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 1901

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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
September 1901 1-Month	63.0°F (17.2°C)	63.7°F (17.6°C)	-0.7°F (-0.4°C)	46th Coolest	Coolest since: 1899	1918
	63.0°F (17.2°C)	63.7°F (17.6°C)	-0.7°F (-0.4°C)	83rd Warmest	Warmest since: 1900	1897
	Ties: 1904, 1956, 1996
Aug–Sep 1901 2-Month	67.3°F (19.6°C)	67.4°F (19.7°C)	-0.1°F (-0.1°C)	54th Coolest	Coolest since: 1896	1902
	67.3°F (19.6°C)	67.4°F (19.7°C)	-0.1°F (-0.1°C)	75th Warmest	Warmest since: 1900	1947
	Ties: 1909, 1979, 1996
Jul–Sep 1901 3-Month	71.3°F (21.8°C)	69.3°F (20.7°C)	2.0°F (1.1°C)	109th Coolest	Coolest since: 1899	1924
	71.3°F (21.8°C)	69.3°F (20.7°C)	2.0°F (1.1°C)	20th Warmest	Warmest since: 1900	1936
	Ties: 1897, 1959
Jun–Sep 1901 4-Month	71.4°F (21.9°C)	69.2°F (20.7°C)	2.2°F (1.2°C)	114th Coolest	Coolest since: 1900	1915
	71.4°F (21.9°C)	69.2°F (20.7°C)	2.2°F (1.2°C)	15th Warmest	Warmest to Date	2005
	Ties: 1934
May–Sep 1901 5-Month	68.7°F (20.4°C)	67.1°F (19.5°C)	1.6°F (0.9°C)	103rd Coolest	Coolest since: 1899	1924
	68.7°F (20.4°C)	67.1°F (19.5°C)	1.6°F (0.9°C)	26th Warmest	Warmest since: 1900	1921, 1988
	Ties: 1995, 2022
Apr–Sep 1901 6-Month	65.1°F (18.4°C)	63.9°F (17.7°C)	1.2°F (0.7°C)	97th Coolest	Coolest since: 1898	1907
	65.1°F (18.4°C)	63.9°F (17.7°C)	1.2°F (0.7°C)	32nd Warmest	Warmest since: 1900	1921
	Ties: 1939, 1964, 1970, 1986, 2006
Mar–Sep 1901 7-Month	60.6°F (15.9°C)	59.9°F (15.5°C)	0.7°F (0.4°C)	78th Coolest	Coolest since: 1900	1924
Mar–Sep 1901 7-Month	60.6°F (15.9°C)	59.9°F (15.5°C)	0.7°F (0.4°C)	51st Warmest	Warmest since: 1898	2012
Feb–Sep 1901 8-Month	54.7°F (12.6°C)	55.5°F (13.1°C)	-0.8°F (-0.5°C)	33rd Coolest	Coolest since: 1899	1904, 1917
	54.7°F (12.6°C)	55.5°F (13.1°C)	-0.8°F (-0.5°C)	96th Warmest	Warmest since: 1900	2012
	Ties: 1975
Jan–Sep 1901 9-Month	51.2°F (10.7°C)	51.7°F (10.9°C)	-0.5°F (-0.2°C)	42nd Coolest	Coolest since: 1899	1904, 1912
	51.2°F (10.7°C)	51.7°F (10.9°C)	-0.5°F (-0.2°C)	87th Warmest	Warmest since: 1900	2012
	Ties: 1903, 1909, 1945, 1948, 1970, 2003
Dec 1900–Sep 1901 10-Month	49.0°F (9.4°C)	49.1°F (9.5°C)	-0.1°F (-0.1°C)	55th Coolest	Coolest since: 1899	1904
	49.0°F (9.4°C)	49.1°F (9.5°C)	-0.1°F (-0.1°C)	73rd Warmest	Warmest since: 1900	2012
	Ties: 1956, 1989, 1993, 2001, 2003, 2011
Nov 1900–Sep 1901 11-Month	47.7°F (8.7°C)	48.1°F (8.9°C)	-0.4°F (-0.2°C)	45th Coolest	Coolest since: 1899	1904
Nov 1900–Sep 1901 11-Month	47.7°F (8.7°C)	48.1°F (8.9°C)	-0.4°F (-0.2°C)	83rd Warmest	Warmest since: 1900	2012
Oct 1900–Sep 1901 12-Month	48.7°F (9.3°C)	48.5°F (9.2°C)	0.2°F (0.1°C)	73rd Coolest	Coolest since: 1899	1904
	48.7°F (9.3°C)	48.5°F (9.2°C)	0.2°F (0.1°C)	55th Warmest	Warmest since: 1900	2012
	Ties: 1908, 1946, 1959, 1974, 1981
Apr 1900–Sep 1901 18-Month	54.3°F (12.4°C)	53.6°F (12.0°C)	0.7°F (0.4°C)	86th Coolest	Coolest since: 1899	1904
	54.3°F (12.4°C)	53.6°F (12.0°C)	0.7°F (0.4°C)	42nd Warmest	Warmest since: 1900	2012
	Ties: 1896, 1898, 1956, 1989, 2004
Oct 1899–Sep 1901 24-Month	49.0°F (9.4°C)	48.5°F (9.2°C)	0.5°F (0.2°C)	85th Coolest	Coolest since: 1900	1918
	49.0°F (9.4°C)	48.5°F (9.2°C)	0.5°F (0.2°C)	42nd Warmest	Warmest to Date	2017
	Ties: 1935, 1974, 1986, 1989
Oct 1898–Sep 1901 36-Month	48.3°F (9.1°C)	48.4°F (9.1°C)	-0.1°F (0.0°C)	51st Coolest	Coolest since: 1899	1979
	48.3°F (9.1°C)	48.4°F (9.1°C)	-0.1°F (0.0°C)	75th Warmest	Warmest since: 1900	2000
	Ties: 1910, 1916, 1947
Oct 1897–Sep 1901 48-Month	48.6°F (9.2°C)	48.4°F (9.1°C)	0.2°F (0.1°C)	61st Coolest	Coolest since: 1900	1905, 1918
	48.6°F (9.2°C)	48.4°F (9.1°C)	0.2°F (0.1°C)	64th Warmest	Warmest to Date	2001, 2002, 2019
	Ties: 1931, 1943, 1977, 1985
Oct 1896–Sep 1901 60-Month	48.5°F (9.2°C)	48.4°F (9.1°C)	0.1°F (0.1°C)	53rd Coolest	Coolest since: 1900	1905, 1906
	48.5°F (9.2°C)	48.4°F (9.1°C)	0.1°F (0.1°C)	71st Warmest	Warmest since: 1900	2002
	Ties: 1900, 1938, 1940, 1948, 1949, 1950, 1974, 1984

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2023, retrieved on March 21, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings