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 1949

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1949 1-Month	61.7°F (16.5°C)	67.4°F (19.7°C)	-5.7°F (-3.2°C)	3rd Coolest	Coolest since: 1918	1918
September 1949 1-Month	61.7°F (16.5°C)	67.4°F (19.7°C)	-5.7°F (-3.2°C)	126th Warmest	Warmest since: 1948	1925
Aug–Sep 1949 2-Month	67.9°F (19.9°C)	70.8°F (21.6°C)	-2.9°F (-1.7°C)	7th Coolest	Coolest since: 1946	1967
	67.9°F (19.9°C)	70.8°F (21.6°C)	-2.9°F (-1.7°C)	122nd Warmest	Warmest since: 1948	1936
	Ties: 1946
Jul–Sep 1949 3-Month	71.6°F (22.0°C)	72.7°F (22.6°C)	-1.1°F (-0.6°C)	34th Coolest	Coolest since: 1946	1967
	71.6°F (22.0°C)	72.7°F (22.6°C)	-1.1°F (-0.6°C)	95th Warmest	Warmest since: 1948	1936
	Ties: 1909, 1945, 1958, 2000
Jun–Sep 1949 4-Month	72.4°F (22.4°C)	72.6°F (22.6°C)	-0.2°F (-0.2°C)	53rd Coolest	Coolest since: 1946	1967
	72.4°F (22.4°C)	72.6°F (22.6°C)	-0.2°F (-0.2°C)	76th Warmest	Warmest since: 1948	1936
	Ties: 1905, 1935, 1957, 1990, 1993
May–Sep 1949 5-Month	71.0°F (21.7°C)	70.8°F (21.6°C)	0.2°F (0.1°C)	71st Coolest	Coolest since: 1948	1924
	71.0°F (21.7°C)	70.8°F (21.6°C)	0.2°F (0.1°C)	58th Warmest	Warmest since: 1944	1936
	Ties: 1896, 2017
Apr–Sep 1949 6-Month	67.8°F (19.9°C)	67.7°F (19.8°C)	0.1°F (0.1°C)	62nd Coolest	Coolest since: 1947	1907
	67.8°F (19.9°C)	67.7°F (19.8°C)	0.1°F (0.1°C)	67th Warmest	Warmest since: 1948	2010
	Ties: 1905, 1985
Mar–Sep 1949 7-Month	64.1°F (17.8°C)	64.0°F (17.8°C)	0.1°F (0.0°C)	62nd Coolest	Coolest since: 1947	1924
	64.1°F (17.8°C)	64.0°F (17.8°C)	0.1°F (0.0°C)	67th Warmest	Warmest since: 1948	2012
	Ties: 1957, 2020
Feb–Sep 1949 8-Month	60.4°F (15.8°C)	60.0°F (15.6°C)	0.4°F (0.2°C)	77th Coolest	Coolest since: 1948	1904, 1924
	60.4°F (15.8°C)	60.0°F (15.6°C)	0.4°F (0.2°C)	52nd Warmest	Warmest since: 1946	2012
	Ties: 1896, 1913, 2009, 2020
Jan–Sep 1949 9-Month	57.2°F (14.0°C)	56.3°F (13.5°C)	0.9°F (0.5°C)	86th Coolest	Coolest since: 1948	1979
	57.2°F (14.0°C)	56.3°F (13.5°C)	0.9°F (0.5°C)	43rd Warmest	Warmest since: 1946	2012
	Ties: 1898, 2019
Dec 1948–Sep 1949 10-Month	55.1°F (12.8°C)	53.9°F (12.2°C)	1.2°F (0.6°C)	95th Coolest	Coolest since: 1948	1904
	55.1°F (12.8°C)	53.9°F (12.2°C)	1.2°F (0.6°C)	33rd Warmest	Warmest since: 1941	2012
	Ties: 1911, 1914, 2018, 2019
Nov 1948–Sep 1949 11-Month	54.2°F (12.3°C)	52.9°F (11.6°C)	1.3°F (0.7°C)	102nd Coolest	Coolest since: 1948	1904
	54.2°F (12.3°C)	52.9°F (11.6°C)	1.3°F (0.7°C)	26th Warmest	Warmest since: 1939	2012
	Ties: 1925, 1931, 1939, 2021, 2022
Oct 1948–Sep 1949 12-Month	54.1°F (12.3°C)	53.1°F (11.7°C)	1.0°F (0.6°C)	95th Coolest	Coolest since: 1948	1904
	54.1°F (12.3°C)	53.1°F (11.7°C)	1.0°F (0.6°C)	33rd Warmest	Warmest since: 1942	2012
	Ties: 1931, 1934, 1957, 1972, 2004
Apr 1948–Sep 1949 18-Month	58.8°F (14.9°C)	58.0°F (14.4°C)	0.8°F (0.5°C)	93rd Coolest	Coolest since: 1948	1918
	58.8°F (14.9°C)	58.0°F (14.4°C)	0.8°F (0.5°C)	35th Warmest	Warmest since: 1942	2012
	Ties: 1919, 1986, 1998
Oct 1947–Sep 1949 24-Month	53.7°F (12.1°C)	53.1°F (11.7°C)	0.6°F (0.4°C)	87th Coolest	Coolest since: 1948	1979
	53.7°F (12.1°C)	53.1°F (11.7°C)	0.6°F (0.4°C)	40th Warmest	Warmest since: 1943	2017
	Ties: 1923, 1973, 2010
Oct 1946–Sep 1949 36-Month	53.5°F (11.9°C)	53.0°F (11.7°C)	0.5°F (0.2°C)	80th Coolest	Coolest since: 1948	1979
	53.5°F (11.9°C)	53.0°F (11.7°C)	0.5°F (0.2°C)	46th Warmest	Warmest since: 1944	2018
	Ties: 1942, 1950
Oct 1945–Sep 1949 48-Month	53.5°F (11.9°C)	53.0°F (11.7°C)	0.5°F (0.2°C)	81st Coolest	Coolest since: 1948	1980
	53.5°F (11.9°C)	53.0°F (11.7°C)	0.5°F (0.2°C)	44th Warmest	Warmest since: 1944	2019
	Ties: 1987, 1994, 1998, 1999, 2015
Oct 1944–Sep 1949 60-Month	53.3°F (11.8°C)	53.0°F (11.7°C)	0.3°F (0.1°C)	65th Coolest	Coolest since: 1948	1982
	53.3°F (11.8°C)	53.0°F (11.7°C)	0.3°F (0.1°C)	59th Warmest	Warmest since: 1946	2020
	Ties: 1924

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on February 2, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings