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 8. Southwest

Average Temperature Rankings, April 1909

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2023)	Warmest/Coolest Since	Record
April 1909 1-Month	54.1°F (12.3°C)	55.3°F (12.9°C)	-1.2°F (-0.6°C)	41st Coolest	Coolest since: 1907	1907
	54.1°F (12.3°C)	55.3°F (12.9°C)	-1.2°F (-0.6°C)	89th Warmest	Warmest since: 1908	1896
	Ties: 1975
Mar–Apr 1909 2-Month	48.8°F (9.3°C)	50.0°F (10.0°C)	-1.2°F (-0.7°C)	43rd Coolest	Coolest since: 1906	1960
Mar–Apr 1909 2-Month	48.8°F (9.3°C)	50.0°F (10.0°C)	-1.2°F (-0.7°C)	87th Warmest	Warmest since: 1908	2012
Feb–Apr 1909 3-Month	45.3°F (7.4°C)	44.9°F (7.2°C)	0.4°F (0.2°C)	67th Coolest	Coolest since: 1907	1899
	45.3°F (7.4°C)	44.9°F (7.2°C)	0.4°F (0.2°C)	63rd Warmest	Warmest since: 1908	2012
	Ties: 1903
Jan–Apr 1909 4-Month	42.1°F (5.6°C)	41.5°F (5.3°C)	0.6°F (0.3°C)	74th Coolest	Coolest since: 1906	1978
	42.1°F (5.6°C)	41.5°F (5.3°C)	0.6°F (0.3°C)	56th Warmest	Warmest since: 1908	2012
	Ties: 1942, 1957
Dec 1908–Apr 1909 5-Month	41.2°F (5.1°C)	40.1°F (4.5°C)	1.1°F (0.6°C)	81st Coolest	Coolest since: 1906	1978
	41.2°F (5.1°C)	40.1°F (4.5°C)	1.1°F (0.6°C)	48th Warmest	Warmest since: 1908	2012
	Ties: 1989, 2013
Nov 1908–Apr 1909 6-Month	42.1°F (5.6°C)	40.9°F (4.9°C)	1.2°F (0.7°C)	93rd Coolest	Coolest since: 1908	1912
	42.1°F (5.6°C)	40.9°F (4.9°C)	1.2°F (0.7°C)	36th Warmest	Warmest to Date	2012
	Ties: 1942, 1949, 1950, 1957
Oct 1908–Apr 1909 7-Month	44.1°F (6.7°C)	43.2°F (6.2°C)	0.9°F (0.5°C)	88th Coolest	Coolest since: 1908	1899, 1978
	44.1°F (6.7°C)	43.2°F (6.2°C)	0.9°F (0.5°C)	41st Warmest	Warmest since: 1903	2012
	Ties: 1898, 1922, 1941
Sep 1908–Apr 1909 8-Month	47.6°F (8.7°C)	46.5°F (8.1°C)	1.1°F (0.6°C)	97th Coolest	Coolest since: 1908	1918
	47.6°F (8.7°C)	46.5°F (8.1°C)	1.1°F (0.6°C)	32nd Warmest	Warmest since: 1898	2017
	Ties: 1919, 1934, 1938, 1986, 2008
Aug 1908–Apr 1909 9-Month	50.8°F (10.4°C)	49.8°F (9.9°C)	1.0°F (0.5°C)	94th Coolest	Coolest since: 1908	1918
	50.8°F (10.4°C)	49.8°F (9.9°C)	1.0°F (0.5°C)	35th Warmest	Warmest since: 1898	2017
	Ties: 1898, 1922, 2007
Jul 1908–Apr 1909 10-Month	53.4°F (11.9°C)	52.6°F (11.4°C)	0.8°F (0.5°C)	89th Coolest	Coolest since: 1908	1918
	53.4°F (11.9°C)	52.6°F (11.4°C)	0.8°F (0.5°C)	40th Warmest	Warmest since: 1898	2012
	Ties: 1914, 1925, 1953, 2013, 2019
Jun 1908–Apr 1909 11-Month	55.1°F (12.8°C)	54.5°F (12.5°C)	0.6°F (0.3°C)	82nd Coolest	Coolest since: 1908	1918
	55.1°F (12.8°C)	54.5°F (12.5°C)	0.6°F (0.3°C)	47th Warmest	Warmest since: 1898	2012, 2017
	Ties: 1915, 1925, 1945, 1989
May 1908–Apr 1909 12-Month	56.1°F (13.4°C)	55.4°F (13.0°C)	0.7°F (0.4°C)	86th Coolest	Coolest since: 1908	1918
	56.1°F (13.4°C)	55.4°F (13.0°C)	0.7°F (0.4°C)	43rd Warmest	Warmest to Date	2012, 2017
	Ties: 1915, 1995, 2004
Nov 1907–Apr 1909 18-Month	51.3°F (10.7°C)	50.5°F (10.3°C)	0.8°F (0.4°C)	91st Coolest	Coolest since: 1908	1905, 1979
	51.3°F (10.7°C)	50.5°F (10.3°C)	0.8°F (0.4°C)	37th Warmest	Warmest to Date	2017
	Ties: 1915, 1950
May 1907–Apr 1909 24-Month	55.4°F (13.0°C)	55.4°F (13.0°C)	0.0°F (0.0°C)	54th Coolest	Coolest since: 1908	1978
	55.4°F (13.0°C)	55.4°F (13.0°C)	0.0°F (0.0°C)	74th Warmest	Warmest since: 1901	2017
	Ties: 1897, 1916, 1947, 1965, 1981
May 1906–Apr 1909 36-Month	55.5°F (13.1°C)	55.4°F (13.0°C)	0.1°F (0.1°C)	59th Coolest	Coolest since: 1908	1979
	55.5°F (13.1°C)	55.4°F (13.0°C)	0.1°F (0.1°C)	68th Warmest	Warmest since: 1898	2018
	Ties: 1898, 1938, 1948, 1966, 1967, 1994
May 1905–Apr 1909 48-Month	55.3°F (12.9°C)	55.3°F (12.9°C)	0.0°F (0.0°C)	49th Coolest	Coolest since: 1908	1980
	55.3°F (12.9°C)	55.3°F (12.9°C)	0.0°F (0.0°C)	77th Warmest	Warmest since: 1903	2019
	Ties: 1903, 1915, 1926, 1953, 1986, 1998
May 1904–Apr 1909 60-Month	54.9°F (12.7°C)	55.3°F (12.9°C)	-0.4°F (-0.2°C)	22nd Coolest	Coolest since: 1908	1980, 1981
	54.9°F (12.7°C)	55.3°F (12.9°C)	-0.4°F (-0.2°C)	103rd Warmest	Warmest since: 1903	2020
	Ties: 1902, 1903, 1912, 1919, 1930, 1965, 1973, 1984

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published May 2023, retrieved on June 7, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings