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 1899

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1899 1-Month	62.5°F (16.9°C)	63.7°F (17.6°C)	-1.2°F (-0.7°C)	35th Coolest	Coolest since: 1896	1918
	62.5°F (16.9°C)	63.7°F (17.6°C)	-1.2°F (-0.7°C)	94th Warmest	Warmest since: 1898	1897
	Ties: 1950, 1982
Aug–Sep 1899 2-Month	68.0°F (20.0°C)	67.4°F (19.7°C)	0.6°F (0.3°C)	74th Coolest	Coolest since: 1896	1902
	68.0°F (20.0°C)	67.4°F (19.7°C)	0.6°F (0.3°C)	55th Warmest	Warmest since: 1898	1947
	Ties: 1916, 1984
Jul–Sep 1899 3-Month	69.8°F (21.0°C)	69.4°F (20.8°C)	0.4°F (0.2°C)	71st Coolest	Coolest since: 1896	1924
	69.8°F (21.0°C)	69.4°F (20.8°C)	0.4°F (0.2°C)	58th Warmest	Warmest since: 1898	1936
	Ties: 1961, 2001
Jun–Sep 1899 4-Month	70.0°F (21.1°C)	69.2°F (20.7°C)	0.8°F (0.4°C)	83rd Coolest	Coolest since: 1896	1915
	70.0°F (21.1°C)	69.2°F (20.7°C)	0.8°F (0.4°C)	46th Warmest	Warmest since: 1898	2005
	Ties: 1906, 1947, 1980
May–Sep 1899 5-Month	68.1°F (20.1°C)	67.2°F (19.6°C)	0.9°F (0.5°C)	90th Coolest	Coolest since: 1898	1924
	68.1°F (20.1°C)	67.2°F (19.6°C)	0.9°F (0.5°C)	39th Warmest	Warmest since: 1898	1921, 1988
	Ties: 1898, 1930, 1970, 2011, 2019
Apr–Sep 1899 6-Month	65.2°F (18.4°C)	63.9°F (17.7°C)	1.3°F (0.7°C)	100th Coolest	Coolest since: 1898	1907
	65.2°F (18.4°C)	63.9°F (17.7°C)	1.3°F (0.7°C)	29th Warmest	Warmest since: 1896	1921
	Ties: 1911, 1944
Mar–Sep 1899 7-Month	60.0°F (15.6°C)	59.9°F (15.5°C)	0.1°F (0.1°C)	58th Coolest	Coolest since: 1897	1924
	60.0°F (15.6°C)	59.9°F (15.5°C)	0.1°F (0.1°C)	71st Warmest	Warmest since: 1898	2012
	Ties: 1980
Feb–Sep 1899 8-Month	54.6°F (12.6°C)	55.5°F (13.1°C)	-0.9°F (-0.5°C)	30th Coolest	Coolest since: 1899	1904, 1917
	54.6°F (12.6°C)	55.5°F (13.1°C)	-0.9°F (-0.5°C)	99th Warmest	Warmest since: 1898	2012
	Ties: 1916, 1975, 1993
Jan–Sep 1899 9-Month	50.9°F (10.5°C)	51.7°F (10.9°C)	-0.8°F (-0.4°C)	33rd Coolest	Coolest since: 1895	1904, 1912
	50.9°F (10.5°C)	51.7°F (10.9°C)	-0.8°F (-0.4°C)	96th Warmest	Warmest since: 1898	2012
	Ties: 1928, 1936, 1994, 2009
Dec 1898–Sep 1899 10-Month	48.0°F (8.9°C)	49.1°F (9.5°C)	-1.1°F (-0.6°C)	23rd Coolest	Coolest since: 1899	1904
	48.0°F (8.9°C)	49.1°F (9.5°C)	-1.1°F (-0.6°C)	105th Warmest	Warmest since: 1898	2012
	Ties: 1936, 1940, 1943, 1950, 1965, 2009
Nov 1898–Sep 1899 11-Month	46.7°F (8.2°C)	48.1°F (8.9°C)	-1.4°F (-0.7°C)	18th Coolest	Coolest since: 1899	1904
Nov 1898–Sep 1899 11-Month	46.7°F (8.2°C)	48.1°F (8.9°C)	-1.4°F (-0.7°C)	110th Warmest	Warmest since: 1898	2012
Oct 1898–Sep 1899 12-Month	47.0°F (8.3°C)	48.5°F (9.2°C)	-1.5°F (-0.9°C)	15th Coolest	Coolest since: 1899	1904
	47.0°F (8.3°C)	48.5°F (9.2°C)	-1.5°F (-0.9°C)	113th Warmest	Warmest since: 1898	2012
	Ties: 1905
Apr 1898–Sep 1899 18-Month	52.8°F (11.6°C)	53.6°F (12.0°C)	-0.8°F (-0.4°C)	23rd Coolest	Coolest since: 1899	1904
	52.8°F (11.6°C)	53.6°F (12.0°C)	-0.8°F (-0.4°C)	105th Warmest	Warmest since: 1898	2012
	Ties: 1916, 1958, 1963, 1996
Oct 1897–Sep 1899 24-Month	48.2°F (9.0°C)	48.5°F (9.2°C)	-0.3°F (-0.2°C)	44th Coolest	Coolest since: 1899	1918
	48.2°F (9.0°C)	48.5°F (9.2°C)	-0.3°F (-0.2°C)	83rd Warmest	Warmest since: 1898	2017
	Ties: 1919, 1958, 2009
Oct 1896–Sep 1899 36-Month	48.2°F (9.0°C)	48.4°F (9.1°C)	-0.2°F (-0.1°C)	41st Coolest	Coolest since: 1899	1979
	48.2°F (9.0°C)	48.4°F (9.1°C)	-0.2°F (-0.1°C)	85th Warmest	Warmest since: 1898	2000
	Ties: 1902, 1908, 1938, 1958, 1961, 1965, 1968, 1994, 1997
Oct 1895–Sep 1899 48-Month	48.3°F (9.1°C)	48.4°F (9.1°C)	-0.1°F (0.0°C)	43rd Coolest	Coolest since: 1899	1905, 1918
	48.3°F (9.1°C)	48.4°F (9.1°C)	-0.1°F (0.0°C)	82nd Warmest	Warmest to Date	2001, 2002, 2019
	Ties: 1903, 1937, 1946, 1948, 1959, 1966, 1967, 1996

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published November 2022, retrieved on November 26, 2022 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings