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 1930

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
December 1930 1-Month	29.4°F (-1.4°C)	28.3°F (-2.1°C)	1.1°F (0.7°C)	67th Coolest	Coolest since: 1929	1983
	29.4°F (-1.4°C)	28.3°F (-2.1°C)	1.1°F (0.7°C)	62nd Warmest	Warmest since: 1928	2015
	Ties: 1900, 1905
Nov–Dec 1930 2-Month	35.6°F (2.0°C)	34.3°F (1.3°C)	1.3°F (0.7°C)	82nd Coolest	Coolest since: 1929	2000
	35.6°F (2.0°C)	34.3°F (1.3°C)	1.3°F (0.7°C)	47th Warmest	Warmest since: 1928	1931
	Ties: 1902, 1915, 1964
Oct–Dec 1930 3-Month	41.2°F (5.1°C)	41.0°F (5.0°C)	0.2°F (0.1°C)	67th Coolest	Coolest since: 1929	1976
	41.2°F (5.1°C)	41.0°F (5.0°C)	0.2°F (0.1°C)	62nd Warmest	Warmest since: 1928	1931
	Ties: 1962
Sep–Dec 1930 4-Month	48.3°F (9.1°C)	47.3°F (8.5°C)	1.0°F (0.6°C)	82nd Coolest	Coolest since: 1929	1976
	48.3°F (9.1°C)	47.3°F (8.5°C)	1.0°F (0.6°C)	47th Warmest	Warmest since: 1927	1931
	Ties: 1979, 2020
Aug–Dec 1930 5-Month	53.8°F (12.1°C)	52.5°F (11.4°C)	1.3°F (0.7°C)	99th Coolest	Coolest since: 1929	1976
	53.8°F (12.1°C)	52.5°F (11.4°C)	1.3°F (0.7°C)	30th Warmest	Warmest since: 1922	1931
	Ties: 1921, 1933, 1940, 1948
Jul–Dec 1930 6-Month	58.1°F (14.5°C)	56.5°F (13.6°C)	1.6°F (0.9°C)	111th Coolest	Coolest since: 1929	1976
	58.1°F (14.5°C)	56.5°F (13.6°C)	1.6°F (0.9°C)	18th Warmest	Warmest since: 1921	1931
	Ties: 1921, 2007
Jun–Dec 1930 7-Month	59.9°F (15.5°C)	58.6°F (14.8°C)	1.3°F (0.7°C)	101st Coolest	Coolest since: 1929	1976
	59.9°F (15.5°C)	58.6°F (14.8°C)	1.3°F (0.7°C)	28th Warmest	Warmest since: 1922	1931
	Ties: 1940, 1994
May–Dec 1930 8-Month	60.4°F (15.8°C)	59.1°F (15.1°C)	1.3°F (0.7°C)	101st Coolest	Coolest since: 1929	1917
	60.4°F (15.8°C)	59.1°F (15.1°C)	1.3°F (0.7°C)	28th Warmest	Warmest since: 1922	1931
	Ties: 1914, 1954, 1965, 1971, 2005
Apr–Dec 1930 9-Month	59.8°F (15.4°C)	58.2°F (14.6°C)	1.6°F (0.8°C)	111th Coolest	Coolest since: 1929	1917
	59.8°F (15.4°C)	58.2°F (14.6°C)	1.6°F (0.8°C)	18th Warmest	Warmest since: 1921	1931
	Ties: 1933, 1953, 2005, 2007
Mar–Dec 1930 10-Month	57.7°F (14.3°C)	56.3°F (13.5°C)	1.4°F (0.8°C)	105th Coolest	Coolest since: 1929	1917
	57.7°F (14.3°C)	56.3°F (13.5°C)	1.4°F (0.8°C)	24th Warmest	Warmest since: 1922	2012
	Ties: 2005, 2006
Feb–Dec 1930 11-Month	55.9°F (13.3°C)	53.7°F (12.1°C)	2.2°F (1.2°C)	121st Coolest	Coolest since: 1929	1917
	55.9°F (13.3°C)	53.7°F (12.1°C)	2.2°F (1.2°C)	8th Warmest	Warmest since: 1921	2012
	Ties: 2017
Jan–Dec 1930 12-Month	52.6°F (11.4°C)	51.2°F (10.7°C)	1.4°F (0.7°C)	104th Coolest	Coolest since: 1929	1917
	52.6°F (11.4°C)	51.2°F (10.7°C)	1.4°F (0.7°C)	25th Warmest	Warmest since: 1922	2012
	Ties: 1922
Jul 1929–Dec 1930 18-Month	53.4°F (11.9°C)	53.0°F (11.7°C)	0.4°F (0.2°C)	82nd Coolest	Coolest since: 1929	1904
	53.4°F (11.9°C)	53.0°F (11.7°C)	0.4°F (0.2°C)	46th Warmest	Warmest since: 1923	2012
	Ties: 1911, 1937, 1990
Jan 1929–Dec 1930 24-Month	51.0°F (10.6°C)	51.2°F (10.7°C)	-0.2°F (-0.1°C)	54th Coolest	Coolest since: 1929	1979
	51.0°F (10.6°C)	51.2°F (10.7°C)	-0.2°F (-0.1°C)	74th Warmest	Warmest since: 1928	2017
	Ties: 1937, 1973, 1986
Jan 1928–Dec 1930 36-Month	51.2°F (10.7°C)	51.2°F (10.7°C)	0.0°F (0.0°C)	59th Coolest	Coolest since: 1929	1905
	51.2°F (10.7°C)	51.2°F (10.7°C)	0.0°F (0.0°C)	68th Warmest	Warmest since: 1923	2017
	Ties: 1911, 1920, 1944, 1958, 1964, 1966, 1973, 2009, 2014
Jan 1927–Dec 1930 48-Month	51.3°F (10.7°C)	51.2°F (10.7°C)	0.1°F (0.0°C)	65th Coolest	Coolest since: 1929	1905
	51.3°F (10.7°C)	51.2°F (10.7°C)	0.1°F (0.0°C)	61st Warmest	Warmest since: 1924	1934
	Ties: 1913, 1986, 2016
Jan 1926–Dec 1930 60-Month	51.0°F (10.6°C)	51.2°F (10.7°C)	-0.2°F (-0.1°C)	43rd Coolest	Coolest since: 1929	1905
	51.0°F (10.6°C)	51.2°F (10.7°C)	-0.2°F (-0.1°C)	82nd Warmest	Warmest since: 1925	1934
	Ties: 1912, 1960, 1966, 1986

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