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 5. East

Average Temperature Rankings, June 1940

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
June 1940 1-Month	71.5°F (21.9°C)	70.4°F (21.3°C)	1.1°F (0.6°C)	72nd Coolest	Coolest since: 1938	1903
	71.5°F (21.9°C)	70.4°F (21.3°C)	1.1°F (0.6°C)	57th Warmest	Warmest since: 1939	1933
	Ties: 1963, 2012
May–Jun 1940 2-Month	64.4°F (18.0°C)	65.7°F (18.7°C)	-1.3°F (-0.7°C)	28th Coolest	Coolest since: 1935	1907
	64.4°F (18.0°C)	65.7°F (18.7°C)	-1.3°F (-0.7°C)	101st Warmest	Warmest since: 1939	2018
	Ties: 1968, 1976, 1989
Apr–Jun 1940 3-Month	58.8°F (14.9°C)	60.4°F (15.8°C)	-1.6°F (-0.9°C)	21st Coolest	Coolest since: 1935	1907
Apr–Jun 1940 3-Month	58.8°F (14.9°C)	60.4°F (15.8°C)	-1.6°F (-0.9°C)	108th Warmest	Warmest since: 1939	1991
Mar–Jun 1940 4-Month	52.7°F (11.5°C)	54.9°F (12.7°C)	-2.2°F (-1.2°C)	12th Coolest	Coolest since: 1928	1926, 1960
	52.7°F (11.5°C)	54.9°F (12.7°C)	-2.2°F (-1.2°C)	117th Warmest	Warmest since: 1939	2012
	Ties: 1906, 1996
Feb–Jun 1940 5-Month	47.9°F (8.8°C)	49.4°F (9.7°C)	-1.5°F (-0.9°C)	28th Coolest	Coolest since: 1936	1904, 1947
	47.9°F (8.8°C)	49.4°F (9.7°C)	-1.5°F (-0.9°C)	101st Warmest	Warmest since: 1939	2012
	Ties: 1928
Jan–Jun 1940 6-Month	42.0°F (5.6°C)	45.1°F (7.3°C)	-3.1°F (-1.7°C)	6th Coolest	Coolest since: 1924	1912
	42.0°F (5.6°C)	45.1°F (7.3°C)	-3.1°F (-1.7°C)	123rd Warmest	Warmest since: 1939	2012
	Ties: 1924
Dec 1939–Jun 1940 7-Month	40.7°F (4.8°C)	42.7°F (5.9°C)	-2.0°F (-1.1°C)	17th Coolest	Coolest since: 1936	1904
	40.7°F (4.8°C)	42.7°F (5.9°C)	-2.0°F (-1.1°C)	111th Warmest	Warmest since: 1939	2012
	Ties: 1951
Nov 1939–Jun 1940 8-Month	40.4°F (4.7°C)	42.3°F (5.7°C)	-1.9°F (-1.0°C)	18th Coolest	Coolest since: 1936	1904
	40.4°F (4.7°C)	42.3°F (5.7°C)	-1.9°F (-1.0°C)	110th Warmest	Warmest since: 1939	2012
	Ties: 1996
Oct 1939–Jun 1940 9-Month	42.1°F (5.6°C)	43.6°F (6.4°C)	-1.5°F (-0.8°C)	20th Coolest	Coolest since: 1936	1904
	42.1°F (5.6°C)	43.6°F (6.4°C)	-1.5°F (-0.8°C)	108th Warmest	Warmest since: 1939	2012
	Ties: 1907, 1963
Sep 1939–Jun 1940 10-Month	44.8°F (7.1°C)	45.7°F (7.6°C)	-0.9°F (-0.5°C)	29th Coolest	Coolest since: 1936	1904
	44.8°F (7.1°C)	45.7°F (7.6°C)	-0.9°F (-0.5°C)	99th Warmest	Warmest since: 1939	2012
	Ties: 1994
Aug 1939–Jun 1940 11-Month	47.2°F (8.4°C)	48.1°F (8.9°C)	-0.9°F (-0.5°C)	26th Coolest	Coolest since: 1936	1904
	47.2°F (8.4°C)	48.1°F (8.9°C)	-0.9°F (-0.5°C)	102nd Warmest	Warmest since: 1939	2012, 2017
	Ties: 1910, 1996
Jul 1939–Jun 1940 12-Month	49.5°F (9.7°C)	50.4°F (10.2°C)	-0.9°F (-0.5°C)	30th Coolest	Coolest since: 1936	1904
	49.5°F (9.7°C)	50.4°F (10.2°C)	-0.9°F (-0.5°C)	98th Warmest	Warmest since: 1939	2012
	Ties: 1993
Jan 1939–Jun 1940 18-Month	48.5°F (9.2°C)	48.5°F (9.2°C)	0.0°F (0.0°C)	57th Coolest	Coolest since: 1937	1905
	48.5°F (9.2°C)	48.5°F (9.2°C)	0.0°F (0.0°C)	71st Warmest	Warmest since: 1939	2017
	Ties: 1928, 1973, 2009
Jul 1938–Jun 1940 24-Month	50.8°F (10.4°C)	50.3°F (10.2°C)	0.5°F (0.2°C)	78th Coolest	Coolest since: 1937	1905
	50.8°F (10.4°C)	50.3°F (10.2°C)	0.5°F (0.2°C)	49th Warmest	Warmest since: 1939	2017
	Ties: 1973, 1975, 1998, 2009
Jul 1937–Jun 1940 36-Month	50.8°F (10.4°C)	50.3°F (10.2°C)	0.5°F (0.2°C)	79th Coolest	Coolest since: 1938	1905, 1906
	50.8°F (10.4°C)	50.3°F (10.2°C)	0.5°F (0.2°C)	47th Warmest	Warmest since: 1939	2018
	Ties: 1944, 1949, 2010
Jul 1936–Jun 1940 48-Month	50.9°F (10.5°C)	50.3°F (10.2°C)	0.6°F (0.3°C)	82nd Coolest	Coolest since: 1939	1905
	50.9°F (10.5°C)	50.3°F (10.2°C)	0.6°F (0.3°C)	43rd Warmest	Warmest since: 1935	2019
	Ties: 1941, 1944, 1986, 2011
Jul 1935–Jun 1940 60-Month	50.4°F (10.2°C)	50.2°F (10.1°C)	0.2°F (0.1°C)	54th Coolest	Coolest since: 1931	1906
	50.4°F (10.2°C)	50.2°F (10.1°C)	0.2°F (0.1°C)	70th Warmest	Warmest since: 1939	2020
	Ties: 1948, 1952, 1977, 1985

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on January 29, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings