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 8. Southwest

Average Temperature Rankings, April 1941

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
April 1941 1-Month	59.1°F (15.1°C)	55.3°F (12.9°C)	3.8°F (2.2°C)	114th Coolest	Coolest since: 1940	1907
	59.1°F (15.1°C)	55.3°F (12.9°C)	3.8°F (2.2°C)	15th Warmest	Warmest since: 1925	1896
	Ties: 1985, 1986, 2011
Mar–Apr 1941 2-Month	49.2°F (9.6°C)	49.9°F (9.9°C)	-0.7°F (-0.3°C)	50th Coolest	Coolest since: 1940	1926, 1960
	49.2°F (9.6°C)	49.9°F (9.9°C)	-0.7°F (-0.3°C)	79th Warmest	Warmest since: 1939	2012
	Ties: 1898, 1956, 2008
Feb–Apr 1941 3-Month	43.3°F (6.3°C)	44.9°F (7.2°C)	-1.6°F (-0.9°C)	35th Coolest	Coolest since: 1940	1899
	43.3°F (6.3°C)	44.9°F (7.2°C)	-1.6°F (-0.9°C)	94th Warmest	Warmest since: 1940	2012
	Ties: 1940, 2013
Jan–Apr 1941 4-Month	41.0°F (5.0°C)	41.4°F (5.2°C)	-0.4°F (-0.2°C)	51st Coolest	Coolest since: 1940	1978
	41.0°F (5.0°C)	41.4°F (5.2°C)	-0.4°F (-0.2°C)	78th Warmest	Warmest since: 1939	2012
	Ties: 1897, 1934
Dec 1940–Apr 1941 5-Month	40.7°F (4.8°C)	40.0°F (4.4°C)	0.7°F (0.4°C)	70th Coolest	Coolest since: 1940	1978
	40.7°F (4.8°C)	40.0°F (4.4°C)	0.7°F (0.4°C)	58th Warmest	Warmest since: 1939	2012
	Ties: 1934
Nov 1940–Apr 1941 6-Month	41.1°F (5.1°C)	40.9°F (4.9°C)	0.2°F (0.2°C)	64th Coolest	Coolest since: 1940	1912
	41.1°F (5.1°C)	40.9°F (4.9°C)	0.2°F (0.2°C)	64th Warmest	Warmest since: 1939	2012
	Ties: 1933, 2011
Oct 1940–Apr 1941 7-Month	44.1°F (6.7°C)	43.2°F (6.2°C)	0.9°F (0.5°C)	88th Coolest	Coolest since: 1940	1899, 1978
	44.1°F (6.7°C)	43.2°F (6.2°C)	0.9°F (0.5°C)	40th Warmest	Warmest since: 1939	2012
	Ties: 1898, 1909, 1922
Sep 1940–Apr 1941 8-Month	47.2°F (8.4°C)	46.5°F (8.1°C)	0.7°F (0.3°C)	85th Coolest	Coolest since: 1940	1918
	47.2°F (8.4°C)	46.5°F (8.1°C)	0.7°F (0.3°C)	43rd Warmest	Warmest since: 1939	2017
	Ties: 1953, 1967, 1990
Aug 1940–Apr 1941 9-Month	50.4°F (10.2°C)	49.7°F (9.8°C)	0.7°F (0.4°C)	82nd Coolest	Coolest since: 1940	1918
	50.4°F (10.2°C)	49.7°F (9.8°C)	0.7°F (0.4°C)	46th Warmest	Warmest since: 1939	2017
	Ties: 1907, 1927, 1937, 1953, 1990, 2021
Jul 1940–Apr 1941 10-Month	53.1°F (11.7°C)	52.6°F (11.4°C)	0.5°F (0.3°C)	75th Coolest	Coolest since: 1940	1918
Jul 1940–Apr 1941 10-Month	53.1°F (11.7°C)	52.6°F (11.4°C)	0.5°F (0.3°C)	53rd Warmest	Warmest since: 1939	2012
Jun 1940–Apr 1941 11-Month	55.0°F (12.8°C)	54.5°F (12.5°C)	0.5°F (0.3°C)	77th Coolest	Coolest since: 1940	1918
	55.0°F (12.8°C)	54.5°F (12.5°C)	0.5°F (0.3°C)	51st Warmest	Warmest since: 1939	2012, 2017
	Ties: 1927, 1948, 1967, 2003
May 1940–Apr 1941 12-Month	55.6°F (13.1°C)	55.4°F (13.0°C)	0.2°F (0.1°C)	70th Coolest	Coolest since: 1940	1918
	55.6°F (13.1°C)	55.4°F (13.0°C)	0.2°F (0.1°C)	58th Warmest	Warmest since: 1939	2012, 2017
	Ties: 1907, 1948, 1967, 1983, 2003, 2018
Nov 1939–Apr 1941 18-Month	49.6°F (9.8°C)	50.5°F (10.3°C)	-0.9°F (-0.5°C)	22nd Coolest	Coolest since: 1918	1979
	49.6°F (9.8°C)	50.5°F (10.3°C)	-0.9°F (-0.5°C)	105th Warmest	Warmest since: 1940	2017
	Ties: 1903, 1951, 1959, 1985
May 1939–Apr 1941 24-Month	55.1°F (12.8°C)	55.4°F (13.0°C)	-0.3°F (-0.2°C)	36th Coolest	Coolest since: 1937	1978
	55.1°F (12.8°C)	55.4°F (13.0°C)	-0.3°F (-0.2°C)	91st Warmest	Warmest since: 1940	2017
	Ties: 1902, 1903, 1925, 1984
May 1938–Apr 1941 36-Month	55.7°F (13.2°C)	55.3°F (12.9°C)	0.4°F (0.3°C)	73rd Coolest	Coolest since: 1938	1979
	55.7°F (13.2°C)	55.3°F (12.9°C)	0.4°F (0.3°C)	53rd Warmest	Warmest since: 1940	2018
	Ties: 1916, 1947, 1950
May 1937–Apr 1941 48-Month	55.9°F (13.3°C)	55.3°F (12.9°C)	0.6°F (0.4°C)	84th Coolest	Coolest since: 1939	1980
	55.9°F (13.3°C)	55.3°F (12.9°C)	0.6°F (0.4°C)	41st Warmest	Warmest since: 1940	2019
	Ties: 1925, 1936, 1944, 1988, 2010, 2016
May 1936–Apr 1941 60-Month	56.1°F (13.4°C)	55.4°F (13.0°C)	0.7°F (0.4°C)	92nd Coolest	Coolest since: 1940	1980, 1981
	56.1°F (13.4°C)	55.4°F (13.0°C)	0.7°F (0.4°C)	32nd Warmest	Warmest since: 1939	2020
	Ties: 1925, 1937, 1955, 1991, 2000, 2005, 2011

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on February 1, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings