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 1979

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 1979 1-Month	60.7°F (15.9°C)	61.0°F (16.1°C)	-0.3°F (-0.2°C)	56th Coolest	Coolest since: 1978	1907
May 1979 1-Month	60.7°F (15.9°C)	61.0°F (16.1°C)	-0.3°F (-0.2°C)	73rd Warmest	Warmest since: 1977	2018
Apr–May 1979 2-Month	54.2°F (12.3°C)	55.4°F (13.0°C)	-1.2°F (-0.7°C)	31st Coolest	Coolest since: 1973	1907
	54.2°F (12.3°C)	55.4°F (13.0°C)	-1.2°F (-0.7°C)	98th Warmest	Warmest since: 1978	1977
	Ties: 1931, 1968, 1989
Mar–May 1979 3-Month	48.8°F (9.3°C)	49.7°F (9.8°C)	-0.9°F (-0.5°C)	41st Coolest	Coolest since: 1978	1960
	48.8°F (9.3°C)	49.7°F (9.8°C)	-0.9°F (-0.5°C)	88th Warmest	Warmest since: 1977	2012
	Ties: 1915, 2013
Feb–May 1979 4-Month	40.3°F (4.6°C)	44.1°F (6.7°C)	-3.8°F (-2.1°C)	6th Coolest	Coolest since: 1978	1978
	40.3°F (4.6°C)	44.1°F (6.7°C)	-3.8°F (-2.1°C)	123rd Warmest	Warmest since: 1977	2012
	Ties: 1912
Jan–May 1979 5-Month	34.6°F (1.4°C)	40.1°F (4.5°C)	-5.5°F (-3.1°C)	2nd Coolest	Coolest since: 1978	1978
	34.6°F (1.4°C)	40.1°F (4.5°C)	-5.5°F (-3.1°C)	127th Warmest	Warmest since: 1977	2012
	Ties: 1912
Dec 1978–May 1979 6-Month	33.6°F (0.9°C)	38.1°F (3.4°C)	-4.5°F (-2.5°C)	3rd Coolest	Coolest since: 1978	1978
Dec 1978–May 1979 6-Month	33.6°F (0.9°C)	38.1°F (3.4°C)	-4.5°F (-2.5°C)	125th Warmest	Warmest since: 1977	2012
Nov 1978–May 1979 7-Month	34.8°F (1.6°C)	38.3°F (3.5°C)	-3.5°F (-1.9°C)	4th Coolest	Coolest since: 1978	1904
	34.8°F (1.6°C)	38.3°F (3.5°C)	-3.5°F (-1.9°C)	124th Warmest	Warmest since: 1977	2012
	Ties: 1920, 2014
Oct 1978–May 1979 8-Month	36.9°F (2.7°C)	40.2°F (4.6°C)	-3.3°F (-1.9°C)	4th Coolest	Coolest since: 1978	1904
	36.9°F (2.7°C)	40.2°F (4.6°C)	-3.3°F (-1.9°C)	124th Warmest	Warmest since: 1977	2012
	Ties: 1899, 1918
Sep 1978–May 1979 9-Month	40.6°F (4.8°C)	43.0°F (6.1°C)	-2.4°F (-1.3°C)	7th Coolest	Coolest since: 1978	1904
Sep 1978–May 1979 9-Month	40.6°F (4.8°C)	43.0°F (6.1°C)	-2.4°F (-1.3°C)	121st Warmest	Warmest since: 1977	2012
Aug 1978–May 1979 10-Month	43.7°F (6.5°C)	45.9°F (7.7°C)	-2.2°F (-1.2°C)	8th Coolest	Coolest since: 1978	1904
Aug 1978–May 1979 10-Month	43.7°F (6.5°C)	45.9°F (7.7°C)	-2.2°F (-1.2°C)	120th Warmest	Warmest since: 1977	2012
Jul 1978–May 1979 11-Month	46.4°F (8.0°C)	48.5°F (9.2°C)	-2.1°F (-1.2°C)	8th Coolest	Coolest since: 1978	1904
	46.4°F (8.0°C)	48.5°F (9.2°C)	-2.1°F (-1.2°C)	120th Warmest	Warmest since: 1977	2012
	Ties: 1977
Jun 1978–May 1979 12-Month	48.5°F (9.2°C)	50.3°F (10.2°C)	-1.8°F (-1.0°C)	8th Coolest	Coolest since: 1978	1904
	48.5°F (9.2°C)	50.3°F (10.2°C)	-1.8°F (-1.0°C)	120th Warmest	Warmest since: 1977	2012
	Ties: 1899, 1951, 1977
Dec 1977–May 1979 18-Month	43.2°F (6.2°C)	46.2°F (7.9°C)	-3.0°F (-1.7°C)	2nd Coolest	Coolest since: 1905	1905
Dec 1977–May 1979 18-Month	43.2°F (6.2°C)	46.2°F (7.9°C)	-3.0°F (-1.7°C)	125th Warmest	Warmest since: 1978	2017
Jun 1977–May 1979 24-Month	48.0°F (8.9°C)	50.3°F (10.2°C)	-2.3°F (-1.3°C)	3rd Coolest	Coolest since: 1978	1905
	48.0°F (8.9°C)	50.3°F (10.2°C)	-2.3°F (-1.3°C)	124th Warmest	Warmest since: 1977	2017
	Ties: 1904
Jun 1976–May 1979 36-Month	48.1°F (8.9°C)	50.3°F (10.2°C)	-2.2°F (-1.3°C)	3rd Coolest	Coolest since: 1906	1905, 1906
Jun 1976–May 1979 36-Month	48.1°F (8.9°C)	50.3°F (10.2°C)	-2.2°F (-1.3°C)	123rd Warmest	Warmest since: 1978	2018
Jun 1975–May 1979 48-Month	49.0°F (9.4°C)	50.2°F (10.1°C)	-1.2°F (-0.7°C)	7th Coolest	Coolest since: 1919	1905
	49.0°F (9.4°C)	50.2°F (10.1°C)	-1.2°F (-0.7°C)	118th Warmest	Warmest since: 1978	2019
	Ties: 1919
Jun 1974–May 1979 60-Month	49.2°F (9.6°C)	50.3°F (10.2°C)	-1.1°F (-0.6°C)	9th Coolest	Coolest since: 1920	1905, 1906, 1908
	49.2°F (9.6°C)	50.3°F (10.2°C)	-1.1°F (-0.6°C)	115th Warmest	Warmest since: 1978	2020
	Ties: 1980

Citing This Page

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