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 2. Northeast

Average Temperature Rankings, September 1986

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1986 1-Month	66.1°F (18.9°C)	63.7°F (17.6°C)	2.4°F (1.3°C)	97th Coolest	Coolest since: 1985	1918
September 1986 1-Month	66.1°F (18.9°C)	63.7°F (17.6°C)	2.4°F (1.3°C)	32nd Warmest	Warmest since: 1978	1897
Aug–Sep 1986 2-Month	67.0°F (19.4°C)	67.4°F (19.7°C)	-0.4°F (-0.3°C)	47th Coolest	Coolest since: 1985	1902
	67.0°F (19.4°C)	67.4°F (19.7°C)	-0.4°F (-0.3°C)	82nd Warmest	Warmest since: 1985	1947
	Ties: 1985
Jul–Sep 1986 3-Month	69.7°F (20.9°C)	69.3°F (20.7°C)	0.4°F (0.2°C)	68th Coolest	Coolest since: 1985	1924
Jul–Sep 1986 3-Month	69.7°F (20.9°C)	69.3°F (20.7°C)	0.4°F (0.2°C)	61st Warmest	Warmest since: 1983	1936
Jun–Sep 1986 4-Month	69.3°F (20.7°C)	69.2°F (20.7°C)	0.1°F (0.0°C)	55th Coolest	Coolest since: 1985	1915
	69.3°F (20.7°C)	69.2°F (20.7°C)	0.1°F (0.0°C)	74th Warmest	Warmest since: 1984	2005
	Ties: 1920, 1964, 1990, 2001
May–Sep 1986 5-Month	67.6°F (19.8°C)	67.1°F (19.5°C)	0.5°F (0.3°C)	74th Coolest	Coolest since: 1985	1924
	67.6°F (19.8°C)	67.1°F (19.5°C)	0.5°F (0.3°C)	55th Warmest	Warmest since: 1983	1921, 1988
	Ties: 1897, 1913
Apr–Sep 1986 6-Month	65.1°F (18.4°C)	63.9°F (17.7°C)	1.2°F (0.7°C)	97th Coolest	Coolest since: 1985	1907
	65.1°F (18.4°C)	63.9°F (17.7°C)	1.2°F (0.7°C)	32nd Warmest	Warmest since: 1977	1921
	Ties: 1901, 1939, 1964, 1970, 2006
Mar–Sep 1986 7-Month	61.5°F (16.4°C)	59.9°F (15.5°C)	1.6°F (0.9°C)	113th Coolest	Coolest since: 1985	1924
	61.5°F (16.4°C)	59.9°F (15.5°C)	1.6°F (0.9°C)	16th Warmest	Warmest since: 1977	2012
	Ties: 1925, 1933, 1934
Feb–Sep 1986 8-Month	56.9°F (13.8°C)	55.5°F (13.1°C)	1.4°F (0.7°C)	101st Coolest	Coolest since: 1985	1904, 1917
	56.9°F (13.8°C)	55.5°F (13.1°C)	1.4°F (0.7°C)	28th Warmest	Warmest since: 1983	2012
	Ties: 1919, 1959
Jan–Sep 1986 9-Month	53.1°F (11.7°C)	51.7°F (10.9°C)	1.4°F (0.8°C)	96th Coolest	Coolest since: 1985	1904, 1912
	53.1°F (11.7°C)	51.7°F (10.9°C)	1.4°F (0.8°C)	33rd Warmest	Warmest since: 1983	2012
	Ties: 1922, 1944, 1946
Dec 1985–Sep 1986 10-Month	49.5°F (9.7°C)	49.1°F (9.5°C)	0.4°F (0.2°C)	69th Coolest	Coolest since: 1984	1904
Dec 1985–Sep 1986 10-Month	49.5°F (9.7°C)	49.1°F (9.5°C)	0.4°F (0.2°C)	59th Warmest	Warmest since: 1985	2012
Nov 1985–Sep 1986 11-Month	48.4°F (9.1°C)	48.1°F (8.9°C)	0.3°F (0.2°C)	73rd Coolest	Coolest since: 1984	1904
	48.4°F (9.1°C)	48.1°F (8.9°C)	0.3°F (0.2°C)	55th Warmest	Warmest since: 1985	2012
	Ties: 1897, 1930, 1968, 2019
Oct 1985–Sep 1986 12-Month	48.8°F (9.3°C)	48.5°F (9.2°C)	0.3°F (0.1°C)	76th Coolest	Coolest since: 1984	1904
	48.8°F (9.3°C)	48.5°F (9.2°C)	0.3°F (0.1°C)	52nd Warmest	Warmest since: 1985	2012
	Ties: 1906, 2008
Apr 1985–Sep 1986 18-Month	54.2°F (12.3°C)	53.6°F (12.0°C)	0.6°F (0.3°C)	80th Coolest	Coolest since: 1985	1904
	54.2°F (12.3°C)	53.6°F (12.0°C)	0.6°F (0.3°C)	48th Warmest	Warmest since: 1983	2012
	Ties: 1897, 1949, 2019
Oct 1984–Sep 1986 24-Month	49.0°F (9.4°C)	48.5°F (9.2°C)	0.5°F (0.2°C)	85th Coolest	Coolest since: 1985	1918
	49.0°F (9.4°C)	48.5°F (9.2°C)	0.5°F (0.2°C)	42nd Warmest	Warmest since: 1984	2017
	Ties: 1901, 1935, 1974, 1989
Oct 1983–Sep 1986 36-Month	48.6°F (9.2°C)	48.4°F (9.1°C)	0.2°F (0.1°C)	68th Coolest	Coolest since: 1984	1979
	48.6°F (9.2°C)	48.4°F (9.1°C)	0.2°F (0.1°C)	58th Warmest	Warmest since: 1985	2000
	Ties: 1966, 1998
Oct 1982–Sep 1986 48-Month	49.2°F (9.6°C)	48.4°F (9.1°C)	0.8°F (0.5°C)	88th Coolest	Coolest since: 1985	1905, 1918
	49.2°F (9.6°C)	48.4°F (9.1°C)	0.8°F (0.5°C)	37th Warmest	Warmest since: 1957	2001, 2002, 2019
	Ties: 1923, 1924, 1987
Oct 1981–Sep 1986 60-Month	48.6°F (9.2°C)	48.4°F (9.1°C)	0.2°F (0.1°C)	69th Coolest	Coolest since: 1985	1905, 1906
	48.6°F (9.2°C)	48.4°F (9.1°C)	0.2°F (0.1°C)	55th Warmest	Warmest since: 1985	2002
	Ties: 1924, 1937, 1939, 1946, 1954, 1975, 1985

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2023, retrieved on March 24, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings