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, April 1978

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
April 1978 1-Month	52.1°F (11.2°C)	51.3°F (10.7°C)	0.8°F (0.5°C)	78th Coolest	Coolest since: 1975	2018
	52.1°F (11.2°C)	51.3°F (10.7°C)	0.8°F (0.5°C)	51st Warmest	Warmest since: 1977	2010
	Ties: 1932, 1965, 1998, 2002
Mar–Apr 1978 2-Month	42.2°F (5.7°C)	45.3°F (7.4°C)	-3.1°F (-1.7°C)	20th Coolest	Coolest since: 1975	1960
	42.2°F (5.7°C)	45.3°F (7.4°C)	-3.1°F (-1.7°C)	109th Warmest	Warmest since: 1977	2012
	Ties: 2014
Feb–Apr 1978 3-Month	33.4°F (0.8°C)	39.5°F (4.2°C)	-6.1°F (-3.4°C)	2nd Coolest	Coolest since: 1899	1899
Feb–Apr 1978 3-Month	33.4°F (0.8°C)	39.5°F (4.2°C)	-6.1°F (-3.4°C)	127th Warmest	Warmest since: 1977	2012
Jan–Apr 1978 4-Month	28.6°F (-1.9°C)	35.6°F (2.0°C)	-7.0°F (-3.9°C)	3rd Coolest	Coolest since: 1912	1912
Jan–Apr 1978 4-Month	28.6°F (-1.9°C)	35.6°F (2.0°C)	-7.0°F (-3.9°C)	126th Warmest	Warmest since: 1977	2012
Dec 1977–Apr 1978 5-Month	27.7°F (-2.4°C)	34.1°F (1.2°C)	-6.4°F (-3.6°C)	1st Coolest	Coolest since: 1978	1978
Dec 1977–Apr 1978 5-Month	27.7°F (-2.4°C)	34.1°F (1.2°C)	-6.4°F (-3.6°C)	127th Warmest	Warmest since: 1977	2012
Nov 1977–Apr 1978 6-Month	29.8°F (-1.2°C)	35.1°F (1.7°C)	-5.3°F (-2.9°C)	1st Coolest	Coolest since: 1912	1904, 1912, 1978
	29.8°F (-1.2°C)	35.1°F (1.7°C)	-5.3°F (-2.9°C)	127th Warmest	Warmest since: 1977	2012
	Ties: 1904, 1912
Oct 1977–Apr 1978 7-Month	33.0°F (0.6°C)	37.9°F (3.3°C)	-4.9°F (-2.7°C)	2nd Coolest	Coolest since: 1912	1912
Oct 1977–Apr 1978 7-Month	33.0°F (0.6°C)	37.9°F (3.3°C)	-4.9°F (-2.7°C)	126th Warmest	Warmest since: 1977	2012
Sep 1977–Apr 1978 8-Month	37.2°F (2.9°C)	41.4°F (5.2°C)	-4.2°F (-2.3°C)	1st Coolest	Coolest since: 1904	1904, 1978
	37.2°F (2.9°C)	41.4°F (5.2°C)	-4.2°F (-2.3°C)	127th Warmest	Warmest since: 1977	2017
	Ties: 1904
Aug 1977–Apr 1978 9-Month	41.0°F (5.0°C)	45.1°F (7.3°C)	-4.1°F (-2.3°C)	1st Coolest	Coolest since: 1978	1978
Aug 1977–Apr 1978 9-Month	41.0°F (5.0°C)	45.1°F (7.3°C)	-4.1°F (-2.3°C)	127th Warmest	Warmest since: 1977	2017
Jul 1977–Apr 1978 10-Month	44.7°F (7.1°C)	48.1°F (8.9°C)	-3.4°F (-1.8°C)	2nd Coolest	Coolest since: 1904	1904
Jul 1977–Apr 1978 10-Month	44.7°F (7.1°C)	48.1°F (8.9°C)	-3.4°F (-1.8°C)	126th Warmest	Warmest since: 1977	2012
Jun 1977–Apr 1978 11-Month	47.1°F (8.4°C)	50.2°F (10.1°C)	-3.1°F (-1.7°C)	3rd Coolest	Coolest since: 1918	1904
Jun 1977–Apr 1978 11-Month	47.1°F (8.4°C)	50.2°F (10.1°C)	-3.1°F (-1.7°C)	125th Warmest	Warmest since: 1977	2017
May 1977–Apr 1978 12-Month	48.9°F (9.4°C)	51.2°F (10.7°C)	-2.3°F (-1.3°C)	8th Coolest	Coolest since: 1977	1918
	48.9°F (9.4°C)	51.2°F (10.7°C)	-2.3°F (-1.3°C)	120th Warmest	Warmest since: 1976	2017
	Ties: 1982
Nov 1976–Apr 1978 18-Month	43.5°F (6.4°C)	45.9°F (7.7°C)	-2.4°F (-1.3°C)	5th Coolest	Coolest since: 1918	1979
Nov 1976–Apr 1978 18-Month	43.5°F (6.4°C)	45.9°F (7.7°C)	-2.4°F (-1.3°C)	122nd Warmest	Warmest since: 1977	2017
May 1976–Apr 1978 24-Month	48.8°F (9.3°C)	51.2°F (10.7°C)	-2.4°F (-1.4°C)	2nd Coolest	Coolest since: 1905	1905
May 1976–Apr 1978 24-Month	48.8°F (9.3°C)	51.2°F (10.7°C)	-2.4°F (-1.4°C)	125th Warmest	Warmest since: 1977	2017
May 1975–Apr 1978 36-Month	50.3°F (10.2°C)	51.2°F (10.7°C)	-0.9°F (-0.5°C)	11th Coolest	Coolest since: 1971	1979
	50.3°F (10.2°C)	51.2°F (10.7°C)	-0.9°F (-0.5°C)	115th Warmest	Warmest since: 1977	2018
	Ties: 1920
May 1974–Apr 1978 48-Month	50.1°F (10.1°C)	51.2°F (10.7°C)	-1.1°F (-0.6°C)	7th Coolest	Coolest since: 1971	1980
	50.1°F (10.1°C)	51.2°F (10.7°C)	-1.1°F (-0.6°C)	118th Warmest	Warmest since: 1977	1935
	Ties: 1918, 1970
May 1973–Apr 1978 60-Month	50.5°F (10.3°C)	51.2°F (10.7°C)	-0.7°F (-0.4°C)	16th Coolest	Coolest since: 1972	1906, 1979
	50.5°F (10.3°C)	51.2°F (10.7°C)	-0.7°F (-0.4°C)	108th Warmest	Warmest since: 1977	1935
	Ties: 1904

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on January 27, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings