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, May 1941

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 1941 1-Month	64.6°F (18.1°C)	61.0°F (16.1°C)	3.6°F (2.0°C)	108th Coolest	Coolest since: 1940	1907
	64.6°F (18.1°C)	61.0°F (16.1°C)	3.6°F (2.0°C)	21st Warmest	Warmest since: 1936	2018
	Ties: 1936, 2022
Apr–May 1941 2-Month	59.6°F (15.3°C)	55.5°F (13.1°C)	4.1°F (2.2°C)	119th Coolest	Coolest since: 1940	1907
Apr–May 1941 2-Month	59.6°F (15.3°C)	55.5°F (13.1°C)	4.1°F (2.2°C)	10th Warmest	Warmest since: 1896	1977
Mar–May 1941 3-Month	50.9°F (10.5°C)	49.7°F (9.8°C)	1.2°F (0.7°C)	87th Coolest	Coolest since: 1940	1960
	50.9°F (10.5°C)	49.7°F (9.8°C)	1.2°F (0.7°C)	42nd Warmest	Warmest since: 1938	2012
	Ties: 2011
Feb–May 1941 4-Month	44.4°F (6.9°C)	44.2°F (6.8°C)	0.2°F (0.1°C)	70th Coolest	Coolest since: 1940	1978
	44.4°F (6.9°C)	44.2°F (6.8°C)	0.2°F (0.1°C)	59th Warmest	Warmest since: 1938	2012
	Ties: 1898, 1910, 1931, 1944, 1970
Jan–May 1941 5-Month	40.9°F (4.9°C)	40.1°F (4.5°C)	0.8°F (0.4°C)	82nd Coolest	Coolest since: 1940	1978
	40.9°F (4.9°C)	40.1°F (4.5°C)	0.8°F (0.4°C)	47th Warmest	Warmest since: 1939	2012
	Ties: 1977, 1983
Dec 1940–May 1941 6-Month	39.6°F (4.2°C)	38.1°F (3.4°C)	1.5°F (0.8°C)	93rd Coolest	Coolest since: 1940	1978
	39.6°F (4.2°C)	38.1°F (3.4°C)	1.5°F (0.8°C)	35th Warmest	Warmest since: 1938	2012
	Ties: 1973, 1990
Nov 1940–May 1941 7-Month	39.2°F (4.0°C)	38.3°F (3.5°C)	0.9°F (0.5°C)	86th Coolest	Coolest since: 1940	1904
	39.2°F (4.0°C)	38.3°F (3.5°C)	0.9°F (0.5°C)	42nd Warmest	Warmest since: 1939	2012
	Ties: 1973, 1986
Oct 1940–May 1941 8-Month	41.4°F (5.2°C)	40.2°F (4.6°C)	1.2°F (0.6°C)	92nd Coolest	Coolest since: 1940	1904
	41.4°F (5.2°C)	40.2°F (4.6°C)	1.2°F (0.6°C)	36th Warmest	Warmest since: 1939	2012
	Ties: 1922, 1990, 2013
Sep 1940–May 1941 9-Month	43.9°F (6.6°C)	43.0°F (6.1°C)	0.9°F (0.5°C)	89th Coolest	Coolest since: 1940	1904
	43.9°F (6.6°C)	43.0°F (6.1°C)	0.9°F (0.5°C)	39th Warmest	Warmest since: 1939	2012
	Ties: 1928, 1931, 1946, 2013
Aug 1940–May 1941 10-Month	46.9°F (8.3°C)	45.9°F (7.7°C)	1.0°F (0.6°C)	94th Coolest	Coolest since: 1940	1904
	46.9°F (8.3°C)	45.9°F (7.7°C)	1.0°F (0.6°C)	34th Warmest	Warmest since: 1939	2012
	Ties: 1931, 1948, 1957
Jul 1940–May 1941 11-Month	49.5°F (9.7°C)	48.5°F (9.2°C)	1.0°F (0.5°C)	95th Coolest	Coolest since: 1940	1904
	49.5°F (9.7°C)	48.5°F (9.2°C)	1.0°F (0.5°C)	33rd Warmest	Warmest since: 1939	2012
	Ties: 1914, 1953, 1983
Jun 1940–May 1941 12-Month	51.3°F (10.7°C)	50.3°F (10.2°C)	1.0°F (0.5°C)	92nd Coolest	Coolest since: 1940	1904
	51.3°F (10.7°C)	50.3°F (10.2°C)	1.0°F (0.5°C)	36th Warmest	Warmest since: 1939	2012
	Ties: 1931, 1937, 1989
Dec 1939–May 1941 18-Month	46.1°F (7.8°C)	46.3°F (7.9°C)	-0.2°F (-0.1°C)	55th Coolest	Coolest since: 1937	1905
	46.1°F (7.8°C)	46.3°F (7.9°C)	-0.2°F (-0.1°C)	72nd Warmest	Warmest since: 1940	2017
	Ties: 1948, 2009
Jun 1939–May 1941 24-Month	50.4°F (10.2°C)	50.3°F (10.2°C)	0.1°F (0.0°C)	59th Coolest	Coolest since: 1937	1905
	50.4°F (10.2°C)	50.3°F (10.2°C)	0.1°F (0.0°C)	68th Warmest	Warmest since: 1940	2017
	Ties: 1981, 1984
Jun 1938–May 1941 36-Month	50.9°F (10.5°C)	50.3°F (10.2°C)	0.6°F (0.3°C)	81st Coolest	Coolest since: 1940	1905, 1906
Jun 1938–May 1941 36-Month	50.9°F (10.5°C)	50.3°F (10.2°C)	0.6°F (0.3°C)	45th Warmest	Warmest since: 1939	2018
Jun 1937–May 1941 48-Month	50.9°F (10.5°C)	50.3°F (10.2°C)	0.6°F (0.3°C)	82nd Coolest	Coolest since: 1940	1905
	50.9°F (10.5°C)	50.3°F (10.2°C)	0.6°F (0.3°C)	43rd Warmest	Warmest since: 1940	2019
	Ties: 1940, 1944, 1974, 1976, 2011
Jun 1936–May 1941 60-Month	51.0°F (10.6°C)	50.3°F (10.2°C)	0.7°F (0.4°C)	83rd Coolest	Coolest since: 1940	1905, 1906, 1908
	51.0°F (10.6°C)	50.3°F (10.2°C)	0.7°F (0.4°C)	41st Warmest	Warmest since: 1936	2020
	Ties: 1955, 1976, 2011

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