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 1951

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
April 1951 1-Month	47.9°F (8.8°C)	51.3°F (10.7°C)	-3.4°F (-1.9°C)	16th Coolest	Coolest since: 1950	2018
April 1951 1-Month	47.9°F (8.8°C)	51.3°F (10.7°C)	-3.4°F (-1.9°C)	113th Warmest	Warmest since: 1949	2010
Mar–Apr 1951 2-Month	40.8°F (4.9°C)	45.2°F (7.3°C)	-4.4°F (-2.4°C)	6th Coolest	Coolest since: 1950	1960
	40.8°F (4.9°C)	45.2°F (7.3°C)	-4.4°F (-2.4°C)	123rd Warmest	Warmest since: 1949	2012
	Ties: 1996
Feb–Apr 1951 3-Month	36.7°F (2.6°C)	39.5°F (4.2°C)	-2.8°F (-1.6°C)	24th Coolest	Coolest since: 1950	1899
	36.7°F (2.6°C)	39.5°F (4.2°C)	-2.8°F (-1.6°C)	105th Warmest	Warmest since: 1949	2012
	Ties: 1989, 2013
Jan–Apr 1951 4-Month	33.8°F (1.0°C)	35.6°F (2.0°C)	-1.8°F (-1.0°C)	31st Coolest	Coolest since: 1947	1912
	33.8°F (1.0°C)	35.6°F (2.0°C)	-1.8°F (-1.0°C)	98th Warmest	Warmest since: 1950	2012
	Ties: 2022
Dec 1950–Apr 1951 5-Month	31.2°F (-0.4°C)	34.2°F (1.2°C)	-3.0°F (-1.6°C)	13th Coolest	Coolest since: 1936	1978
	31.2°F (-0.4°C)	34.2°F (1.2°C)	-3.0°F (-1.6°C)	115th Warmest	Warmest since: 1950	2012
	Ties: 1962
Nov 1950–Apr 1951 6-Month	31.7°F (-0.2°C)	35.2°F (1.8°C)	-3.5°F (-2.0°C)	8th Coolest	Coolest since: 1936	1904, 1912, 1978
Nov 1950–Apr 1951 6-Month	31.7°F (-0.2°C)	35.2°F (1.8°C)	-3.5°F (-2.0°C)	120th Warmest	Warmest since: 1950	2012
Oct 1950–Apr 1951 7-Month	35.8°F (2.1°C)	37.9°F (3.3°C)	-2.1°F (-1.2°C)	16th Coolest	Coolest since: 1936	1912
	35.8°F (2.1°C)	37.9°F (3.3°C)	-2.1°F (-1.2°C)	112th Warmest	Warmest since: 1950	2012
	Ties: 1905, 1996
Sep 1950–Apr 1951 8-Month	39.4°F (4.1°C)	41.5°F (5.3°C)	-2.1°F (-1.2°C)	13th Coolest	Coolest since: 1936	1904, 1978
	39.4°F (4.1°C)	41.5°F (5.3°C)	-2.1°F (-1.2°C)	115th Warmest	Warmest since: 1950	2017
	Ties: 1902, 1970
Aug 1950–Apr 1951 9-Month	42.7°F (5.9°C)	45.0°F (7.2°C)	-2.3°F (-1.3°C)	11th Coolest	Coolest since: 1936	1978
Aug 1950–Apr 1951 9-Month	42.7°F (5.9°C)	45.0°F (7.2°C)	-2.3°F (-1.3°C)	117th Warmest	Warmest since: 1950	2017
Jul 1950–Apr 1951 10-Month	45.6°F (7.6°C)	48.1°F (8.9°C)	-2.5°F (-1.3°C)	9th Coolest	Coolest since: 1936	1904
	45.6°F (7.6°C)	48.1°F (8.9°C)	-2.5°F (-1.3°C)	119th Warmest	Warmest since: 1950	2012
	Ties: 1936, 1982
Jun 1950–Apr 1951 11-Month	47.8°F (8.8°C)	50.3°F (10.2°C)	-2.5°F (-1.4°C)	9th Coolest	Coolest since: 1936	1904
	47.8°F (8.8°C)	50.3°F (10.2°C)	-2.5°F (-1.4°C)	119th Warmest	Warmest since: 1950	2017
	Ties: 1912
May 1950–Apr 1951 12-Month	49.2°F (9.6°C)	51.3°F (10.7°C)	-2.1°F (-1.1°C)	11th Coolest	Coolest since: 1936	1918
	49.2°F (9.6°C)	51.3°F (10.7°C)	-2.1°F (-1.1°C)	117th Warmest	Warmest since: 1950	2017
	Ties: 1993
Nov 1949–Apr 1951 18-Month	44.6°F (7.0°C)	45.9°F (7.7°C)	-1.3°F (-0.7°C)	16th Coolest	Coolest since: 1936	1979
	44.6°F (7.0°C)	45.9°F (7.7°C)	-1.3°F (-0.7°C)	111th Warmest	Warmest since: 1950	2017
	Ties: 1912, 1994
May 1949–Apr 1951 24-Month	50.5°F (10.3°C)	51.2°F (10.7°C)	-0.7°F (-0.4°C)	28th Coolest	Coolest since: 1930	1905
	50.5°F (10.3°C)	51.2°F (10.7°C)	-0.7°F (-0.4°C)	99th Warmest	Warmest since: 1950	2017
	Ties: 1927, 1930, 1983, 2010
May 1948–Apr 1951 36-Month	50.9°F (10.5°C)	51.2°F (10.7°C)	-0.3°F (-0.2°C)	41st Coolest	Coolest since: 1930	1979
	50.9°F (10.5°C)	51.2°F (10.7°C)	-0.3°F (-0.2°C)	85th Warmest	Warmest since: 1950	2018
	Ties: 1917, 1994, 2016
May 1947–Apr 1951 48-Month	51.1°F (10.6°C)	51.2°F (10.7°C)	-0.1°F (-0.1°C)	45th Coolest	Coolest since: 1930	1980
	51.1°F (10.6°C)	51.2°F (10.7°C)	-0.1°F (-0.1°C)	80th Warmest	Warmest since: 1950	1935
	Ties: 1909, 1914, 1921, 1959, 1975, 1983, 1995
May 1946–Apr 1951 60-Month	51.0°F (10.6°C)	51.2°F (10.7°C)	-0.2°F (-0.1°C)	38th Coolest	Coolest since: 1930	1906, 1979
	51.0°F (10.6°C)	51.2°F (10.7°C)	-0.2°F (-0.1°C)	86th Warmest	Warmest since: 1950	1935
	Ties: 1921, 1927, 1952, 1953, 1960, 1961, 1966, 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