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 5. East

Average Temperature Rankings, May 1909

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 1909 1-Month	57.8°F (14.3°C)	61.0°F (16.1°C)	-3.2°F (-1.8°C)	25th Coolest	Coolest since: 1907	1907
	57.8°F (14.3°C)	61.0°F (16.1°C)	-3.2°F (-1.8°C)	104th Warmest	Warmest since: 1908	2018
	Ties: 1946
Apr–May 1909 2-Month	52.6°F (11.4°C)	55.4°F (13.0°C)	-2.8°F (-1.6°C)	12th Coolest	Coolest since: 1907	1907
	52.6°F (11.4°C)	55.4°F (13.0°C)	-2.8°F (-1.6°C)	117th Warmest	Warmest since: 1908	1977
	Ties: 1901
Mar–May 1909 3-Month	47.2°F (8.4°C)	49.7°F (9.8°C)	-2.5°F (-1.4°C)	13th Coolest	Coolest since: 1907	1960
	47.2°F (8.4°C)	49.7°F (9.8°C)	-2.5°F (-1.4°C)	116th Warmest	Warmest since: 1908	2012
	Ties: 1901, 1923, 1943
Feb–May 1909 4-Month	43.2°F (6.2°C)	44.1°F (6.7°C)	-0.9°F (-0.5°C)	41st Coolest	Coolest since: 1907	1978
	43.2°F (6.2°C)	44.1°F (6.7°C)	-0.9°F (-0.5°C)	88th Warmest	Warmest since: 1908	2012
	Ties: 1963, 1971, 1975, 1993
Jan–May 1909 5-Month	40.0°F (4.4°C)	40.1°F (4.5°C)	-0.1°F (-0.1°C)	57th Coolest	Coolest since: 1907	1978
	40.0°F (4.4°C)	40.1°F (4.5°C)	-0.1°F (-0.1°C)	72nd Warmest	Warmest since: 1908	2012
	Ties: 1959, 2019
Dec 1908–May 1909 6-Month	38.2°F (3.4°C)	38.1°F (3.4°C)	0.1°F (0.0°C)	62nd Coolest	Coolest since: 1907	1978
	38.2°F (3.4°C)	38.1°F (3.4°C)	0.1°F (0.0°C)	66th Warmest	Warmest since: 1908	2012
	Ties: 1937, 1993
Nov 1908–May 1909 7-Month	38.5°F (3.6°C)	38.4°F (3.6°C)	0.1°F (0.0°C)	60th Coolest	Coolest since: 1907	1904
	38.5°F (3.6°C)	38.4°F (3.6°C)	0.1°F (0.0°C)	68th Warmest	Warmest since: 1908	2012
	Ties: 1928, 1930, 1945, 1965, 1966, 1993
Oct 1908–May 1909 8-Month	40.3°F (4.6°C)	40.2°F (4.6°C)	0.1°F (0.0°C)	58th Coolest	Coolest since: 1908	1904
	40.3°F (4.6°C)	40.2°F (4.6°C)	0.1°F (0.0°C)	70th Warmest	Warmest since: 1903	2012
	Ties: 1929, 1944, 1945, 1947, 1952, 1966, 1993, 2001
Sep 1908–May 1909 9-Month	43.4°F (6.3°C)	43.0°F (6.1°C)	0.4°F (0.2°C)	75th Coolest	Coolest since: 1908	1904
	43.4°F (6.3°C)	43.0°F (6.1°C)	0.4°F (0.2°C)	53rd Warmest	Warmest since: 1898	2012
	Ties: 1973
Aug 1908–May 1909 10-Month	46.3°F (7.9°C)	45.9°F (7.7°C)	0.4°F (0.2°C)	71st Coolest	Coolest since: 1908	1904
	46.3°F (7.9°C)	45.9°F (7.7°C)	0.4°F (0.2°C)	57th Warmest	Warmest since: 1898	2012
	Ties: 1935, 1973
Jul 1908–May 1909 11-Month	48.8°F (9.3°C)	48.5°F (9.2°C)	0.3°F (0.1°C)	70th Coolest	Coolest since: 1908	1904
	48.8°F (9.3°C)	48.5°F (9.2°C)	0.3°F (0.1°C)	58th Warmest	Warmest since: 1898	2012
	Ties: 1933, 2003
Jun 1908–May 1909 12-Month	50.5°F (10.3°C)	50.4°F (10.2°C)	0.1°F (0.1°C)	66th Coolest	Coolest since: 1908	1904
	50.5°F (10.3°C)	50.4°F (10.2°C)	0.1°F (0.1°C)	62nd Warmest	Warmest since: 1898	2012
	Ties: 1915, 1986
Dec 1907–May 1909 18-Month	46.6°F (8.1°C)	46.2°F (7.9°C)	0.4°F (0.2°C)	73rd Coolest	Coolest since: 1908	1905
	46.6°F (8.1°C)	46.2°F (7.9°C)	0.4°F (0.2°C)	54th Warmest	Warmest to Date	2017
	Ties: 1915, 1938, 1947
Jun 1907–May 1909 24-Month	49.9°F (9.9°C)	50.3°F (10.2°C)	-0.4°F (-0.3°C)	41st Coolest	Coolest since: 1908	1905
	49.9°F (9.9°C)	50.3°F (10.2°C)	-0.4°F (-0.3°C)	86th Warmest	Warmest since: 1901	2017
	Ties: 1897, 1898, 1901, 1910, 1924, 1962, 1982
Jun 1906–May 1909 36-Month	49.8°F (9.9°C)	50.3°F (10.2°C)	-0.5°F (-0.3°C)	34th Coolest	Coolest since: 1908	1905, 1906
	49.8°F (9.9°C)	50.3°F (10.2°C)	-0.5°F (-0.3°C)	92nd Warmest	Warmest since: 1900	2018
	Ties: 1900, 1930, 1962, 1964, 1982, 1984
Jun 1905–May 1909 48-Month	49.8°F (9.9°C)	50.3°F (10.2°C)	-0.5°F (-0.3°C)	31st Coolest	Coolest since: 1908	1905
	49.8°F (9.9°C)	50.3°F (10.2°C)	-0.5°F (-0.3°C)	94th Warmest	Warmest since: 1901	2019
	Ties: 1899, 1901, 1911, 1914, 1930, 1964
Jun 1904–May 1909 60-Month	49.4°F (9.7°C)	50.2°F (10.1°C)	-0.8°F (-0.4°C)	12th Coolest	Coolest since: 1908	1905, 1906, 1908
	49.4°F (9.7°C)	50.2°F (10.1°C)	-0.8°F (-0.4°C)	112th Warmest	Warmest since: 1903	2020
	Ties: 1903, 1912, 1918

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on February 3, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings