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 7. East Southeast

Average Temperature Rankings, May 1998

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 1998 1-Month	68.1°F (20.1°C)	63.2°F (17.3°C)	4.9°F (2.8°C)	116th Coolest	Coolest since: 1997	1924
May 1998 1-Month	68.1°F (20.1°C)	63.2°F (17.3°C)	4.9°F (2.8°C)	13th Warmest	Warmest since: 1991	2018
Apr–May 1998 2-Month	61.0°F (16.1°C)	58.0°F (14.4°C)	3.0°F (1.7°C)	113th Coolest	Coolest since: 1997	1907
Apr–May 1998 2-Month	61.0°F (16.1°C)	58.0°F (14.4°C)	3.0°F (1.7°C)	16th Warmest	Warmest since: 1991	1896
Mar–May 1998 3-Month	54.7°F (12.6°C)	52.5°F (11.4°C)	2.2°F (1.2°C)	108th Coolest	Coolest since: 1997	1960
	54.7°F (12.6°C)	52.5°F (11.4°C)	2.2°F (1.2°C)	21st Warmest	Warmest since: 1991	2012
	Ties: 1942, 1945
Feb–May 1998 4-Month	51.3°F (10.7°C)	47.3°F (8.5°C)	4.0°F (2.2°C)	122nd Coolest	Coolest since: 1997	1978
	51.3°F (10.7°C)	47.3°F (8.5°C)	4.0°F (2.2°C)	7th Warmest	Warmest since: 1991	2012
	Ties: 1946
Jan–May 1998 5-Month	48.0°F (8.9°C)	43.4°F (6.3°C)	4.6°F (2.6°C)	125th Coolest	Coolest since: 1997	1978
Jan–May 1998 5-Month	48.0°F (8.9°C)	43.4°F (6.3°C)	4.6°F (2.6°C)	4th Warmest	Warmest since: 1921	2012
Dec 1997–May 1998 6-Month	45.6°F (7.6°C)	41.5°F (5.3°C)	4.1°F (2.3°C)	124th Coolest	Coolest since: 1997	1978
Dec 1997–May 1998 6-Month	45.6°F (7.6°C)	41.5°F (5.3°C)	4.1°F (2.3°C)	4th Warmest	Warmest since: 1921	2012
Nov 1997–May 1998 7-Month	44.7°F (7.1°C)	41.5°F (5.3°C)	3.2°F (1.8°C)	119th Coolest	Coolest since: 1997	1978
Nov 1997–May 1998 7-Month	44.7°F (7.1°C)	41.5°F (5.3°C)	3.2°F (1.8°C)	9th Warmest	Warmest since: 1991	2012
Oct 1997–May 1998 8-Month	46.1°F (7.8°C)	43.3°F (6.3°C)	2.8°F (1.5°C)	119th Coolest	Coolest since: 1997	1978
Oct 1997–May 1998 8-Month	46.1°F (7.8°C)	43.3°F (6.3°C)	2.8°F (1.5°C)	9th Warmest	Warmest since: 1991	2012
Sep 1997–May 1998 9-Month	48.4°F (9.1°C)	45.9°F (7.7°C)	2.5°F (1.4°C)	118th Coolest	Coolest since: 1997	1978
	48.4°F (9.1°C)	45.9°F (7.7°C)	2.5°F (1.4°C)	10th Warmest	Warmest since: 1991	2012
	Ties: 2002
Aug 1997–May 1998 10-Month	50.8°F (10.4°C)	48.8°F (9.3°C)	2.0°F (1.1°C)	116th Coolest	Coolest since: 1997	1978
	50.8°F (10.4°C)	48.8°F (9.3°C)	2.0°F (1.1°C)	12th Warmest	Warmest since: 1992	2012
	Ties: 1942, 1954, 1992
Jul 1997–May 1998 11-Month	53.1°F (11.7°C)	51.3°F (10.7°C)	1.8°F (1.0°C)	112th Coolest	Coolest since: 1997	1904
	53.1°F (11.7°C)	51.3°F (10.7°C)	1.8°F (1.0°C)	16th Warmest	Warmest since: 1992	2012
	Ties: 1922
Jun 1997–May 1998 12-Month	54.6°F (12.6°C)	53.1°F (11.7°C)	1.5°F (0.9°C)	109th Coolest	Coolest since: 1997	1904
	54.6°F (12.6°C)	53.1°F (11.7°C)	1.5°F (0.9°C)	19th Warmest	Warmest since: 1992	2012
	Ties: 1974
Dec 1996–May 1998 18-Month	50.1°F (10.1°C)	49.2°F (9.6°C)	0.9°F (0.5°C)	94th Coolest	Coolest since: 1997	1979
	50.1°F (10.1°C)	49.2°F (9.6°C)	0.9°F (0.5°C)	33rd Warmest	Warmest since: 1992	2017
	Ties: 1914, 1976, 2002
Jun 1996–May 1998 24-Month	53.4°F (11.9°C)	53.1°F (11.7°C)	0.3°F (0.2°C)	73rd Coolest	Coolest since: 1997	1905, 1978
	53.4°F (11.9°C)	53.1°F (11.7°C)	0.3°F (0.2°C)	54th Warmest	Warmest since: 1993	2017
	Ties: 1946, 1972
Jun 1995–May 1998 36-Month	53.0°F (11.7°C)	53.1°F (11.7°C)	-0.1°F (0.0°C)	56th Coolest	Coolest since: 1997	1979
	53.0°F (11.7°C)	53.1°F (11.7°C)	-0.1°F (0.0°C)	70th Warmest	Warmest since: 1994	2018
	Ties: 1898, 1958, 1966
Jun 1994–May 1998 48-Month	53.3°F (11.8°C)	53.0°F (11.7°C)	0.3°F (0.1°C)	65th Coolest	Coolest since: 1997	1980
	53.3°F (11.8°C)	53.0°F (11.7°C)	0.3°F (0.1°C)	60th Warmest	Warmest since: 1995	2019
	Ties: 1946, 1954
Jun 1993–May 1998 60-Month	53.1°F (11.7°C)	53.0°F (11.7°C)	0.1°F (0.0°C)	55th Coolest	Coolest since: 1997	1981
	53.1°F (11.7°C)	53.0°F (11.7°C)	0.1°F (0.0°C)	69th Warmest	Warmest since: 1996	2020
	Ties: 1926, 1974, 1996

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