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 7. East Southeast

Average Temperature Rankings, May 1978

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 1978 1-Month	61.0°F (16.1°C)	63.2°F (17.3°C)	-2.2°F (-1.2°C)	35th Coolest	Coolest since: 1976	1924
	61.0°F (16.1°C)	63.2°F (17.3°C)	-2.2°F (-1.2°C)	94th Warmest	Warmest since: 1977	2018
	Ties: 1923
Apr–May 1978 2-Month	57.6°F (14.2°C)	58.0°F (14.4°C)	-0.4°F (-0.2°C)	46th Coolest	Coolest since: 1976	1907
	57.6°F (14.2°C)	58.0°F (14.4°C)	-0.4°F (-0.2°C)	83rd Warmest	Warmest since: 1977	1896
	Ties: 1939
Mar–May 1978 3-Month	49.9°F (9.9°C)	52.5°F (11.4°C)	-2.6°F (-1.5°C)	7th Coolest	Coolest since: 1960	1960
Mar–May 1978 3-Month	49.9°F (9.9°C)	52.5°F (11.4°C)	-2.6°F (-1.5°C)	122nd Warmest	Warmest since: 1977	2012
Feb–May 1978 4-Month	42.0°F (5.6°C)	47.3°F (8.5°C)	-5.3°F (-2.9°C)	1st Coolest	Coolest since: 1978	1978
Feb–May 1978 4-Month	42.0°F (5.6°C)	47.3°F (8.5°C)	-5.3°F (-2.9°C)	128th Warmest	Warmest since: 1977	2012
Jan–May 1978 5-Month	37.0°F (2.8°C)	43.4°F (6.3°C)	-6.4°F (-3.5°C)	1st Coolest	Coolest since: 1978	1978
Jan–May 1978 5-Month	37.0°F (2.8°C)	43.4°F (6.3°C)	-6.4°F (-3.5°C)	128th Warmest	Warmest since: 1977	2012
Dec 1977–May 1978 6-Month	35.5°F (1.9°C)	41.4°F (5.2°C)	-5.9°F (-3.3°C)	1st Coolest	Coolest since: 1978	1978
Dec 1977–May 1978 6-Month	35.5°F (1.9°C)	41.4°F (5.2°C)	-5.9°F (-3.3°C)	127th Warmest	Warmest since: 1977	2012
Nov 1977–May 1978 7-Month	36.7°F (2.6°C)	41.6°F (5.3°C)	-4.9°F (-2.7°C)	1st Coolest	Coolest since: 1978	1978
Nov 1977–May 1978 7-Month	36.7°F (2.6°C)	41.6°F (5.3°C)	-4.9°F (-2.7°C)	127th Warmest	Warmest since: 1977	2012
Oct 1977–May 1978 8-Month	38.7°F (3.7°C)	43.3°F (6.3°C)	-4.6°F (-2.6°C)	1st Coolest	Coolest since: 1978	1978
Oct 1977–May 1978 8-Month	38.7°F (3.7°C)	43.3°F (6.3°C)	-4.6°F (-2.6°C)	127th Warmest	Warmest since: 1977	2012
Sep 1977–May 1978 9-Month	42.1°F (5.6°C)	46.0°F (7.8°C)	-3.9°F (-2.2°C)	1st Coolest	Coolest since: 1978	1978
Sep 1977–May 1978 9-Month	42.1°F (5.6°C)	46.0°F (7.8°C)	-3.9°F (-2.2°C)	127th Warmest	Warmest since: 1977	2012
Aug 1977–May 1978 10-Month	45.2°F (7.3°C)	48.8°F (9.3°C)	-3.6°F (-2.0°C)	1st Coolest	Coolest since: 1978	1978
Aug 1977–May 1978 10-Month	45.2°F (7.3°C)	48.8°F (9.3°C)	-3.6°F (-2.0°C)	127th Warmest	Warmest since: 1977	2012
Jul 1977–May 1978 11-Month	48.2°F (9.0°C)	51.3°F (10.7°C)	-3.1°F (-1.7°C)	2nd Coolest	Coolest since: 1904	1904
Jul 1977–May 1978 11-Month	48.2°F (9.0°C)	51.3°F (10.7°C)	-3.1°F (-1.7°C)	126th Warmest	Warmest since: 1977	2012
Jun 1977–May 1978 12-Month	50.1°F (10.1°C)	53.1°F (11.7°C)	-3.0°F (-1.6°C)	2nd Coolest	Coolest since: 1918	1904
	50.1°F (10.1°C)	53.1°F (11.7°C)	-3.0°F (-1.6°C)	126th Warmest	Warmest since: 1977	2012
	Ties: 1918
Dec 1976–May 1978 18-Month	46.8°F (8.2°C)	49.1°F (9.5°C)	-2.3°F (-1.3°C)	4th Coolest	Coolest since: 1918	1979
Dec 1976–May 1978 18-Month	46.8°F (8.2°C)	49.1°F (9.5°C)	-2.3°F (-1.3°C)	123rd Warmest	Warmest since: 1977	2017
Jun 1976–May 1978 24-Month	50.4°F (10.2°C)	53.1°F (11.7°C)	-2.7°F (-1.5°C)	1st Coolest	Coolest since: 1905	1905, 1978
	50.4°F (10.2°C)	53.1°F (11.7°C)	-2.7°F (-1.5°C)	126th Warmest	Warmest since: 1977	2017
	Ties: 1905
Jun 1975–May 1978 36-Month	51.7°F (10.9°C)	53.1°F (11.7°C)	-1.4°F (-0.8°C)	7th Coolest	Coolest since: 1970	1979
	51.7°F (10.9°C)	53.1°F (11.7°C)	-1.4°F (-0.8°C)	119th Warmest	Warmest since: 1977	2018
	Ties: 1904
Jun 1974–May 1978 48-Month	51.9°F (11.1°C)	53.1°F (11.7°C)	-1.2°F (-0.6°C)	8th Coolest	Coolest since: 1971	1980
Jun 1974–May 1978 48-Month	51.9°F (11.1°C)	53.1°F (11.7°C)	-1.2°F (-0.6°C)	117th Warmest	Warmest since: 1977	2019
Jun 1973–May 1978 60-Month	52.4°F (11.3°C)	53.0°F (11.7°C)	-0.6°F (-0.4°C)	16th Coolest	Coolest since: 1972	1981
	52.4°F (11.3°C)	53.0°F (11.7°C)	-0.6°F (-0.4°C)	108th Warmest	Warmest since: 1977	2020
	Ties: 1919, 1962

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on February 7, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings