Divisional Rankings

Parameter:

Year:

Month:

State:

Division:

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 1999

View Period (Months):

All

Download:

Record Coolest

Bottom 1/10

Bottom 1/3

Normal

Top 1/3

Top 1/10

Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 1999 1-Month	64.2°F (17.9°C)	61.0°F (16.1°C)	3.2°F (1.8°C)	100th Coolest	Coolest since: 1997	1907
	64.2°F (17.9°C)	61.0°F (16.1°C)	3.2°F (1.8°C)	29th Warmest	Warmest since: 1998	2018
	Ties: 2000, 2001
Apr–May 1999 2-Month	58.5°F (14.7°C)	55.4°F (13.0°C)	3.1°F (1.7°C)	112th Coolest	Coolest since: 1997	1907
Apr–May 1999 2-Month	58.5°F (14.7°C)	55.4°F (13.0°C)	3.1°F (1.7°C)	17th Warmest	Warmest since: 1998	1977
Mar–May 1999 3-Month	51.2°F (10.7°C)	49.7°F (9.8°C)	1.5°F (0.9°C)	92nd Coolest	Coolest since: 1997	1960
	51.2°F (10.7°C)	49.7°F (9.8°C)	1.5°F (0.9°C)	37th Warmest	Warmest since: 1998	2012
	Ties: 1959, 2003, 2015
Feb–May 1999 4-Month	47.3°F (8.5°C)	44.2°F (6.8°C)	3.1°F (1.7°C)	114th Coolest	Coolest since: 1997	1978
Feb–May 1999 4-Month	47.3°F (8.5°C)	44.2°F (6.8°C)	3.1°F (1.7°C)	15th Warmest	Warmest since: 1998	2012
Jan–May 1999 5-Month	42.4°F (5.8°C)	40.1°F (4.5°C)	2.3°F (1.3°C)	111th Coolest	Coolest since: 1997	1978
	42.4°F (5.8°C)	40.1°F (4.5°C)	2.3°F (1.3°C)	18th Warmest	Warmest since: 1998	2012
	Ties: 1896, 1932
Dec 1998–May 1999 6-Month	41.1°F (5.1°C)	38.1°F (3.4°C)	3.0°F (1.7°C)	116th Coolest	Coolest since: 1997	1978
Dec 1998–May 1999 6-Month	41.1°F (5.1°C)	38.1°F (3.4°C)	3.0°F (1.7°C)	12th Warmest	Warmest since: 1998	2012
Nov 1998–May 1999 7-Month	41.6°F (5.3°C)	38.3°F (3.5°C)	3.3°F (1.8°C)	118th Coolest	Coolest since: 1997	1904
	41.6°F (5.3°C)	38.3°F (3.5°C)	3.3°F (1.8°C)	10th Warmest	Warmest since: 1998	2012
	Ties: 2006
Oct 1998–May 1999 8-Month	43.4°F (6.3°C)	40.2°F (4.6°C)	3.2°F (1.7°C)	118th Coolest	Coolest since: 1997	1904
Oct 1998–May 1999 8-Month	43.4°F (6.3°C)	40.2°F (4.6°C)	3.2°F (1.7°C)	10th Warmest	Warmest since: 1998	2012
Sep 1998–May 1999 9-Month	46.4°F (8.0°C)	43.0°F (6.1°C)	3.4°F (1.9°C)	122nd Coolest	Coolest since: 1998	1904
Sep 1998–May 1999 9-Month	46.4°F (8.0°C)	43.0°F (6.1°C)	3.4°F (1.9°C)	6th Warmest	Warmest since: 1932	2012
Aug 1998–May 1999 10-Month	49.2°F (9.6°C)	45.9°F (7.7°C)	3.3°F (1.9°C)	123rd Coolest	Coolest since: 1998	1904
Aug 1998–May 1999 10-Month	49.2°F (9.6°C)	45.9°F (7.7°C)	3.3°F (1.9°C)	5th Warmest	Warmest since: 1932	2012
Jul 1998–May 1999 11-Month	51.4°F (10.8°C)	48.5°F (9.2°C)	2.9°F (1.6°C)	123rd Coolest	Coolest since: 1998	1904
	51.4°F (10.8°C)	48.5°F (9.2°C)	2.9°F (1.6°C)	5th Warmest	Warmest since: 1932	2012
	Ties: 2006
Jun 1998–May 1999 12-Month	53.0°F (11.7°C)	50.3°F (10.2°C)	2.7°F (1.5°C)	122nd Coolest	Coolest since: 1998	1904
Jun 1998–May 1999 12-Month	53.0°F (11.7°C)	50.3°F (10.2°C)	2.7°F (1.5°C)	6th Warmest	Warmest since: 1932	2012
Dec 1997–May 1999 18-Month	49.8°F (9.9°C)	46.2°F (7.9°C)	3.6°F (2.0°C)	125th Coolest	Coolest since: 1998	1905
Dec 1997–May 1999 18-Month	49.8°F (9.9°C)	46.2°F (7.9°C)	3.6°F (2.0°C)	2nd Warmest	Warmest to Date	2017
Jun 1997–May 1999 24-Month	52.7°F (11.5°C)	50.3°F (10.2°C)	2.4°F (1.3°C)	121st Coolest	Coolest since: 1998	1905
	52.7°F (11.5°C)	50.3°F (10.2°C)	2.4°F (1.3°C)	6th Warmest	Warmest since: 1932	2017
	Ties: 1932
Jun 1996–May 1999 36-Month	51.6°F (10.9°C)	50.3°F (10.2°C)	1.3°F (0.7°C)	106th Coolest	Coolest since: 1998	1905, 1906
	51.6°F (10.9°C)	50.3°F (10.2°C)	1.3°F (0.7°C)	20th Warmest	Warmest since: 1992	2018
	Ties: 1989, 2004, 2014
Jun 1995–May 1999 48-Month	51.1°F (10.6°C)	50.2°F (10.1°C)	0.9°F (0.5°C)	89th Coolest	Coolest since: 1998	1905
	51.1°F (10.6°C)	50.2°F (10.1°C)	0.9°F (0.5°C)	36th Warmest	Warmest since: 1993	2019
	Ties: 1923, 1987, 2015
Jun 1994–May 1999 60-Month	51.2°F (10.7°C)	50.2°F (10.1°C)	1.0°F (0.6°C)	92nd Coolest	Coolest since: 1998	1905, 1906, 1908
	51.2°F (10.7°C)	50.2°F (10.1°C)	1.0°F (0.6°C)	32nd Warmest	Warmest since: 1993	2020
	Ties: 1990

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on February 6, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings