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, August 1940

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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
August 1940 1-Month	75.7°F (24.3°C)	74.2°F (23.4°C)	1.5°F (0.9°C)	98th Coolest	Coolest since: 1939	1915
	75.7°F (24.3°C)	74.2°F (23.4°C)	1.5°F (0.9°C)	31st Warmest	Warmest since: 1938	1947
	Ties: 1935, 1960, 1991
Jul–Aug 1940 2-Month	76.1°F (24.5°C)	75.3°F (24.1°C)	0.8°F (0.4°C)	91st Coolest	Coolest since: 1939	1915
	76.1°F (24.5°C)	75.3°F (24.1°C)	0.8°F (0.4°C)	38th Warmest	Warmest since: 1938	1936
	Ties: 1933, 1987
Jun–Aug 1940 3-Month	75.1°F (23.9°C)	74.3°F (23.5°C)	0.8°F (0.4°C)	89th Coolest	Coolest since: 1939	1927
	75.1°F (23.9°C)	74.3°F (23.5°C)	0.8°F (0.4°C)	40th Warmest	Warmest since: 1936	1936
	Ties: 1916, 1925, 1984, 2022
May–Aug 1940 4-Month	71.3°F (21.8°C)	71.6°F (22.0°C)	-0.3°F (-0.2°C)	53rd Coolest	Coolest since: 1935	1915
	71.3°F (21.8°C)	71.6°F (22.0°C)	-0.3°F (-0.2°C)	76th Warmest	Warmest since: 1939	1936
	Ties: 1895, 1906, 1908, 2017, 2020
Apr–Aug 1940 5-Month	67.2°F (19.6°C)	67.8°F (19.9°C)	-0.6°F (-0.3°C)	38th Coolest	Coolest since: 1935	1907
	67.2°F (19.6°C)	67.8°F (19.9°C)	-0.6°F (-0.3°C)	91st Warmest	Warmest since: 1939	2010
	Ties: 1898, 1974, 2020
Mar–Aug 1940 6-Month	62.6°F (17.0°C)	63.4°F (17.4°C)	-0.8°F (-0.4°C)	33rd Coolest	Coolest since: 1928	1960
	62.6°F (17.0°C)	63.4°F (17.4°C)	-0.8°F (-0.4°C)	96th Warmest	Warmest since: 1939	2012
	Ties: 2008
Feb–Aug 1940 7-Month	58.0°F (14.4°C)	58.9°F (14.9°C)	-0.9°F (-0.5°C)	35th Coolest	Coolest since: 1929	1904
	58.0°F (14.4°C)	58.9°F (14.9°C)	-0.9°F (-0.5°C)	94th Warmest	Warmest since: 1939	2012
	Ties: 1905, 1929
Jan–Aug 1940 8-Month	52.6°F (11.4°C)	55.0°F (12.8°C)	-2.4°F (-1.4°C)	9th Coolest	Coolest since: 1924	1978
	52.6°F (11.4°C)	55.0°F (12.8°C)	-2.4°F (-1.4°C)	120th Warmest	Warmest since: 1939	2012
	Ties: 1958
Dec 1939–Aug 1940 9-Month	50.6°F (10.3°C)	52.4°F (11.3°C)	-1.8°F (-1.0°C)	15th Coolest	Coolest since: 1920	1904
	50.6°F (10.3°C)	52.4°F (11.3°C)	-1.8°F (-1.0°C)	113th Warmest	Warmest since: 1939	2012
	Ties: 1951
Nov 1939–Aug 1940 10-Month	49.6°F (9.8°C)	51.4°F (10.8°C)	-1.8°F (-1.0°C)	12th Coolest	Coolest since: 1920	1904
	49.6°F (9.8°C)	51.4°F (10.8°C)	-1.8°F (-1.0°C)	116th Warmest	Warmest since: 1939	2012
	Ties: 1963, 1970, 1996
Oct 1939–Aug 1940 11-Month	50.4°F (10.2°C)	51.8°F (11.0°C)	-1.4°F (-0.8°C)	22nd Coolest	Coolest since: 1926	1904
	50.4°F (10.2°C)	51.8°F (11.0°C)	-1.4°F (-0.8°C)	106th Warmest	Warmest since: 1939	2012
	Ties: 1915, 1963
Sep 1939–Aug 1940 12-Month	52.2°F (11.2°C)	53.1°F (11.7°C)	-0.9°F (-0.5°C)	30th Coolest	Coolest since: 1926	1904
	52.2°F (11.2°C)	53.1°F (11.7°C)	-0.9°F (-0.5°C)	98th Warmest	Warmest since: 1939	2012
	Ties: 1969
Mar 1939–Aug 1940 18-Month	56.0°F (13.3°C)	56.5°F (13.6°C)	-0.5°F (-0.3°C)	35th Coolest	Coolest since: 1929	1904
	56.0°F (13.3°C)	56.5°F (13.6°C)	-0.5°F (-0.3°C)	93rd Warmest	Warmest since: 1939	2012
	Ties: 1925, 1928, 1959, 1960, 1969, 1985, 1996
Sep 1938–Aug 1940 24-Month	53.3°F (11.8°C)	53.1°F (11.7°C)	0.2°F (0.1°C)	73rd Coolest	Coolest since: 1937	1979
	53.3°F (11.8°C)	53.1°F (11.7°C)	0.2°F (0.1°C)	54th Warmest	Warmest since: 1939	2017
	Ties: 1947, 1972, 1976, 1995, 2004, 2009
Sep 1937–Aug 1940 36-Month	53.4°F (11.9°C)	53.0°F (11.7°C)	0.4°F (0.2°C)	76th Coolest	Coolest since: 1938	1979
	53.4°F (11.9°C)	53.0°F (11.7°C)	0.4°F (0.2°C)	50th Warmest	Warmest since: 1939	2018
	Ties: 1915, 1975
Sep 1936–Aug 1940 48-Month	53.3°F (11.8°C)	53.0°F (11.7°C)	0.3°F (0.1°C)	68th Coolest	Coolest since: 1938	1980
	53.3°F (11.8°C)	53.0°F (11.7°C)	0.3°F (0.1°C)	57th Warmest	Warmest since: 1939	2019
	Ties: 1925, 1938, 1958, 1986, 1998, 2015
Sep 1935–Aug 1940 60-Month	53.2°F (11.8°C)	53.0°F (11.7°C)	0.2°F (0.1°C)	60th Coolest	Coolest since: 1931	1906, 1981, 1982
	53.2°F (11.8°C)	53.0°F (11.7°C)	0.2°F (0.1°C)	64th Warmest	Warmest since: 1939	2020
	Ties: 1947

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2023, retrieved on March 31, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings