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, June 1978

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
June 1978 1-Month	74.0°F (23.3°C)	73.9°F (23.3°C)	0.1°F (0.0°C)	55th Coolest	Coolest since: 1976	1903
	74.0°F (23.3°C)	73.9°F (23.3°C)	0.1°F (0.0°C)	74th Warmest	Warmest since: 1977	1952
	Ties: 1897, 1937, 1942, 1948, 1959, 1965, 1996
May–Jun 1978 2-Month	68.8°F (20.4°C)	69.5°F (20.8°C)	-0.7°F (-0.4°C)	41st Coolest	Coolest since: 1976	1907
	68.8°F (20.4°C)	69.5°F (20.8°C)	-0.7°F (-0.4°C)	88th Warmest	Warmest since: 1977	2018
	Ties: 1919, 1948, 1985
Apr–Jun 1978 3-Month	65.0°F (18.3°C)	64.8°F (18.2°C)	0.2°F (0.1°C)	58th Coolest	Coolest since: 1976	1907
	65.0°F (18.3°C)	64.8°F (18.2°C)	0.2°F (0.1°C)	71st Warmest	Warmest since: 1977	2010
	Ties: 1908, 1918, 1967
Mar–Jun 1978 4-Month	58.4°F (14.7°C)	59.7°F (15.4°C)	-1.3°F (-0.7°C)	26th Coolest	Coolest since: 1969	1960
	58.4°F (14.7°C)	59.7°F (15.4°C)	-1.3°F (-0.7°C)	103rd Warmest	Warmest since: 1977	2012
	Ties: 1915, 1931
Feb–Jun 1978 5-Month	51.1°F (10.6°C)	54.8°F (12.7°C)	-3.7°F (-2.1°C)	1st Coolest	Coolest since: 1960	1912, 1960, 1978
	51.1°F (10.6°C)	54.8°F (12.7°C)	-3.7°F (-2.1°C)	128th Warmest	Warmest since: 1977	2012
	Ties: 1912, 1960
Jan–Jun 1978 6-Month	46.0°F (7.8°C)	50.7°F (10.4°C)	-4.7°F (-2.6°C)	1st Coolest	Coolest since: 1912	1912, 1978
	46.0°F (7.8°C)	50.7°F (10.4°C)	-4.7°F (-2.6°C)	128th Warmest	Warmest since: 1977	2012
	Ties: 1912
Dec 1977–Jun 1978 7-Month	44.0°F (6.7°C)	48.4°F (9.1°C)	-4.4°F (-2.4°C)	1st Coolest	Coolest since: 1978	1978
Dec 1977–Jun 1978 7-Month	44.0°F (6.7°C)	48.4°F (9.1°C)	-4.4°F (-2.4°C)	127th Warmest	Warmest since: 1977	2012
Nov 1977–Jun 1978 8-Month	44.3°F (6.8°C)	48.0°F (8.9°C)	-3.7°F (-2.1°C)	2nd Coolest	Coolest since: 1912	1912
Nov 1977–Jun 1978 8-Month	44.3°F (6.8°C)	48.0°F (8.9°C)	-3.7°F (-2.1°C)	126th Warmest	Warmest since: 1977	2012
Oct 1977–Jun 1978 9-Month	45.5°F (7.5°C)	49.1°F (9.5°C)	-3.6°F (-2.0°C)	1st Coolest	Coolest since: 1912	1912, 1978
	45.5°F (7.5°C)	49.1°F (9.5°C)	-3.6°F (-2.0°C)	127th Warmest	Warmest since: 1977	2012
	Ties: 1912
Sep 1977–Jun 1978 10-Month	48.0°F (8.9°C)	51.1°F (10.6°C)	-3.1°F (-1.7°C)	1st Coolest	Coolest since: 1978	1978
Sep 1977–Jun 1978 10-Month	48.0°F (8.9°C)	51.1°F (10.6°C)	-3.1°F (-1.7°C)	127th Warmest	Warmest since: 1977	2012
Aug 1977–Jun 1978 11-Month	50.5°F (10.3°C)	53.3°F (11.8°C)	-2.8°F (-1.5°C)	1st Coolest	Coolest since: 1904	1904, 1978
	50.5°F (10.3°C)	53.3°F (11.8°C)	-2.8°F (-1.5°C)	127th Warmest	Warmest since: 1977	2012
	Ties: 1904
Jul 1977–Jun 1978 12-Month	52.9°F (11.6°C)	55.4°F (13.0°C)	-2.5°F (-1.4°C)	1st Coolest	Coolest since: 1918	1904, 1912, 1918, 1978
	52.9°F (11.6°C)	55.4°F (13.0°C)	-2.5°F (-1.4°C)	127th Warmest	Warmest since: 1977	2012
	Ties: 1904, 1912, 1918
Jan 1977–Jun 1978 18-Month	52.2°F (11.2°C)	53.9°F (12.2°C)	-1.7°F (-1.0°C)	6th Coolest	Coolest since: 1918	1979
	52.2°F (11.2°C)	53.9°F (12.2°C)	-1.7°F (-1.0°C)	122nd Warmest	Warmest since: 1977	2017
	Ties: 1913
Jul 1976–Jun 1978 24-Month	53.1°F (11.7°C)	55.4°F (13.0°C)	-2.3°F (-1.3°C)	1st Coolest	Coolest since: 1978	1978, 1979
	53.1°F (11.7°C)	55.4°F (13.0°C)	-2.3°F (-1.3°C)	126th Warmest	Warmest since: 1977	2017
	Ties: 1979
Jul 1975–Jun 1978 36-Month	54.1°F (12.3°C)	55.4°F (13.0°C)	-1.3°F (-0.7°C)	6th Coolest	Coolest since: 1970	1979
	54.1°F (12.3°C)	55.4°F (13.0°C)	-1.3°F (-0.7°C)	120th Warmest	Warmest since: 1977	2018
	Ties: 1918
Jul 1974–Jun 1978 48-Month	54.3°F (12.4°C)	55.4°F (13.0°C)	-1.1°F (-0.6°C)	8th Coolest	Coolest since: 1971	1980
	54.3°F (12.4°C)	55.4°F (13.0°C)	-1.1°F (-0.6°C)	117th Warmest	Warmest since: 1977	2019
	Ties: 1970
Jul 1973–Jun 1978 60-Month	54.7°F (12.6°C)	55.3°F (12.9°C)	-0.6°F (-0.3°C)	15th Coolest	Coolest since: 1972	1980
	54.7°F (12.6°C)	55.3°F (12.9°C)	-0.6°F (-0.3°C)	109th Warmest	Warmest since: 1977	2020
	Ties: 1904, 1963, 1969

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on February 8, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings