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 1977

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 1977 1-Month	69.2°F (20.7°C)	61.0°F (16.1°C)	8.2°F (4.6°C)	127th Coolest	Coolest since: 1976	1907
May 1977 1-Month	69.2°F (20.7°C)	61.0°F (16.1°C)	8.2°F (4.6°C)	2nd Warmest	Warmest to Date	2018
Apr–May 1977 2-Month	62.8°F (17.1°C)	55.5°F (13.1°C)	7.3°F (4.0°C)	128th Coolest	Coolest since: 1976	1907
Apr–May 1977 2-Month	62.8°F (17.1°C)	55.5°F (13.1°C)	7.3°F (4.0°C)	1st Warmest	Warmest to Date	1977
Mar–May 1977 3-Month	56.5°F (13.6°C)	49.7°F (9.8°C)	6.8°F (3.8°C)	127th Coolest	Coolest since: 1976	1960
Mar–May 1977 3-Month	56.5°F (13.6°C)	49.7°F (9.8°C)	6.8°F (3.8°C)	2nd Warmest	Warmest to Date	2012
Feb–May 1977 4-Month	49.0°F (9.4°C)	44.1°F (6.7°C)	4.9°F (2.7°C)	123rd Coolest	Coolest since: 1976	1978
	49.0°F (9.4°C)	44.1°F (6.7°C)	4.9°F (2.7°C)	6th Warmest	Warmest since: 1921	2012
	Ties: 1987
Jan–May 1977 5-Month	40.9°F (4.9°C)	40.1°F (4.5°C)	0.8°F (0.4°C)	82nd Coolest	Coolest since: 1975	1978
	40.9°F (4.9°C)	40.1°F (4.5°C)	0.8°F (0.4°C)	47th Warmest	Warmest since: 1976	2012
	Ties: 1941, 1983
Dec 1976–May 1977 6-Month	37.6°F (3.1°C)	38.1°F (3.4°C)	-0.5°F (-0.3°C)	44th Coolest	Coolest since: 1971	1978
Dec 1976–May 1977 6-Month	37.6°F (3.1°C)	38.1°F (3.4°C)	-0.5°F (-0.3°C)	84th Warmest	Warmest since: 1976	2012
Nov 1976–May 1977 7-Month	36.9°F (2.7°C)	38.3°F (3.5°C)	-1.4°F (-0.8°C)	23rd Coolest	Coolest since: 1970	1904
	36.9°F (2.7°C)	38.3°F (3.5°C)	-1.4°F (-0.8°C)	105th Warmest	Warmest since: 1976	2012
	Ties: 1997
Oct 1976–May 1977 8-Month	38.2°F (3.4°C)	40.2°F (4.6°C)	-2.0°F (-1.2°C)	15th Coolest	Coolest since: 1960	1904
	38.2°F (3.4°C)	40.2°F (4.6°C)	-2.0°F (-1.2°C)	113th Warmest	Warmest since: 1976	2012
	Ties: 1917, 1960
Sep 1976–May 1977 9-Month	40.9°F (4.9°C)	42.9°F (6.1°C)	-2.0°F (-1.2°C)	11th Coolest	Coolest since: 1936	1904
	40.9°F (4.9°C)	42.9°F (6.1°C)	-2.0°F (-1.2°C)	117th Warmest	Warmest since: 1976	2012
	Ties: 1905, 1982
Aug 1976–May 1977 10-Month	43.8°F (6.6°C)	45.9°F (7.7°C)	-2.1°F (-1.1°C)	9th Coolest	Coolest since: 1936	1904
	43.8°F (6.6°C)	45.9°F (7.7°C)	-2.1°F (-1.1°C)	119th Warmest	Warmest since: 1976	2012
	Ties: 1902, 1982, 2014
Jul 1976–May 1977 11-Month	46.4°F (8.0°C)	48.4°F (9.1°C)	-2.0°F (-1.1°C)	8th Coolest	Coolest since: 1918	1904
	46.4°F (8.0°C)	48.4°F (9.1°C)	-2.0°F (-1.1°C)	120th Warmest	Warmest since: 1976	2012
	Ties: 1979
Jun 1976–May 1977 12-Month	48.5°F (9.2°C)	50.3°F (10.2°C)	-1.8°F (-1.0°C)	8th Coolest	Coolest since: 1951	1904
	48.5°F (9.2°C)	50.3°F (10.2°C)	-1.8°F (-1.0°C)	120th Warmest	Warmest since: 1976	2012
	Ties: 1899, 1951, 1979
Dec 1975–May 1977 18-Month	45.8°F (7.7°C)	46.2°F (7.9°C)	-0.4°F (-0.2°C)	46th Coolest	Coolest since: 1971	1905
	45.8°F (7.7°C)	46.2°F (7.9°C)	-0.4°F (-0.2°C)	81st Warmest	Warmest since: 1976	2017
	Ties: 1907, 1966, 1969
Jun 1975–May 1977 24-Month	50.1°F (10.1°C)	50.3°F (10.2°C)	-0.2°F (-0.1°C)	56th Coolest	Coolest since: 1971	1905
Jun 1975–May 1977 24-Month	50.1°F (10.1°C)	50.3°F (10.2°C)	-0.2°F (-0.1°C)	71st Warmest	Warmest since: 1976	2017
Jun 1974–May 1977 36-Month	50.0°F (10.0°C)	50.3°F (10.2°C)	-0.3°F (-0.2°C)	46th Coolest	Coolest since: 1971	1905, 1906
	50.0°F (10.0°C)	50.3°F (10.2°C)	-0.3°F (-0.2°C)	80th Warmest	Warmest since: 1976	2018
	Ties: 1967
Jun 1973–May 1977 48-Month	50.5°F (10.3°C)	50.3°F (10.2°C)	0.2°F (0.1°C)	60th Coolest	Coolest since: 1973	1905
	50.5°F (10.3°C)	50.3°F (10.2°C)	0.2°F (0.1°C)	65th Warmest	Warmest since: 1976	2019
	Ties: 1938, 1947, 1948
Jun 1972–May 1977 60-Month	50.4°F (10.2°C)	50.3°F (10.2°C)	0.1°F (0.0°C)	54th Coolest	Coolest since: 1973	1905, 1906, 1908
	50.4°F (10.2°C)	50.3°F (10.2°C)	0.1°F (0.0°C)	70th Warmest	Warmest since: 1976	2020
	Ties: 1922, 1940, 1951, 1985

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