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 1971

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1971 1-Month	67.4°F (19.7°C)	63.7°F (17.6°C)	3.7°F (2.1°C)	113th Coolest	Coolest since: 1970	1918
	67.4°F (19.7°C)	63.7°F (17.6°C)	3.7°F (2.1°C)	16th Warmest	Warmest since: 1939	1897
	Ties: 1906
Aug–Sep 1971 2-Month	68.6°F (20.3°C)	67.4°F (19.7°C)	1.2°F (0.6°C)	89th Coolest	Coolest since: 1970	1902
	68.6°F (20.3°C)	67.4°F (19.7°C)	1.2°F (0.6°C)	40th Warmest	Warmest since: 1961	1947
	Ties: 1898, 1919
Jul–Sep 1971 3-Month	69.1°F (20.6°C)	69.3°F (20.7°C)	-0.2°F (-0.1°C)	49th Coolest	Coolest since: 1967	1924
	69.1°F (20.6°C)	69.3°F (20.7°C)	-0.2°F (-0.1°C)	80th Warmest	Warmest since: 1970	1936
	Ties: 1905, 1943, 1984, 2000
Jun–Sep 1971 4-Month	70.1°F (21.2°C)	69.1°F (20.6°C)	1.0°F (0.6°C)	87th Coolest	Coolest since: 1970	1915
	70.1°F (21.2°C)	69.1°F (20.6°C)	1.0°F (0.6°C)	42nd Warmest	Warmest since: 1959	2005
	Ties: 1922, 1930, 1999
May–Sep 1971 5-Month	67.4°F (19.7°C)	67.1°F (19.5°C)	0.3°F (0.2°C)	67th Coolest	Coolest since: 1969	1924
	67.4°F (19.7°C)	67.1°F (19.5°C)	0.3°F (0.2°C)	62nd Warmest	Warmest since: 1970	1921, 1988
	Ties: 1908, 1937, 2006
Apr–Sep 1971 6-Month	64.2°F (17.9°C)	63.9°F (17.7°C)	0.3°F (0.2°C)	64th Coolest	Coolest since: 1969	1907
	64.2°F (17.9°C)	63.9°F (17.7°C)	0.3°F (0.2°C)	65th Warmest	Warmest since: 1970	1921
	Ties: 1908, 1938, 1973
Mar–Sep 1971 7-Month	59.7°F (15.4°C)	59.9°F (15.5°C)	-0.2°F (-0.1°C)	49th Coolest	Coolest since: 1969	1924
	59.7°F (15.4°C)	59.9°F (15.5°C)	-0.2°F (-0.1°C)	80th Warmest	Warmest since: 1970	2012
	Ties: 1906, 1918, 1945, 2003
Feb–Sep 1971 8-Month	55.4°F (13.0°C)	55.5°F (13.1°C)	-0.1°F (-0.1°C)	57th Coolest	Coolest since: 1969	1904, 1917
	55.4°F (13.0°C)	55.5°F (13.1°C)	-0.1°F (-0.1°C)	72nd Warmest	Warmest since: 1970	2012
	Ties: 1936, 1956, 1994, 2009
Jan–Sep 1971 9-Month	51.1°F (10.6°C)	51.8°F (11.0°C)	-0.7°F (-0.4°C)	41st Coolest	Coolest since: 1969	1904, 1912
Jan–Sep 1971 9-Month	51.1°F (10.6°C)	51.8°F (11.0°C)	-0.7°F (-0.4°C)	88th Warmest	Warmest since: 1970	2012
Dec 1970–Sep 1971 10-Month	48.8°F (9.3°C)	49.2°F (9.6°C)	-0.4°F (-0.3°C)	44th Coolest	Coolest since: 1970	1904
	48.8°F (9.3°C)	49.2°F (9.6°C)	-0.4°F (-0.3°C)	84th Warmest	Warmest since: 1968	2012
	Ties: 1909, 1960, 1974
Nov 1970–Sep 1971 11-Month	47.8°F (8.8°C)	48.2°F (9.0°C)	-0.4°F (-0.2°C)	46th Coolest	Coolest since: 1970	1904
	47.8°F (8.8°C)	48.2°F (9.0°C)	-0.4°F (-0.2°C)	82nd Warmest	Warmest since: 1968	2012
	Ties: 1937, 1947
Oct 1970–Sep 1971 12-Month	48.2°F (9.0°C)	48.4°F (9.1°C)	-0.2°F (-0.1°C)	45th Coolest	Coolest since: 1970	1904
	48.2°F (9.0°C)	48.4°F (9.1°C)	-0.2°F (-0.1°C)	83rd Warmest	Warmest since: 1968	2012
	Ties: 1909, 1923, 1928, 1993
Apr 1970–Sep 1971 18-Month	53.8°F (12.1°C)	53.6°F (12.0°C)	0.2°F (0.1°C)	64th Coolest	Coolest since: 1970	1904
	53.8°F (12.1°C)	53.6°F (12.0°C)	0.2°F (0.1°C)	64th Warmest	Warmest since: 1964	2012
	Ties: 1973, 1990, 2001, 2003
Oct 1969–Sep 1971 24-Month	47.9°F (8.8°C)	48.4°F (9.1°C)	-0.5°F (-0.3°C)	25th Coolest	Coolest since: 1970	1918
	47.9°F (8.8°C)	48.4°F (9.1°C)	-0.5°F (-0.3°C)	102nd Warmest	Warmest since: 1969	2017
	Ties: 1906, 1908, 1928, 1929, 1961, 1962
Oct 1968–Sep 1971 36-Month	47.9°F (8.8°C)	48.4°F (9.1°C)	-0.5°F (-0.3°C)	25th Coolest	Coolest since: 1967	1979
	47.9°F (8.8°C)	48.4°F (9.1°C)	-0.5°F (-0.3°C)	101st Warmest	Warmest since: 1970	2000
	Ties: 1914, 1978, 1982
Oct 1967–Sep 1971 48-Month	48.1°F (8.9°C)	48.4°F (9.1°C)	-0.3°F (-0.2°C)	33rd Coolest	Coolest since: 1970	1905, 1918
	48.1°F (8.9°C)	48.4°F (9.1°C)	-0.3°F (-0.2°C)	92nd Warmest	Warmest since: 1969	2001, 2002, 2019
	Ties: 1953, 1960, 1969, 1972, 1997
Oct 1966–Sep 1971 60-Month	48.0°F (8.9°C)	48.4°F (9.1°C)	-0.4°F (-0.2°C)	24th Coolest	Coolest since: 1970	1905, 1906
	48.0°F (8.9°C)	48.4°F (9.1°C)	-0.4°F (-0.2°C)	100th Warmest	Warmest since: 1970	2002
	Ties: 1903, 1909, 1915, 1951, 1952, 1964, 1969, 1970

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published February 2023, retrieved on February 8, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings