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, April 1966

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
April 1966 1-Month	48.5°F (9.2°C)	51.3°F (10.7°C)	-2.8°F (-1.5°C)	21st Coolest	Coolest since: 1961	2018
	48.5°F (9.2°C)	51.3°F (10.7°C)	-2.8°F (-1.5°C)	108th Warmest	Warmest since: 1965	2010
	Ties: 1979
Mar–Apr 1966 2-Month	45.2°F (7.3°C)	45.2°F (7.3°C)	0.0°F (0.0°C)	64th Coolest	Coolest since: 1965	1960
	45.2°F (7.3°C)	45.2°F (7.3°C)	0.0°F (0.0°C)	65th Warmest	Warmest since: 1963	2012
	Ties: 1959
Feb–Apr 1966 3-Month	39.6°F (4.2°C)	39.5°F (4.2°C)	0.1°F (0.0°C)	67th Coolest	Coolest since: 1965	1899
Feb–Apr 1966 3-Month	39.6°F (4.2°C)	39.5°F (4.2°C)	0.1°F (0.0°C)	62nd Warmest	Warmest since: 1963	2012
Jan–Apr 1966 4-Month	34.5°F (1.4°C)	35.6°F (2.0°C)	-1.1°F (-0.6°C)	46th Coolest	Coolest since: 1965	1912
	34.5°F (1.4°C)	35.6°F (2.0°C)	-1.1°F (-0.6°C)	83rd Warmest	Warmest since: 1964	2012
	Ties: 1926, 2008
Dec 1965–Apr 1966 5-Month	35.0°F (1.7°C)	34.2°F (1.2°C)	0.8°F (0.5°C)	82nd Coolest	Coolest since: 1965	1978
	35.0°F (1.7°C)	34.2°F (1.2°C)	0.8°F (0.5°C)	46th Warmest	Warmest since: 1957	2012
	Ties: 1907, 1952, 1957, 2021
Nov 1965–Apr 1966 6-Month	36.4°F (2.4°C)	35.2°F (1.8°C)	1.2°F (0.6°C)	90th Coolest	Coolest since: 1965	1904, 1912, 1978
	36.4°F (2.4°C)	35.2°F (1.8°C)	1.2°F (0.6°C)	38th Warmest	Warmest since: 1955	2012
	Ties: 1910, 1925
Oct 1965–Apr 1966 7-Month	38.9°F (3.8°C)	37.9°F (3.3°C)	1.0°F (0.5°C)	89th Coolest	Coolest since: 1965	1912
	38.9°F (3.8°C)	37.9°F (3.3°C)	1.0°F (0.5°C)	39th Warmest	Warmest since: 1964	2012
	Ties: 1928, 1985, 2021
Sep 1965–Apr 1966 8-Month	42.2°F (5.7°C)	41.5°F (5.3°C)	0.7°F (0.4°C)	82nd Coolest	Coolest since: 1965	1904, 1978
	42.2°F (5.7°C)	41.5°F (5.3°C)	0.7°F (0.4°C)	46th Warmest	Warmest since: 1964	2017
	Ties: 2007
Aug 1965–Apr 1966 9-Month	45.5°F (7.5°C)	45.0°F (7.2°C)	0.5°F (0.3°C)	73rd Coolest	Coolest since: 1965	1978
	45.5°F (7.5°C)	45.0°F (7.2°C)	0.5°F (0.3°C)	55th Warmest	Warmest since: 1964	2017
	Ties: 1896, 1910, 1937, 1953, 2021
Jul 1965–Apr 1966 10-Month	48.3°F (9.1°C)	48.1°F (8.9°C)	0.2°F (0.2°C)	60th Coolest	Coolest since: 1965	1904
	48.3°F (9.1°C)	48.1°F (8.9°C)	0.2°F (0.2°C)	68th Warmest	Warmest since: 1964	2012
	Ties: 1896, 1910, 1925, 1927, 1950, 1956, 1967
Jun 1965–Apr 1966 11-Month	50.4°F (10.2°C)	50.3°F (10.2°C)	0.1°F (0.0°C)	66th Coolest	Coolest since: 1965	1904
	50.4°F (10.2°C)	50.3°F (10.2°C)	0.1°F (0.0°C)	62nd Warmest	Warmest since: 1964	2017
	Ties: 1910, 1984
May 1965–Apr 1966 12-Month	51.8°F (11.0°C)	51.3°F (10.7°C)	0.5°F (0.3°C)	78th Coolest	Coolest since: 1965	1918
	51.8°F (11.0°C)	51.3°F (10.7°C)	0.5°F (0.3°C)	50th Warmest	Warmest since: 1964	2017
	Ties: 1898, 1901
Nov 1964–Apr 1966 18-Month	45.8°F (7.7°C)	45.9°F (7.7°C)	-0.1°F (0.0°C)	53rd Coolest	Coolest since: 1965	1979
	45.8°F (7.7°C)	45.9°F (7.7°C)	-0.1°F (0.0°C)	74th Warmest	Warmest since: 1964	2017
	Ties: 1911, 1924, 1964, 1973
May 1964–Apr 1966 24-Month	51.3°F (10.7°C)	51.2°F (10.7°C)	0.1°F (0.0°C)	56th Coolest	Coolest since: 1963	1905
	51.3°F (10.7°C)	51.2°F (10.7°C)	0.1°F (0.0°C)	71st Warmest	Warmest since: 1965	2017
	Ties: 1948, 1953, 1972, 1973, 1985, 1993
May 1963–Apr 1966 36-Month	51.5°F (10.8°C)	51.2°F (10.7°C)	0.3°F (0.1°C)	73rd Coolest	Coolest since: 1965	1979
	51.5°F (10.8°C)	51.2°F (10.7°C)	0.3°F (0.1°C)	53rd Warmest	Warmest since: 1958	2018
	Ties: 1898, 1947, 1958, 1985
May 1962–Apr 1966 48-Month	51.4°F (10.8°C)	51.2°F (10.7°C)	0.2°F (0.1°C)	71st Coolest	Coolest since: 1965	1980
	51.4°F (10.8°C)	51.2°F (10.7°C)	0.2°F (0.1°C)	54th Warmest	Warmest since: 1958	1935
	Ties: 1917, 1954, 1967, 1974, 1999, 2015
May 1961–Apr 1966 60-Month	51.0°F (10.6°C)	51.2°F (10.7°C)	-0.2°F (-0.1°C)	38th Coolest	Coolest since: 1965	1906, 1979
	51.0°F (10.6°C)	51.2°F (10.7°C)	-0.2°F (-0.1°C)	86th Warmest	Warmest since: 1961	1935
	Ties: 1921, 1927, 1951, 1952, 1953, 1960, 1961, 1968, 1977

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2023, retrieved on March 29, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings