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, May 1985

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 1985 1-Month	64.6°F (18.1°C)	62.3°F (16.8°C)	2.3°F (1.3°C)	94th Coolest	Coolest since: 1984	1924
May 1985 1-Month	64.6°F (18.1°C)	62.3°F (16.8°C)	2.3°F (1.3°C)	35th Warmest	Warmest since: 1982	2018
Apr–May 1985 2-Month	60.7°F (15.9°C)	56.8°F (13.8°C)	3.9°F (2.1°C)	119th Coolest	Coolest since: 1984	1907
	60.7°F (15.9°C)	56.8°F (13.8°C)	3.9°F (2.1°C)	10th Warmest	Warmest since: 1977	1896
	Ties: 1934
Mar–May 1985 3-Month	55.1°F (12.8°C)	50.9°F (10.5°C)	4.2°F (2.3°C)	123rd Coolest	Coolest since: 1984	1960
Mar–May 1985 3-Month	55.1°F (12.8°C)	50.9°F (10.5°C)	4.2°F (2.3°C)	6th Warmest	Warmest since: 1977	2012
Feb–May 1985 4-Month	47.2°F (8.4°C)	45.2°F (7.3°C)	2.0°F (1.1°C)	106th Coolest	Coolest since: 1984	1978
	47.2°F (8.4°C)	45.2°F (7.3°C)	2.0°F (1.1°C)	23rd Warmest	Warmest since: 1977	2012
	Ties: 1922, 1955, 1974
Jan–May 1985 5-Month	41.0°F (5.0°C)	40.9°F (4.9°C)	0.1°F (0.1°C)	66th Coolest	Coolest since: 1984	1978
Jan–May 1985 5-Month	41.0°F (5.0°C)	40.9°F (4.9°C)	0.1°F (0.1°C)	63rd Warmest	Warmest since: 1983	2012
Dec 1984–May 1985 6-Month	39.8°F (4.3°C)	38.8°F (3.8°C)	1.0°F (0.5°C)	88th Coolest	Coolest since: 1984	1978
	39.8°F (4.3°C)	38.8°F (3.8°C)	1.0°F (0.5°C)	40th Warmest	Warmest since: 1983	2012
	Ties: 1990
Nov 1984–May 1985 7-Month	40.0°F (4.4°C)	39.0°F (3.9°C)	1.0°F (0.5°C)	87th Coolest	Coolest since: 1984	1978
	40.0°F (4.4°C)	39.0°F (3.9°C)	1.0°F (0.5°C)	41st Warmest	Warmest since: 1983	2012
	Ties: 1974
Oct 1984–May 1985 8-Month	42.1°F (5.6°C)	41.0°F (5.0°C)	1.1°F (0.6°C)	93rd Coolest	Coolest since: 1984	1978
	42.1°F (5.6°C)	41.0°F (5.0°C)	1.1°F (0.6°C)	35th Warmest	Warmest since: 1983	2012
	Ties: 1925, 1931
Sep 1984–May 1985 9-Month	44.5°F (6.9°C)	43.8°F (6.6°C)	0.7°F (0.3°C)	85th Coolest	Coolest since: 1984	1978
	44.5°F (6.9°C)	43.8°F (6.6°C)	0.7°F (0.3°C)	43rd Warmest	Warmest since: 1983	2012
	Ties: 1948, 2018
Aug 1984–May 1985 10-Month	47.5°F (8.6°C)	46.7°F (8.2°C)	0.8°F (0.4°C)	88th Coolest	Coolest since: 1984	1978
Aug 1984–May 1985 10-Month	47.5°F (8.6°C)	46.7°F (8.2°C)	0.8°F (0.4°C)	40th Warmest	Warmest since: 1981	2012
Jul 1984–May 1985 11-Month	49.9°F (9.9°C)	49.4°F (9.7°C)	0.5°F (0.2°C)	85th Coolest	Coolest since: 1984	1904
	49.9°F (9.9°C)	49.4°F (9.7°C)	0.5°F (0.2°C)	43rd Warmest	Warmest since: 1983	2012
	Ties: 1915, 1928, 1988, 1989
Jun 1984–May 1985 12-Month	51.9°F (11.1°C)	51.3°F (10.7°C)	0.6°F (0.4°C)	85th Coolest	Coolest since: 1984	1904
	51.9°F (11.1°C)	51.3°F (10.7°C)	0.6°F (0.4°C)	43rd Warmest	Warmest since: 1981	2012
	Ties: 1898, 1949, 1989
Dec 1983–May 1985 18-Month	46.5°F (8.1°C)	47.1°F (8.4°C)	-0.6°F (-0.3°C)	33rd Coolest	Coolest since: 1983	1979
	46.5°F (8.1°C)	47.1°F (8.4°C)	-0.6°F (-0.3°C)	94th Warmest	Warmest since: 1984	2017
	Ties: 1924, 1930, 1966, 1969, 1982
Jun 1983–May 1985 24-Month	51.5°F (10.8°C)	51.3°F (10.7°C)	0.2°F (0.1°C)	78th Coolest	Coolest since: 1984	1905
	51.5°F (10.8°C)	51.3°F (10.7°C)	0.2°F (0.1°C)	49th Warmest	Warmest since: 1981	2017
	Ties: 1901, 1946, 1974
Jun 1982–May 1985 36-Month	51.4°F (10.8°C)	51.2°F (10.7°C)	0.2°F (0.1°C)	71st Coolest	Coolest since: 1984	1979
	51.4°F (10.8°C)	51.2°F (10.7°C)	0.2°F (0.1°C)	55th Warmest	Warmest since: 1976	2018
	Ties: 1938, 1946, 1948, 1958, 1966
Jun 1981–May 1985 48-Month	51.0°F (10.6°C)	51.2°F (10.7°C)	-0.2°F (-0.1°C)	39th Coolest	Coolest since: 1983	1980
	51.0°F (10.6°C)	51.2°F (10.7°C)	-0.2°F (-0.1°C)	86th Warmest	Warmest since: 1984	1935
	Ties: 1964, 1965, 1983, 1995
Jun 1980–May 1985 60-Month	51.3°F (10.7°C)	51.2°F (10.7°C)	0.1°F (0.0°C)	58th Coolest	Coolest since: 1984	1906, 1907, 1979
	51.3°F (10.7°C)	51.2°F (10.7°C)	0.1°F (0.0°C)	66th Warmest	Warmest since: 1976	1935
	Ties: 1917, 1926, 1994

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on January 30, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings