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, August 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
August 1998 1-Month	74.0°F (23.3°C)	72.1°F (22.3°C)	1.9°F (1.0°C)	107th Coolest	Coolest since: 1997	1915
	74.0°F (23.3°C)	72.1°F (22.3°C)	1.9°F (1.0°C)	22nd Warmest	Warmest since: 1995	1947
	Ties: 1899, 1930, 1991, 2018
Jul–Aug 1998 2-Month	74.0°F (23.3°C)	73.3°F (22.9°C)	0.7°F (0.4°C)	86th Coolest	Coolest since: 1997	1915
	74.0°F (23.3°C)	73.3°F (22.9°C)	0.7°F (0.4°C)	43rd Warmest	Warmest since: 1995	1936
	Ties: 1952, 1957
Jun–Aug 1998 3-Month	72.9°F (22.7°C)	72.3°F (22.4°C)	0.6°F (0.3°C)	85th Coolest	Coolest since: 1997	1915
	72.9°F (22.7°C)	72.3°F (22.4°C)	0.6°F (0.3°C)	44th Warmest	Warmest since: 1995	1936
	Ties: 1900, 1941, 1993, 2022
May–Aug 1998 4-Month	71.4°F (21.9°C)	69.5°F (20.8°C)	1.9°F (1.1°C)	110th Coolest	Coolest since: 1997	1915
	71.4°F (21.9°C)	69.5°F (20.8°C)	1.9°F (1.1°C)	19th Warmest	Warmest since: 1995	1934
	Ties: 1953, 1980, 2011
Apr–Aug 1998 5-Month	67.5°F (19.7°C)	65.5°F (18.6°C)	2.0°F (1.1°C)	114th Coolest	Coolest since: 1997	1907
	67.5°F (19.7°C)	65.5°F (18.6°C)	2.0°F (1.1°C)	15th Warmest	Warmest since: 1991	1991
	Ties: 1941, 2001
Mar–Aug 1998 6-Month	62.8°F (17.1°C)	61.0°F (16.1°C)	1.8°F (1.0°C)	114th Coolest	Coolest since: 1997	1904
	62.8°F (17.1°C)	61.0°F (16.1°C)	1.8°F (1.0°C)	15th Warmest	Warmest since: 1995	2012
	Ties: 1959, 1995, 2011
Feb–Aug 1998 7-Month	59.4°F (15.2°C)	56.2°F (13.4°C)	3.2°F (1.8°C)	124th Coolest	Coolest since: 1997	1904
Feb–Aug 1998 7-Month	59.4°F (15.2°C)	56.2°F (13.4°C)	3.2°F (1.8°C)	5th Warmest	Warmest since: 1991	2012
Jan–Aug 1998 8-Month	55.9°F (13.3°C)	52.2°F (11.2°C)	3.7°F (2.1°C)	126th Coolest	Coolest since: 1997	1904, 1912
Jan–Aug 1998 8-Month	55.9°F (13.3°C)	52.2°F (11.2°C)	3.7°F (2.1°C)	3rd Warmest	Warmest since: 1921	2012
Dec 1997–Aug 1998 9-Month	53.2°F (11.8°C)	49.5°F (9.7°C)	3.7°F (2.1°C)	124th Coolest	Coolest since: 1997	1904
Dec 1997–Aug 1998 9-Month	53.2°F (11.8°C)	49.5°F (9.7°C)	3.7°F (2.1°C)	4th Warmest	Warmest since: 1921	2012
Nov 1997–Aug 1998 10-Month	51.6°F (10.9°C)	48.5°F (9.2°C)	3.1°F (1.7°C)	120th Coolest	Coolest since: 1997	1904
Nov 1997–Aug 1998 10-Month	51.6°F (10.9°C)	48.5°F (9.2°C)	3.1°F (1.7°C)	8th Warmest	Warmest since: 1991	2012
Oct 1997–Aug 1998 11-Month	51.8°F (11.0°C)	49.0°F (9.4°C)	2.8°F (1.6°C)	120th Coolest	Coolest since: 1997	1904
Oct 1997–Aug 1998 11-Month	51.8°F (11.0°C)	49.0°F (9.4°C)	2.8°F (1.6°C)	8th Warmest	Warmest since: 1991	2012
Sep 1997–Aug 1998 12-Month	52.9°F (11.6°C)	50.3°F (10.2°C)	2.6°F (1.4°C)	119th Coolest	Coolest since: 1997	1904
	52.9°F (11.6°C)	50.3°F (10.2°C)	2.6°F (1.4°C)	9th Warmest	Warmest since: 1991	2012
	Ties: 2002
Mar 1997–Aug 1998 18-Month	55.1°F (12.8°C)	53.9°F (12.2°C)	1.2°F (0.6°C)	99th Coolest	Coolest since: 1997	1904
	55.1°F (12.8°C)	53.9°F (12.2°C)	1.2°F (0.6°C)	29th Warmest	Warmest since: 1995	2012
	Ties: 1931, 2020
Sep 1996–Aug 1998 24-Month	51.0°F (10.6°C)	50.3°F (10.2°C)	0.7°F (0.4°C)	88th Coolest	Coolest since: 1997	1905
	51.0°F (10.6°C)	50.3°F (10.2°C)	0.7°F (0.4°C)	39th Warmest	Warmest since: 1992	2017
	Ties: 1931, 1943, 1950, 1973, 1986, 1989
Sep 1995–Aug 1998 36-Month	50.3°F (10.2°C)	50.3°F (10.2°C)	0.0°F (0.0°C)	59th Coolest	Coolest since: 1997	1904
	50.3°F (10.2°C)	50.3°F (10.2°C)	0.0°F (0.0°C)	67th Warmest	Warmest since: 1995	2018
	Ties: 1946, 1947, 1953, 1959
Sep 1994–Aug 1998 48-Month	50.8°F (10.4°C)	50.3°F (10.2°C)	0.5°F (0.2°C)	75th Coolest	Coolest since: 1997	1905
	50.8°F (10.4°C)	50.3°F (10.2°C)	0.5°F (0.2°C)	50th Warmest	Warmest since: 1995	2019
	Ties: 1936, 1950, 1974, 1995
Sep 1993–Aug 1998 60-Month	50.5°F (10.3°C)	50.3°F (10.2°C)	0.2°F (0.1°C)	59th Coolest	Coolest since: 1997	1906
	50.5°F (10.3°C)	50.3°F (10.2°C)	0.2°F (0.1°C)	65th Warmest	Warmest since: 1995	2020
	Ties: 1974, 1977

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published May 2023, retrieved on June 5, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings