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 1988

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 1988 1-Month	64.4°F (18.0°C)	61.0°F (16.1°C)	3.4°F (1.9°C)	103rd Coolest	Coolest since: 1986	1907
	64.4°F (18.0°C)	61.0°F (16.1°C)	3.4°F (1.9°C)	26th Warmest	Warmest since: 1987	2018
	Ties: 1970
Apr–May 1988 2-Month	57.4°F (14.1°C)	55.5°F (13.1°C)	1.9°F (1.0°C)	100th Coolest	Coolest since: 1984	1907
Apr–May 1988 2-Month	57.4°F (14.1°C)	55.5°F (13.1°C)	1.9°F (1.0°C)	29th Warmest	Warmest since: 1987	1977
Mar–May 1988 3-Month	51.4°F (10.8°C)	49.7°F (9.8°C)	1.7°F (1.0°C)	98th Coolest	Coolest since: 1984	1960
	51.4°F (10.8°C)	49.7°F (9.8°C)	1.7°F (1.0°C)	31st Warmest	Warmest since: 1987	2012
	Ties: 1963, 2009
Feb–May 1988 4-Month	44.7°F (7.1°C)	44.2°F (6.8°C)	0.5°F (0.3°C)	78th Coolest	Coolest since: 1984	1978
	44.7°F (7.1°C)	44.2°F (6.8°C)	0.5°F (0.3°C)	51st Warmest	Warmest since: 1987	2012
	Ties: 1962
Jan–May 1988 5-Month	40.2°F (4.6°C)	40.1°F (4.5°C)	0.1°F (0.1°C)	61st Coolest	Coolest since: 1984	1978
	40.2°F (4.6°C)	40.1°F (4.5°C)	0.1°F (0.1°C)	68th Warmest	Warmest since: 1987	2012
	Ties: 1957, 1975
Dec 1987–May 1988 6-Month	39.0°F (3.9°C)	38.1°F (3.4°C)	0.9°F (0.5°C)	81st Coolest	Coolest since: 1986	1978
	39.0°F (3.9°C)	38.1°F (3.4°C)	0.9°F (0.5°C)	47th Warmest	Warmest since: 1987	2012
	Ties: 1908, 1911, 1957, 1974
Nov 1987–May 1988 7-Month	39.8°F (4.3°C)	38.3°F (3.5°C)	1.5°F (0.8°C)	95th Coolest	Coolest since: 1986	1904
	39.8°F (4.3°C)	38.3°F (3.5°C)	1.5°F (0.8°C)	33rd Warmest	Warmest since: 1987	2012
	Ties: 1938, 1946
Oct 1987–May 1988 8-Month	40.8°F (4.9°C)	40.3°F (4.6°C)	0.5°F (0.3°C)	78th Coolest	Coolest since: 1984	1904
	40.8°F (4.9°C)	40.3°F (4.6°C)	0.5°F (0.3°C)	50th Warmest	Warmest since: 1987	2012
	Ties: 1928, 1935
Sep 1987–May 1988 9-Month	43.6°F (6.4°C)	43.0°F (6.1°C)	0.6°F (0.3°C)	80th Coolest	Coolest since: 1984	1904
	43.6°F (6.4°C)	43.0°F (6.1°C)	0.6°F (0.3°C)	48th Warmest	Warmest since: 1987	2012
	Ties: 1914, 1938
Aug 1987–May 1988 10-Month	46.5°F (8.1°C)	45.9°F (7.7°C)	0.6°F (0.4°C)	80th Coolest	Coolest since: 1986	1904
	46.5°F (8.1°C)	45.9°F (7.7°C)	0.6°F (0.4°C)	48th Warmest	Warmest since: 1987	2012
	Ties: 1964, 1986, 1989, 1990, 2019
Jul 1987–May 1988 11-Month	49.2°F (9.6°C)	48.5°F (9.2°C)	0.7°F (0.4°C)	83rd Coolest	Coolest since: 1986	1904
	49.2°F (9.6°C)	48.5°F (9.2°C)	0.7°F (0.4°C)	45th Warmest	Warmest since: 1987	2012
	Ties: 1898, 1938, 1957
Jun 1987–May 1988 12-Month	51.2°F (10.7°C)	50.3°F (10.2°C)	0.9°F (0.5°C)	88th Coolest	Coolest since: 1986	1904
	51.2°F (10.7°C)	50.3°F (10.2°C)	0.9°F (0.5°C)	40th Warmest	Warmest since: 1987	2012
	Ties: 1957, 2008, 2011, 2018
Dec 1986–May 1988 18-Month	48.1°F (8.9°C)	46.2°F (7.9°C)	1.9°F (1.0°C)	111th Coolest	Coolest since: 1987	1905
	48.1°F (8.9°C)	46.2°F (7.9°C)	1.9°F (1.0°C)	16th Warmest	Warmest since: 1955	2017
	Ties: 1939, 2022
Jun 1986–May 1988 24-Month	51.8°F (11.0°C)	50.3°F (10.2°C)	1.5°F (0.8°C)	111th Coolest	Coolest since: 1987	1905
Jun 1986–May 1988 24-Month	51.8°F (11.0°C)	50.3°F (10.2°C)	1.5°F (0.8°C)	16th Warmest	Warmest since: 1955	2017
Jun 1985–May 1988 36-Month	51.4°F (10.8°C)	50.3°F (10.2°C)	1.1°F (0.6°C)	98th Coolest	Coolest since: 1986	1905, 1906
	51.4°F (10.8°C)	50.3°F (10.2°C)	1.1°F (0.6°C)	28th Warmest	Warmest since: 1987	2018
	Ties: 1935, 1957, 2020
Jun 1984–May 1988 48-Month	51.5°F (10.8°C)	50.3°F (10.2°C)	1.2°F (0.6°C)	103rd Coolest	Coolest since: 1987	1905
	51.5°F (10.8°C)	50.3°F (10.2°C)	1.2°F (0.6°C)	22nd Warmest	Warmest since: 1957	2019
	Ties: 1933, 1991, 2014, 2017
Jun 1983–May 1988 60-Month	51.1°F (10.6°C)	50.2°F (10.1°C)	0.9°F (0.5°C)	90th Coolest	Coolest since: 1987	1905, 1906, 1908
	51.1°F (10.6°C)	50.2°F (10.1°C)	0.9°F (0.5°C)	34th Warmest	Warmest since: 1987	2020
	Ties: 1923, 1933, 1942, 1987, 1995, 2015

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on January 28, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings