Statewide 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

Average Temperature Rankings, October 1998

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Record Coolest
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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
October 1998 1-Month	56.6°F (13.7°C)	54.6°F (12.6°C)	2.0°F (1.1°C)	96th Coolest	Coolest since: 1997	1925
	56.6°F (13.7°C)	54.6°F (12.6°C)	2.0°F (1.1°C)	33rd Warmest	Warmest since: 1984	1963
	Ties: 1928
Sep–Oct 1998 2-Month	63.8°F (17.7°C)	60.5°F (15.8°C)	3.3°F (1.9°C)	117th Coolest	Coolest since: 1997	1917
Sep–Oct 1998 2-Month	63.8°F (17.7°C)	60.5°F (15.8°C)	3.3°F (1.9°C)	12th Warmest	Warmest since: 1971	1897
Aug–Oct 1998 3-Month	67.4°F (19.7°C)	64.8°F (18.2°C)	2.6°F (1.5°C)	119th Coolest	Coolest since: 1997	1917
	67.4°F (19.7°C)	64.8°F (18.2°C)	2.6°F (1.5°C)	10th Warmest	Warmest since: 1971	1947
	Ties: 1971
Jul–Oct 1998 4-Month	69.4°F (20.8°C)	67.5°F (19.7°C)	1.9°F (1.1°C)	114th Coolest	Coolest since: 1997	1917
	69.4°F (20.8°C)	67.5°F (19.7°C)	1.9°F (1.1°C)	15th Warmest	Warmest since: 1983	1936
	Ties: 1954
Jun–Oct 1998 5-Month	69.9°F (21.1°C)	68.2°F (20.1°C)	1.7°F (1.0°C)	108th Coolest	Coolest since: 1997	1917
	69.9°F (21.1°C)	68.2°F (20.1°C)	1.7°F (1.0°C)	21st Warmest	Warmest since: 1983	1936
	Ties: 1938, 1971
May–Oct 1998 6-Month	69.5°F (20.8°C)	67.2°F (19.6°C)	2.3°F (1.2°C)	122nd Coolest	Coolest since: 1997	1917
	69.5°F (20.8°C)	67.2°F (19.6°C)	2.3°F (1.2°C)	7th Warmest	Warmest since: 1991	1936
	Ties: 1921, 1941, 1991
Apr–Oct 1998 7-Month	67.1°F (19.5°C)	65.0°F (18.3°C)	2.1°F (1.2°C)	120th Coolest	Coolest since: 1997	1917
	67.1°F (19.5°C)	65.0°F (18.3°C)	2.1°F (1.2°C)	9th Warmest	Warmest since: 1991	2010
	Ties: 1955, 2005
Mar–Oct 1998 8-Month	63.8°F (17.7°C)	61.8°F (16.6°C)	2.0°F (1.1°C)	118th Coolest	Coolest since: 1997	1917
Mar–Oct 1998 8-Month	63.8°F (17.7°C)	61.8°F (16.6°C)	2.0°F (1.1°C)	11th Warmest	Warmest since: 1991	2012
Feb–Oct 1998 9-Month	61.1°F (16.2°C)	58.2°F (14.6°C)	2.9°F (1.6°C)	124th Coolest	Coolest since: 1997	1917
Feb–Oct 1998 9-Month	61.1°F (16.2°C)	58.2°F (14.6°C)	2.9°F (1.6°C)	5th Warmest	Warmest since: 1991	2012
Jan–Oct 1998 10-Month	58.2°F (14.6°C)	54.9°F (12.7°C)	3.3°F (1.9°C)	126th Coolest	Coolest since: 1997	1904
Jan–Oct 1998 10-Month	58.2°F (14.6°C)	54.9°F (12.7°C)	3.3°F (1.9°C)	3rd Warmest	Warmest since: 1921	2012
Dec 1997–Oct 1998 11-Month	55.8°F (13.2°C)	52.6°F (11.4°C)	3.2°F (1.8°C)	124th Coolest	Coolest since: 1997	1904
Dec 1997–Oct 1998 11-Month	55.8°F (13.2°C)	52.6°F (11.4°C)	3.2°F (1.8°C)	4th Warmest	Warmest since: 1921	2012
Nov 1997–Oct 1998 12-Month	54.4°F (12.4°C)	51.6°F (10.9°C)	2.8°F (1.5°C)	123rd Coolest	Coolest since: 1997	1904
	54.4°F (12.4°C)	51.6°F (10.9°C)	2.8°F (1.5°C)	5th Warmest	Warmest since: 1921	2012
	Ties: 2002
May 1997–Oct 1998 18-Month	58.2°F (14.6°C)	56.8°F (13.8°C)	1.4°F (0.8°C)	108th Coolest	Coolest since: 1997	1904
	58.2°F (14.6°C)	56.8°F (13.8°C)	1.4°F (0.8°C)	20th Warmest	Warmest since: 1991	2012
	Ties: 1942, 1953, 1987, 2022
Nov 1996–Oct 1998 24-Month	52.5°F (11.4°C)	51.6°F (10.9°C)	0.9°F (0.5°C)	93rd Coolest	Coolest since: 1997	1905
	52.5°F (11.4°C)	51.6°F (10.9°C)	0.9°F (0.5°C)	34th Warmest	Warmest since: 1992	2017
	Ties: 1956
Nov 1995–Oct 1998 36-Month	51.6°F (10.9°C)	51.6°F (10.9°C)	0.0°F (0.0°C)	57th Coolest	Coolest since: 1997	1904, 1979
	51.6°F (10.9°C)	51.6°F (10.9°C)	0.0°F (0.0°C)	69th Warmest	Warmest since: 1995	2018
	Ties: 1910, 1911, 1953
Nov 1994–Oct 1998 48-Month	52.0°F (11.1°C)	51.6°F (10.9°C)	0.4°F (0.2°C)	76th Coolest	Coolest since: 1997	1905
	52.0°F (11.1°C)	51.6°F (10.9°C)	0.4°F (0.2°C)	49th Warmest	Warmest since: 1994	2019
	Ties: 1986, 1987, 1994
Nov 1993–Oct 1998 60-Month	51.8°F (11.0°C)	51.6°F (10.9°C)	0.2°F (0.1°C)	60th Coolest	Coolest since: 1997	1905, 1906
	51.8°F (11.0°C)	51.6°F (10.9°C)	0.2°F (0.1°C)	64th Warmest	Warmest since: 1995	2002, 2020
	Ties: 1947, 1953, 1959, 1976

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published May 2023, retrieved on May 29, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings