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 1951

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 1951 1-Month	62.8°F (17.1°C)	61.0°F (16.1°C)	1.8°F (1.0°C)	85th Coolest	Coolest since: 1950	1907
	62.8°F (17.1°C)	61.0°F (16.1°C)	1.8°F (1.0°C)	44th Warmest	Warmest since: 1949	2018
	Ties: 1912
Apr–May 1951 2-Month	54.9°F (12.7°C)	55.5°F (13.1°C)	-0.6°F (-0.4°C)	43rd Coolest	Coolest since: 1950	1907
	54.9°F (12.7°C)	55.5°F (13.1°C)	-0.6°F (-0.4°C)	86th Warmest	Warmest since: 1949	1977
	Ties: 1937
Mar–May 1951 3-Month	48.4°F (9.1°C)	49.7°F (9.8°C)	-1.3°F (-0.7°C)	33rd Coolest	Coolest since: 1950	1960
	48.4°F (9.1°C)	49.7°F (9.8°C)	-1.3°F (-0.7°C)	96th Warmest	Warmest since: 1949	2012
	Ties: 1980, 2002
Feb–May 1951 4-Month	43.3°F (6.3°C)	44.2°F (6.8°C)	-0.9°F (-0.5°C)	45th Coolest	Coolest since: 1950	1978
	43.3°F (6.3°C)	44.2°F (6.8°C)	-0.9°F (-0.5°C)	84th Warmest	Warmest since: 1949	2012
	Ties: 1909
Jan–May 1951 5-Month	39.7°F (4.3°C)	40.1°F (4.5°C)	-0.4°F (-0.2°C)	50th Coolest	Coolest since: 1950	1978
	39.7°F (4.3°C)	40.1°F (4.5°C)	-0.4°F (-0.2°C)	79th Warmest	Warmest since: 1950	2012
	Ties: 1950
Dec 1950–May 1951 6-Month	36.2°F (2.3°C)	38.1°F (3.4°C)	-1.9°F (-1.1°C)	18th Coolest	Coolest since: 1940	1904, 1978
Dec 1950–May 1951 6-Month	36.2°F (2.3°C)	38.1°F (3.4°C)	-1.9°F (-1.1°C)	110th Warmest	Warmest since: 1950	2012
Nov 1950–May 1951 7-Month	35.8°F (2.1°C)	38.3°F (3.5°C)	-2.5°F (-1.4°C)	11th Coolest	Coolest since: 1936	1904
Nov 1950–May 1951 7-Month	35.8°F (2.1°C)	38.3°F (3.5°C)	-2.5°F (-1.4°C)	117th Warmest	Warmest since: 1950	2012
Oct 1950–May 1951 8-Month	38.6°F (3.7°C)	40.2°F (4.6°C)	-1.6°F (-0.9°C)	21st Coolest	Coolest since: 1940	1904
	38.6°F (3.7°C)	40.2°F (4.6°C)	-1.6°F (-0.9°C)	107th Warmest	Warmest since: 1950	2012
	Ties: 1970
Sep 1950–May 1951 9-Month	41.4°F (5.2°C)	43.0°F (6.1°C)	-1.6°F (-0.9°C)	20th Coolest	Coolest since: 1936	1904
	41.4°F (5.2°C)	43.0°F (6.1°C)	-1.6°F (-0.9°C)	108th Warmest	Warmest since: 1950	2012
	Ties: 1960, 1970
Aug 1950–May 1951 10-Month	44.1°F (6.7°C)	45.9°F (7.7°C)	-1.8°F (-1.0°C)	14th Coolest	Coolest since: 1936	1904
	44.1°F (6.7°C)	45.9°F (7.7°C)	-1.8°F (-1.0°C)	114th Warmest	Warmest since: 1950	2012
	Ties: 1926, 1963
Jul 1950–May 1951 11-Month	46.6°F (8.1°C)	48.5°F (9.2°C)	-1.9°F (-1.1°C)	11th Coolest	Coolest since: 1918	1904
	46.6°F (8.1°C)	48.5°F (9.2°C)	-1.9°F (-1.1°C)	117th Warmest	Warmest since: 1950	2012
	Ties: 1963
Jun 1950–May 1951 12-Month	48.5°F (9.2°C)	50.3°F (10.2°C)	-1.8°F (-1.0°C)	8th Coolest	Coolest since: 1936	1904
	48.5°F (9.2°C)	50.3°F (10.2°C)	-1.8°F (-1.0°C)	120th Warmest	Warmest since: 1950	2012
	Ties: 1899, 1977, 1979
Dec 1949–May 1951 18-Month	45.2°F (7.3°C)	46.2°F (7.9°C)	-1.0°F (-0.6°C)	22nd Coolest	Coolest since: 1936	1905
	45.2°F (7.3°C)	46.2°F (7.9°C)	-1.0°F (-0.6°C)	105th Warmest	Warmest since: 1950	2017
	Ties: 1968
Jun 1949–May 1951 24-Month	49.8°F (9.9°C)	50.3°F (10.2°C)	-0.5°F (-0.3°C)	36th Coolest	Coolest since: 1937	1905
	49.8°F (9.9°C)	50.3°F (10.2°C)	-0.5°F (-0.3°C)	91st Warmest	Warmest since: 1950	2017
	Ties: 1929, 1937, 1961, 1983
Jun 1948–May 1951 36-Month	50.4°F (10.2°C)	50.3°F (10.2°C)	0.1°F (0.0°C)	60th Coolest	Coolest since: 1948	1905, 1906
	50.4°F (10.2°C)	50.3°F (10.2°C)	0.1°F (0.0°C)	66th Warmest	Warmest since: 1950	2018
	Ties: 1937, 1947, 1948, 2016
Jun 1947–May 1951 48-Month	50.4°F (10.2°C)	50.3°F (10.2°C)	0.1°F (0.0°C)	58th Coolest	Coolest since: 1946	1905
	50.4°F (10.2°C)	50.3°F (10.2°C)	0.1°F (0.0°C)	67th Warmest	Warmest since: 1950	2019
	Ties: 1925
Jun 1946–May 1951 60-Month	50.4°F (10.2°C)	50.3°F (10.2°C)	0.1°F (0.0°C)	54th Coolest	Coolest since: 1947	1905, 1906, 1908
	50.4°F (10.2°C)	50.3°F (10.2°C)	0.1°F (0.0°C)	70th Warmest	Warmest since: 1950	2020
	Ties: 1940, 1977, 1985

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