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 1939

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2023)	Warmest/Coolest Since	Record
April 1939 1-Month	52.4°F (11.3°C)	55.3°F (12.9°C)	-2.9°F (-1.6°C)	20th Coolest	Coolest since: 1936	1907
April 1939 1-Month	52.4°F (11.3°C)	55.3°F (12.9°C)	-2.9°F (-1.6°C)	110th Warmest	Warmest since: 1938	1896
Mar–Apr 1939 2-Month	50.0°F (10.0°C)	50.0°F (10.0°C)	0.0°F (0.0°C)	63rd Coolest	Coolest since: 1937	1960
	50.0°F (10.0°C)	50.0°F (10.0°C)	0.0°F (0.0°C)	67th Warmest	Warmest since: 1938	2012
	Ties: 1998
Feb–Apr 1939 3-Month	44.6°F (7.0°C)	44.9°F (7.2°C)	-0.3°F (-0.2°C)	55th Coolest	Coolest since: 1937	1899
	44.6°F (7.0°C)	44.9°F (7.2°C)	-0.3°F (-0.2°C)	75th Warmest	Warmest since: 1938	2012
	Ties: 1898, 1907
Jan–Apr 1939 4-Month	43.0°F (6.1°C)	41.5°F (5.3°C)	1.5°F (0.8°C)	91st Coolest	Coolest since: 1937	1978
Jan–Apr 1939 4-Month	43.0°F (6.1°C)	41.5°F (5.3°C)	1.5°F (0.8°C)	39th Warmest	Warmest since: 1938	2012
Dec 1938–Apr 1939 5-Month	41.5°F (5.3°C)	40.1°F (4.5°C)	1.4°F (0.8°C)	90th Coolest	Coolest since: 1937	1978
	41.5°F (5.3°C)	40.1°F (4.5°C)	1.4°F (0.8°C)	39th Warmest	Warmest since: 1938	2012
	Ties: 1896, 1942, 1990
Nov 1938–Apr 1939 6-Month	42.3°F (5.7°C)	40.9°F (4.9°C)	1.4°F (0.8°C)	96th Coolest	Coolest since: 1937	1912
	42.3°F (5.7°C)	40.9°F (4.9°C)	1.4°F (0.8°C)	33rd Warmest	Warmest since: 1938	2012
	Ties: 1981
Oct 1938–Apr 1939 7-Month	45.1°F (7.3°C)	43.2°F (6.2°C)	1.9°F (1.1°C)	104th Coolest	Coolest since: 1938	1899, 1978
Oct 1938–Apr 1939 7-Month	45.1°F (7.3°C)	43.2°F (6.2°C)	1.9°F (1.1°C)	25th Warmest	Warmest since: 1935	2012
Sep 1938–Apr 1939 8-Month	48.4°F (9.1°C)	46.5°F (8.1°C)	1.9°F (1.0°C)	109th Coolest	Coolest since: 1938	1918
	48.4°F (9.1°C)	46.5°F (8.1°C)	1.9°F (1.0°C)	20th Warmest	Warmest since: 1932	2017
	Ties: 1946
Aug 1938–Apr 1939 9-Month	51.9°F (11.1°C)	49.8°F (9.9°C)	2.1°F (1.2°C)	118th Coolest	Coolest since: 1938	1918
Aug 1938–Apr 1939 9-Month	51.9°F (11.1°C)	49.8°F (9.9°C)	2.1°F (1.2°C)	11th Warmest	Warmest since: 1932	2017
Jul 1938–Apr 1939 10-Month	54.6°F (12.6°C)	52.6°F (11.4°C)	2.0°F (1.2°C)	118th Coolest	Coolest since: 1938	1918
	54.6°F (12.6°C)	52.6°F (11.4°C)	2.0°F (1.2°C)	11th Warmest	Warmest since: 1932	2012
	Ties: 1921, 2023
Jun 1938–Apr 1939 11-Month	56.2°F (13.4°C)	54.5°F (12.5°C)	1.7°F (0.9°C)	114th Coolest	Coolest since: 1938	1918
	56.2°F (13.4°C)	54.5°F (12.5°C)	1.7°F (0.9°C)	15th Warmest	Warmest since: 1935	2012, 2017
	Ties: 1921, 1974, 2020, 2022
May 1938–Apr 1939 12-Month	56.9°F (13.8°C)	55.4°F (13.0°C)	1.5°F (0.8°C)	111th Coolest	Coolest since: 1938	1918
	56.9°F (13.8°C)	55.4°F (13.0°C)	1.5°F (0.8°C)	18th Warmest	Warmest since: 1937	2012, 2017
	Ties: 1937, 1976, 2022
Nov 1937–Apr 1939 18-Month	52.3°F (11.3°C)	50.5°F (10.3°C)	1.8°F (1.0°C)	112th Coolest	Coolest since: 1938	1905, 1979
	52.3°F (11.3°C)	50.5°F (10.3°C)	1.8°F (1.0°C)	16th Warmest	Warmest since: 1935	2017
	Ties: 1935, 2005, 2007
May 1937–Apr 1939 24-Month	56.7°F (13.7°C)	55.4°F (13.0°C)	1.3°F (0.7°C)	110th Coolest	Coolest since: 1938	1978
May 1937–Apr 1939 24-Month	56.7°F (13.7°C)	55.4°F (13.0°C)	1.3°F (0.7°C)	18th Warmest	Warmest since: 1935	2017
May 1936–Apr 1939 36-Month	56.7°F (13.7°C)	55.4°F (13.0°C)	1.3°F (0.7°C)	110th Coolest	Coolest since: 1938	1979
	56.7°F (13.7°C)	55.4°F (13.0°C)	1.3°F (0.7°C)	17th Warmest	Warmest since: 1935	2018
	Ties: 1923, 2021, 2022
May 1935–Apr 1939 48-Month	55.8°F (13.2°C)	55.3°F (12.9°C)	0.5°F (0.3°C)	77th Coolest	Coolest since: 1931	1980
	55.8°F (13.2°C)	55.3°F (12.9°C)	0.5°F (0.3°C)	49th Warmest	Warmest since: 1938	2019
	Ties: 1954, 1958, 1974, 1993
May 1934–Apr 1939 60-Month	56.2°F (13.4°C)	55.3°F (12.9°C)	0.9°F (0.5°C)	97th Coolest	Coolest since: 1938	1980, 1981
	56.2°F (13.4°C)	55.3°F (12.9°C)	0.9°F (0.5°C)	28th Warmest	Warmest since: 1938	2020
	Ties: 1938, 1942, 1958, 2015

Citing This Page

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