: 1956	1924
	62.9°F (17.2°C)	62.9°F (17.2°C)	0.0°F (0.0°C)	72nd Warmest	Warmest since: 1956	2012
	Ties: 1918, 1949, 1956, 1981
Feb–Sep 1957 8-Month	59.4°F (15.2°C)	58.7°F (14.8°C)	0.7°F (0.4°C)	85th Coolest	Coolest since: 1956	1904
	59.4°F (15.2°C)	58.7°F (14.8°C)	0.7°F (0.4°C)	44th Warmest	Warmest since: 1955	2012
	Ties: 1944, 1964, 2001
Jan–Sep 1957 9-Month	55.1°F (12.8°C)	55.0°F (12.8°C)	0.1°F (0.0°C)	66th Coolest	Coolest since: 1951	1904, 1912
Jan–Sep 1957 9-Month	55.1°F (12.8°C)	55.0°F (12.8°C)	0.1°F (0.0°C)	63rd Warmest	Warmest since: 1956	2012
Dec 1956–Sep 1957 10-Month	53.0°F (11.7°C)	52.4°F (11.3°C)	0.6°F (0.4°C)	76th Coolest	Coolest since: 1956	1904
	53.0°F (11.7°C)	52.4°F (11.3°C)	0.6°F (0.4°C)	52nd Warmest	Warmest since: 1955	2012
	Ties: 1986, 2013
Nov 1956–Sep 1957 11-Month	51.8°F (11.0°C)	51.3°F (10.7°C)	0.5°F (0.3°C)	77th Coolest	Coolest since: 1956	1904
	51.8°F (11.0°C)	51.3°F (10.7°C)	0.5°F (0.3°C)	51st Warmest	Warmest since: 1955	2012
	Ties: 1952, 2019
Oct 1956–Sep 1957 12-Month	52.5°F (11.4°C)	51.6°F (10.9°C)	0.9°F (0.5°C)	88th Coolest	Coolest since: 1956	1904
	52.5°F (11.4°C)	51.6°F (10.9°C)	0.9°F (0.5°C)	40th Warmest	Warmest since: 1955	2012
	Ties: 1911
Apr 1956–Sep 1957 18-Month	57.3°F (14.1°C)	56.7°F (13.7°C)	0.6°F (0.4°C)	86th Coolest	Coolest since: 1956	1904, 1918
	57.3°F (14.1°C)	56.7°F (13.7°C)	0.6°F (0.4°C)	42nd Warmest	Warmest since: 1955	2012
	Ties: 1901, 1949, 1964, 2010
Oct 1955–Sep 1957 24-Month	51.9°F (11.1°C)	51.6°F (10.9°C)	0.3°F (0.2°C)	79th Coolest	Coolest since: 1952	1979
	51.9°F (11.1°C)	51.6°F (10.9°C)	0.3°F (0.2°C)	48th Warmest	Warmest since: 1956	2017
	Ties: 1940, 1947, 1974, 1984, 1995
Oct 1954–Sep 1957 36-Month	52.4°F (11.3°C)	51.7°F (10.9°C)	0.7°F (0.4°C)	92nd Coolest	Coolest since: 1953	1979
	52.4°F (11.3°C)	51.7°F (10.9°C)	0.7°F (0.4°C)	34th Warmest	Warmest since: 1956	2018
	Ties: 1943, 1991, 1993
Oct 1953–Sep 1957 48-Month	52.8°F (11.6°C)	51.6°F (10.9°C)	1.2°F (0.7°C)	107th Coolest	Coolest since: 1954	1905
	52.8°F (11.6°C)	51.6°F (10.9°C)	1.2°F (0.7°C)	18th Warmest	Warmest since: 1956	2019
	Ties: 1922, 2022
Oct 1952–Sep 1957 60-Month	52.8°F (11.6°C)	51.6°F (10.9°C)	1.2°F (0.7°C)	111th Coolest	Coolest since: 1956	1906
	52.8°F (11.6°C)	51.6°F (10.9°C)	1.2°F (0.7°C)	13th Warmest	Warmest since: 1935	2020
	Ties: 1991, 2009, 2016, 2022

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on January 26, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings