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 1956

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1956 1-Month	66.1°F (18.9°C)	67.4°F (19.7°C)	-1.3°F (-0.8°C)	41st Coolest	Coolest since: 1951	1918
	66.1°F (18.9°C)	67.4°F (19.7°C)	-1.3°F (-0.8°C)	88th Warmest	Warmest since: 1955	1925
	Ties: 1942, 1946, 1979
Aug–Sep 1956 2-Month	70.3°F (21.3°C)	70.8°F (21.6°C)	-0.5°F (-0.3°C)	52nd Coolest	Coolest since: 1952	1967
Aug–Sep 1956 2-Month	70.3°F (21.3°C)	70.8°F (21.6°C)	-0.5°F (-0.3°C)	77th Warmest	Warmest since: 1955	1936
Jul–Sep 1956 3-Month	71.8°F (22.1°C)	72.6°F (22.6°C)	-0.8°F (-0.5°C)	42nd Coolest	Coolest since: 1951	1967
	71.8°F (22.1°C)	72.6°F (22.6°C)	-0.8°F (-0.5°C)	87th Warmest	Warmest since: 1955	1936
	Ties: 1903, 1920
Jun–Sep 1956 4-Month	72.2°F (22.3°C)	72.5°F (22.5°C)	-0.3°F (-0.2°C)	48th Coolest	Coolest since: 1951	1967
	72.2°F (22.3°C)	72.5°F (22.5°C)	-0.3°F (-0.2°C)	81st Warmest	Warmest since: 1955	1936
	Ties: 1923, 1942
May–Sep 1956 5-Month	70.8°F (21.6°C)	70.8°F (21.6°C)	0.0°F (0.0°C)	67th Coolest	Coolest since: 1951	1924
	70.8°F (21.6°C)	70.8°F (21.6°C)	0.0°F (0.0°C)	62nd Warmest	Warmest since: 1955	1936
	Ties: 1905, 1973
Apr–Sep 1956 6-Month	67.5°F (19.7°C)	67.8°F (19.9°C)	-0.3°F (-0.2°C)	51st Coolest	Coolest since: 1951	1907
	67.5°F (19.7°C)	67.8°F (19.9°C)	-0.3°F (-0.2°C)	78th Warmest	Warmest since: 1955	2010
	Ties: 1937, 1947, 1969, 2013
Mar–Sep 1956 7-Month	63.8°F (17.7°C)	64.0°F (17.8°C)	-0.2°F (-0.1°C)	50th Coolest	Coolest since: 1951	1924
	63.8°F (17.7°C)	64.0°F (17.8°C)	-0.2°F (-0.1°C)	79th Warmest	Warmest since: 1955	2012
	Ties: 1903, 1910, 1935, 1972, 2003
Feb–Sep 1956 8-Month	60.1°F (15.6°C)	59.9°F (15.5°C)	0.2°F (0.1°C)	67th Coolest	Coolest since: 1951	1904, 1924
	60.1°F (15.6°C)	59.9°F (15.5°C)	0.2°F (0.1°C)	62nd Warmest	Warmest since: 1955	2012
	Ties: 1927, 1943, 1945, 1981
Jan–Sep 1956 9-Month	56.4°F (13.6°C)	56.3°F (13.5°C)	0.1°F (0.1°C)	66th Coolest	Coolest since: 1951	1979
	56.4°F (13.6°C)	56.3°F (13.5°C)	0.1°F (0.1°C)	63rd Warmest	Warmest since: 1955	2012
	Ties: 1927, 1977
Dec 1955–Sep 1956 10-Month	53.8°F (12.1°C)	53.9°F (12.2°C)	-0.1°F (-0.1°C)	58th Coolest	Coolest since: 1951	1904
	53.8°F (12.1°C)	53.9°F (12.2°C)	-0.1°F (-0.1°C)	70th Warmest	Warmest since: 1955	2012
	Ties: 1901, 1937, 1980, 1989
Nov 1955–Sep 1956 11-Month	52.4°F (11.3°C)	52.9°F (11.6°C)	-0.5°F (-0.3°C)	42nd Coolest	Coolest since: 1951	1904
	52.4°F (11.3°C)	52.9°F (11.6°C)	-0.5°F (-0.3°C)	86th Warmest	Warmest since: 1955	2012
	Ties: 1897, 1937
Oct 1955–Sep 1956 12-Month	52.6°F (11.4°C)	53.1°F (11.7°C)	-0.5°F (-0.3°C)	40th Coolest	Coolest since: 1951	1904
	52.6°F (11.4°C)	53.1°F (11.7°C)	-0.5°F (-0.3°C)	88th Warmest	Warmest since: 1955	2012
	Ties: 1937, 1945, 1962, 1989
Apr 1955–Sep 1956 18-Month	58.3°F (14.6°C)	57.9°F (14.4°C)	0.4°F (0.2°C)	74th Coolest	Coolest since: 1952	1918
	58.3°F (14.6°C)	57.9°F (14.4°C)	0.4°F (0.2°C)	54th Warmest	Warmest since: 1955	2012
	Ties: 1943, 1964, 1989
Oct 1954–Sep 1956 24-Month	53.6°F (12.0°C)	53.1°F (11.7°C)	0.5°F (0.3°C)	83rd Coolest	Coolest since: 1952	1979
	53.6°F (12.0°C)	53.1°F (11.7°C)	0.5°F (0.3°C)	44th Warmest	Warmest since: 1955	2017
	Ties: 1950
Oct 1953–Sep 1956 36-Month	54.3°F (12.4°C)	53.0°F (11.7°C)	1.3°F (0.7°C)	108th Coolest	Coolest since: 1953	1979
	54.3°F (12.4°C)	53.0°F (11.7°C)	1.3°F (0.7°C)	18th Warmest	Warmest since: 1955	2018
	Ties: 1921, 1988, 2022
Oct 1952–Sep 1956 48-Month	54.4°F (12.4°C)	53.0°F (11.7°C)	1.4°F (0.7°C)	111th Coolest	Coolest since: 1954	1980
	54.4°F (12.4°C)	53.0°F (11.7°C)	1.4°F (0.7°C)	14th Warmest	Warmest since: 1955	2019
	Ties: 2000, 2005
Oct 1951–Sep 1956 60-Month	54.3°F (12.4°C)	53.0°F (11.7°C)	1.3°F (0.7°C)	112th Coolest	Coolest since: 1955	1982
	54.3°F (12.4°C)	53.0°F (11.7°C)	1.3°F (0.7°C)	12th Warmest	Warmest since: 1936	2020
	Ties: 1936, 2007, 2009

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on January 27, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings