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 1939

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 1939 1-Month	64.3°F (17.9°C)	61.0°F (16.1°C)	3.3°F (1.8°C)	101st Coolest	Coolest since: 1938	1907
May 1939 1-Month	64.3°F (17.9°C)	61.0°F (16.1°C)	3.3°F (1.8°C)	28th Warmest	Warmest since: 1936	2018
Apr–May 1939 2-Month	55.1°F (12.8°C)	55.4°F (13.0°C)	-0.3°F (-0.2°C)	46th Coolest	Coolest since: 1937	1907
	55.1°F (12.8°C)	55.4°F (13.0°C)	-0.3°F (-0.2°C)	83rd Warmest	Warmest since: 1938	1977
	Ties: 1905
Mar–May 1939 3-Month	49.9°F (9.9°C)	49.7°F (9.8°C)	0.2°F (0.1°C)	62nd Coolest	Coolest since: 1937	1960
	49.9°F (9.9°C)	49.7°F (9.8°C)	0.2°F (0.1°C)	67th Warmest	Warmest since: 1938	2012
	Ties: 1898, 1934, 1956
Feb–May 1939 4-Month	44.3°F (6.8°C)	44.1°F (6.7°C)	0.2°F (0.1°C)	62nd Coolest	Coolest since: 1937	1978
	44.3°F (6.8°C)	44.1°F (6.7°C)	0.2°F (0.1°C)	67th Warmest	Warmest since: 1938	2012
	Ties: 1908, 1919
Jan–May 1939 5-Month	41.6°F (5.3°C)	40.1°F (4.5°C)	1.5°F (0.8°C)	94th Coolest	Coolest since: 1937	1978
	41.6°F (5.3°C)	40.1°F (4.5°C)	1.5°F (0.8°C)	35th Warmest	Warmest since: 1938	2012
	Ties: 1925, 1930, 1931, 1944, 2010
Dec 1938–May 1939 6-Month	39.5°F (4.2°C)	38.1°F (3.4°C)	1.4°F (0.8°C)	90th Coolest	Coolest since: 1937	1978
Dec 1938–May 1939 6-Month	39.5°F (4.2°C)	38.1°F (3.4°C)	1.4°F (0.8°C)	38th Warmest	Warmest since: 1938	2012
Nov 1938–May 1939 7-Month	39.9°F (4.4°C)	38.3°F (3.5°C)	1.6°F (0.9°C)	99th Coolest	Coolest since: 1938	1904
	39.9°F (4.4°C)	38.3°F (3.5°C)	1.6°F (0.9°C)	29th Warmest	Warmest since: 1932	2012
	Ties: 1985, 2013, 2022
Oct 1938–May 1939 8-Month	42.1°F (5.6°C)	40.3°F (4.6°C)	1.8°F (1.0°C)	106th Coolest	Coolest since: 1938	1904
	42.1°F (5.6°C)	40.3°F (4.6°C)	1.8°F (1.0°C)	22nd Warmest	Warmest since: 1932	2012
	Ties: 1919, 1983
Sep 1938–May 1939 9-Month	44.8°F (7.1°C)	43.0°F (6.1°C)	1.8°F (1.0°C)	106th Coolest	Coolest since: 1938	1904
	44.8°F (7.1°C)	43.0°F (6.1°C)	1.8°F (1.0°C)	22nd Warmest	Warmest since: 1932	2012
	Ties: 1976
Aug 1938–May 1939 10-Month	47.8°F (8.8°C)	45.9°F (7.7°C)	1.9°F (1.1°C)	110th Coolest	Coolest since: 1938	1904
	47.8°F (8.8°C)	45.9°F (7.7°C)	1.9°F (1.1°C)	18th Warmest	Warmest since: 1932	2012
	Ties: 1955
Jul 1938–May 1939 11-Month	50.3°F (10.2°C)	48.5°F (9.2°C)	1.8°F (1.0°C)	110th Coolest	Coolest since: 1938	1904
	50.3°F (10.2°C)	48.5°F (9.2°C)	1.8°F (1.0°C)	18th Warmest	Warmest since: 1932	2012
	Ties: 2004
Jun 1938–May 1939 12-Month	51.8°F (11.0°C)	50.3°F (10.2°C)	1.5°F (0.8°C)	108th Coolest	Coolest since: 1938	1904
	51.8°F (11.0°C)	50.3°F (10.2°C)	1.5°F (0.8°C)	20th Warmest	Warmest since: 1932	2012
	Ties: 1976
Dec 1937–May 1939 18-Month	48.1°F (8.9°C)	46.3°F (7.9°C)	1.8°F (1.0°C)	111th Coolest	Coolest since: 1938	1905
	48.1°F (8.9°C)	46.3°F (7.9°C)	1.8°F (1.0°C)	16th Warmest	Warmest since: 1932	2017
	Ties: 1988, 2022
Jun 1937–May 1939 24-Month	51.3°F (10.7°C)	50.3°F (10.2°C)	1.0°F (0.5°C)	98th Coolest	Coolest since: 1938	1905
	51.3°F (10.7°C)	50.3°F (10.2°C)	1.0°F (0.5°C)	29th Warmest	Warmest since: 1935	2017
	Ties: 1950, 2002, 2004
Jun 1936–May 1939 36-Month	51.3°F (10.7°C)	50.3°F (10.2°C)	1.0°F (0.5°C)	94th Coolest	Coolest since: 1938	1905, 1906
	51.3°F (10.7°C)	50.3°F (10.2°C)	1.0°F (0.5°C)	32nd Warmest	Warmest since: 1935	2018
	Ties: 1922, 1954, 2005
Jun 1935–May 1939 48-Month	50.6°F (10.3°C)	50.3°F (10.2°C)	0.3°F (0.1°C)	67th Coolest	Coolest since: 1938	1905
	50.6°F (10.3°C)	50.3°F (10.2°C)	0.3°F (0.1°C)	58th Warmest	Warmest since: 1937	2019
	Ties: 1936, 1943, 1954
Jun 1934–May 1939 60-Month	50.8°F (10.4°C)	50.3°F (10.2°C)	0.5°F (0.2°C)	75th Coolest	Coolest since: 1938	1905, 1906, 1908
	50.8°F (10.4°C)	50.3°F (10.2°C)	0.5°F (0.2°C)	49th Warmest	Warmest since: 1938	2020
	Ties: 1924, 1937, 1938, 1943

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on February 4, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings