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, December 1984

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
December 1984 1-Month	33.8°F (1.0°C)	28.3°F (-2.1°C)	5.5°F (3.1°C)	109th Coolest	Coolest since: 1983	1983
	33.8°F (1.0°C)	28.3°F (-2.1°C)	5.5°F (3.1°C)	20th Warmest	Warmest since: 1982	2015
	Ties: 1896, 1946
Nov–Dec 1984 2-Month	37.4°F (3.0°C)	34.3°F (1.3°C)	3.1°F (1.7°C)	104th Coolest	Coolest since: 1983	2000
	37.4°F (3.0°C)	34.3°F (1.3°C)	3.1°F (1.7°C)	25th Warmest	Warmest since: 1982	1931
	Ties: 2004
Oct–Dec 1984 3-Month	43.8°F (6.6°C)	41.0°F (5.0°C)	2.8°F (1.6°C)	106th Coolest	Coolest since: 1983	1976
Oct–Dec 1984 3-Month	43.8°F (6.6°C)	41.0°F (5.0°C)	2.8°F (1.6°C)	23rd Warmest	Warmest since: 1982	1931
Sep–Dec 1984 4-Month	48.8°F (9.3°C)	47.3°F (8.5°C)	1.5°F (0.8°C)	99th Coolest	Coolest since: 1983	1976
	48.8°F (9.3°C)	47.3°F (8.5°C)	1.5°F (0.8°C)	30th Warmest	Warmest since: 1982	1931
	Ties: 1908, 1912, 1921, 1927, 2017
Aug–Dec 1984 5-Month	54.0°F (12.2°C)	52.5°F (11.4°C)	1.5°F (0.8°C)	104th Coolest	Coolest since: 1983	1976
Aug–Dec 1984 5-Month	54.0°F (12.2°C)	52.5°F (11.4°C)	1.5°F (0.8°C)	25th Warmest	Warmest since: 1971	1931
Jul–Dec 1984 6-Month	57.3°F (14.1°C)	56.5°F (13.6°C)	0.8°F (0.5°C)	86th Coolest	Coolest since: 1983	1976
	57.3°F (14.1°C)	56.5°F (13.6°C)	0.8°F (0.5°C)	43rd Warmest	Warmest since: 1980	1931
	Ties: 1912, 1916
Jun–Dec 1984 7-Month	59.7°F (15.4°C)	58.6°F (14.8°C)	1.1°F (0.6°C)	94th Coolest	Coolest since: 1983	1976
	59.7°F (15.4°C)	58.6°F (14.8°C)	1.1°F (0.6°C)	35th Warmest	Warmest since: 1971	1931
	Ties: 1918, 1923, 2010
May–Dec 1984 8-Month	59.6°F (15.3°C)	59.1°F (15.1°C)	0.5°F (0.2°C)	80th Coolest	Coolest since: 1983	1917
	59.6°F (15.3°C)	59.1°F (15.1°C)	0.5°F (0.2°C)	49th Warmest	Warmest since: 1982	1931
	Ties: 1948, 1962, 1982, 2019, 2020, 2022
Apr–Dec 1984 9-Month	58.5°F (14.7°C)	58.2°F (14.6°C)	0.3°F (0.1°C)	68th Coolest	Coolest since: 1983	1917
	58.5°F (14.7°C)	58.2°F (14.6°C)	0.3°F (0.1°C)	61st Warmest	Warmest since: 1980	1931
	Ties: 1906, 1957, 2002
Mar–Dec 1984 10-Month	55.8°F (13.2°C)	56.3°F (13.5°C)	-0.5°F (-0.3°C)	40th Coolest	Coolest since: 1978	1917
	55.8°F (13.2°C)	56.3°F (13.5°C)	-0.5°F (-0.3°C)	89th Warmest	Warmest since: 1983	2012
	Ties: 1912
Feb–Dec 1984 11-Month	54.0°F (12.2°C)	53.7°F (12.1°C)	0.3°F (0.1°C)	74th Coolest	Coolest since: 1983	1917
	54.0°F (12.2°C)	53.7°F (12.1°C)	0.3°F (0.1°C)	55th Warmest	Warmest since: 1977	2012
	Ties: 2000
Jan–Dec 1984 12-Month	51.4°F (10.8°C)	51.2°F (10.7°C)	0.2°F (0.1°C)	68th Coolest	Coolest since: 1982	1917
	51.4°F (10.8°C)	51.2°F (10.7°C)	0.2°F (0.1°C)	61st Warmest	Warmest since: 1983	2012
	Ties: 1942, 1975
Jul 1983–Dec 1984 18-Month	53.2°F (11.8°C)	53.0°F (11.7°C)	0.2°F (0.1°C)	74th Coolest	Coolest since: 1982	1904
	53.2°F (11.8°C)	53.0°F (11.7°C)	0.2°F (0.1°C)	54th Warmest	Warmest since: 1983	2012
	Ties: 1896, 1936, 1947, 2001
Jan 1983–Dec 1984 24-Month	51.5°F (10.8°C)	51.2°F (10.7°C)	0.3°F (0.1°C)	79th Coolest	Coolest since: 1983	1979
	51.5°F (10.8°C)	51.2°F (10.7°C)	0.3°F (0.1°C)	49th Warmest	Warmest since: 1974	2017
	Ties: 1928, 1964, 1990, 2019
Jan 1982–Dec 1984 36-Month	51.0°F (10.6°C)	51.2°F (10.7°C)	-0.2°F (-0.1°C)	47th Coolest	Coolest since: 1982	1905
	51.0°F (10.6°C)	51.2°F (10.7°C)	-0.2°F (-0.1°C)	80th Warmest	Warmest since: 1983	2017
	Ties: 1897, 1909, 1924, 1928, 1950, 1974
Jan 1981–Dec 1984 48-Month	51.1°F (10.6°C)	51.2°F (10.7°C)	-0.1°F (-0.1°C)	48th Coolest	Coolest since: 1983	1905
	51.1°F (10.6°C)	51.2°F (10.7°C)	-0.1°F (-0.1°C)	78th Warmest	Warmest since: 1983	1934
	Ties: 1899, 1915, 1928, 1966, 1973, 1975, 1983
Jan 1980–Dec 1984 60-Month	51.1°F (10.6°C)	51.2°F (10.7°C)	-0.1°F (-0.1°C)	48th Coolest	Coolest since: 1983	1905
	51.1°F (10.6°C)	51.2°F (10.7°C)	-0.1°F (-0.1°C)	77th Warmest	Warmest since: 1977	1934
	Ties: 1913, 1916, 1965, 1974

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2023, retrieved on March 26, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings