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 3. West

Average Temperature Rankings, January 1940

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2023)	Warmest/Coolest Since	Record
January 1940 1-Month	10.7°F (-11.8°C)	23.8°F (-4.6°C)	-13.1°F (-7.2°C)	4th Coolest	Coolest since: 1918	1977
January 1940 1-Month	10.7°F (-11.8°C)	23.8°F (-4.6°C)	-13.1°F (-7.2°C)	126th Warmest	Warmest since: 1939	2006
Dec 1939–Jan 1940 2-Month	22.4°F (-5.3°C)	26.1°F (-3.3°C)	-3.7°F (-2.0°C)	25th Coolest	Coolest since: 1936	1918
Dec 1939–Jan 1940 2-Month	22.4°F (-5.3°C)	26.1°F (-3.3°C)	-3.7°F (-2.0°C)	104th Warmest	Warmest since: 1939	1932
Nov 1939–Jan 1940 3-Month	28.3°F (-2.1°C)	30.8°F (-0.7°C)	-2.5°F (-1.4°C)	23rd Coolest	Coolest since: 1936	1977
	28.3°F (-2.1°C)	30.8°F (-0.7°C)	-2.5°F (-1.4°C)	106th Warmest	Warmest since: 1939	2002
	Ties: 1915
Oct 1939–Jan 1940 4-Month	35.4°F (1.9°C)	36.8°F (2.7°C)	-1.4°F (-0.8°C)	35th Coolest	Coolest since: 1938	1977
	35.4°F (1.9°C)	36.8°F (2.7°C)	-1.4°F (-0.8°C)	94th Warmest	Warmest since: 1939	1932
	Ties: 2010
Sep 1939–Jan 1940 5-Month	42.4°F (5.8°C)	42.6°F (5.9°C)	-0.2°F (-0.1°C)	53rd Coolest	Coolest since: 1938	1977
	42.4°F (5.8°C)	42.6°F (5.9°C)	-0.2°F (-0.1°C)	76th Warmest	Warmest since: 1939	1932
	Ties: 1903, 2003
Aug 1939–Jan 1940 6-Month	47.4°F (8.6°C)	47.8°F (8.8°C)	-0.4°F (-0.2°C)	48th Coolest	Coolest since: 1938	1977
	47.4°F (8.6°C)	47.8°F (8.8°C)	-0.4°F (-0.2°C)	81st Warmest	Warmest since: 1939	1932
	Ties: 1915, 1944, 1990
Jul 1939–Jan 1940 7-Month	51.5°F (10.8°C)	51.8°F (11.0°C)	-0.3°F (-0.2°C)	47th Coolest	Coolest since: 1938	1977
	51.5°F (10.8°C)	51.8°F (11.0°C)	-0.3°F (-0.2°C)	82nd Warmest	Warmest since: 1939	1932
	Ties: 1990
Jun 1939–Jan 1940 8-Month	54.2°F (12.3°C)	54.3°F (12.4°C)	-0.1°F (-0.1°C)	51st Coolest	Coolest since: 1938	1977
	54.2°F (12.3°C)	54.3°F (12.4°C)	-0.1°F (-0.1°C)	78th Warmest	Warmest since: 1939	1932
	Ties: 1956, 1985, 2005
May 1939–Jan 1940 9-Month	55.5°F (13.1°C)	55.2°F (12.9°C)	0.3°F (0.2°C)	70th Coolest	Coolest since: 1938	1918, 1977
	55.5°F (13.1°C)	55.2°F (12.9°C)	0.3°F (0.2°C)	59th Warmest	Warmest since: 1939	1932
	Ties: 1907, 1948, 1958, 2018
Apr 1939–Jan 1940 10-Month	54.8°F (12.7°C)	54.8°F (12.7°C)	0.0°F (0.0°C)	58th Coolest	Coolest since: 1938	1918
	54.8°F (12.7°C)	54.8°F (12.7°C)	0.0°F (0.0°C)	71st Warmest	Warmest since: 1939	1932
	Ties: 1902, 1974, 2003
Mar 1939–Jan 1940 11-Month	53.6°F (12.0°C)	53.4°F (11.9°C)	0.2°F (0.1°C)	72nd Coolest	Coolest since: 1938	1918
	53.6°F (12.0°C)	53.4°F (11.9°C)	0.2°F (0.1°C)	57th Warmest	Warmest since: 1939	1932, 2013, 2017
	Ties: 1897, 1898, 1958, 1978
Feb 1939–Jan 1940 12-Month	51.4°F (10.8°C)	51.2°F (10.7°C)	0.2°F (0.1°C)	67th Coolest	Coolest since: 1938	1918
	51.4°F (10.8°C)	51.2°F (10.7°C)	0.2°F (0.1°C)	62nd Warmest	Warmest since: 1939	1932
	Ties: 1975, 1998
Aug 1938–Jan 1940 18-Month	51.4°F (10.8°C)	50.1°F (10.1°C)	1.3°F (0.7°C)	105th Coolest	Coolest since: 1938	1905, 1918
	51.4°F (10.8°C)	50.1°F (10.1°C)	1.3°F (0.7°C)	23rd Warmest	Warmest since: 1939	2017
	Ties: 1915, 1950
Feb 1938–Jan 1940 24-Month	53.0°F (11.7°C)	51.2°F (10.7°C)	1.8°F (1.0°C)	116th Coolest	Coolest since: 1939	1918
	53.0°F (11.7°C)	51.2°F (10.7°C)	1.8°F (1.0°C)	12th Warmest	Warmest since: 1935	1932
	Ties: 1935
Feb 1937–Jan 1940 36-Month	52.1°F (11.2°C)	51.2°F (10.7°C)	0.9°F (0.5°C)	98th Coolest	Coolest since: 1938	1905
	52.1°F (11.2°C)	51.2°F (10.7°C)	0.9°F (0.5°C)	29th Warmest	Warmest since: 1939	1933
	Ties: 1942, 1993, 2022
Feb 1936–Jan 1940 48-Month	52.2°F (11.2°C)	51.2°F (10.7°C)	1.0°F (0.5°C)	102nd Coolest	Coolest since: 1939	1905
	52.2°F (11.2°C)	51.2°F (10.7°C)	1.0°F (0.5°C)	24th Warmest	Warmest since: 1935	1934
	Ties: 1932, 1990, 2021
Feb 1935–Jan 1940 60-Month	51.7°F (10.9°C)	51.2°F (10.7°C)	0.5°F (0.2°C)	85th Coolest	Coolest since: 1938	1906, 1907
	51.7°F (10.9°C)	51.2°F (10.7°C)	0.5°F (0.2°C)	40th Warmest	Warmest since: 1939	1935
	Ties: 1925, 1926, 1938, 1944, 1959, 1988, 2015, 2016, 2018

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2023, retrieved on March 24, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings