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 1947

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1947 1-Month	65.5°F (18.6°C)	63.7°F (17.6°C)	1.8°F (1.0°C)	89th Coolest	Coolest since: 1946	1918
September 1947 1-Month	65.5°F (18.6°C)	63.7°F (17.6°C)	1.8°F (1.0°C)	40th Warmest	Warmest since: 1941	1897
Aug–Sep 1947 2-Month	72.1°F (22.3°C)	67.4°F (19.7°C)	4.7°F (2.6°C)	128th Coolest	Coolest since: 1946	1902
Aug–Sep 1947 2-Month	72.1°F (22.3°C)	67.4°F (19.7°C)	4.7°F (2.6°C)	1st Warmest	Warmest to Date	1947
Jul–Sep 1947 3-Month	71.5°F (21.9°C)	69.3°F (20.7°C)	2.2°F (1.2°C)	113th Coolest	Coolest since: 1946	1924
	71.5°F (21.9°C)	69.3°F (20.7°C)	2.2°F (1.2°C)	16th Warmest	Warmest since: 1936	1936
	Ties: 1998, 2012
Jun–Sep 1947 4-Month	70.0°F (21.1°C)	69.1°F (20.6°C)	0.9°F (0.5°C)	83rd Coolest	Coolest since: 1946	1915
	70.0°F (21.1°C)	69.1°F (20.6°C)	0.9°F (0.5°C)	46th Warmest	Warmest since: 1944	2005
	Ties: 1899, 1906, 1980
May–Sep 1947 5-Month	66.8°F (19.3°C)	67.1°F (19.5°C)	-0.3°F (-0.2°C)	49th Coolest	Coolest since: 1946	1924
	66.8°F (19.3°C)	67.1°F (19.5°C)	-0.3°F (-0.2°C)	80th Warmest	Warmest since: 1944	1921, 1988
	Ties: 1968, 1994
Apr–Sep 1947 6-Month	63.4°F (17.4°C)	63.8°F (17.7°C)	-0.4°F (-0.3°C)	34th Coolest	Coolest since: 1945	1907
	63.4°F (17.4°C)	63.8°F (17.7°C)	-0.4°F (-0.3°C)	95th Warmest	Warmest since: 1946	1921
	Ties: 1910, 1912, 1975, 1976
Mar–Sep 1947 7-Month	58.8°F (14.9°C)	59.9°F (15.5°C)	-1.1°F (-0.6°C)	22nd Coolest	Coolest since: 1940	1924
	58.8°F (14.9°C)	59.9°F (15.5°C)	-1.1°F (-0.6°C)	107th Warmest	Warmest since: 1946	2012
	Ties: 1902, 1923
Feb–Sep 1947 8-Month	53.7°F (12.1°C)	55.5°F (13.1°C)	-1.8°F (-1.0°C)	13th Coolest	Coolest since: 1926	1904, 1917
	53.7°F (12.1°C)	55.5°F (13.1°C)	-1.8°F (-1.0°C)	116th Warmest	Warmest since: 1946	2012
	Ties: 1951
Jan–Sep 1947 9-Month	50.6°F (10.3°C)	51.7°F (10.9°C)	-1.1°F (-0.6°C)	27th Coolest	Coolest since: 1940	1904, 1912
	50.6°F (10.3°C)	51.7°F (10.9°C)	-1.1°F (-0.6°C)	102nd Warmest	Warmest since: 1946	2012
	Ties: 1960, 1965, 1966
Dec 1946–Sep 1947 10-Month	48.6°F (9.2°C)	49.2°F (9.6°C)	-0.6°F (-0.4°C)	39th Coolest	Coolest since: 1945	1904
	48.6°F (9.2°C)	49.2°F (9.6°C)	-0.6°F (-0.4°C)	89th Warmest	Warmest since: 1946	2012
	Ties: 1916, 1935, 1970, 1994
Nov 1946–Sep 1947 11-Month	47.8°F (8.8°C)	48.2°F (9.0°C)	-0.4°F (-0.2°C)	46th Coolest	Coolest since: 1945	1904
	47.8°F (8.8°C)	48.2°F (9.0°C)	-0.4°F (-0.2°C)	82nd Warmest	Warmest since: 1946	2012
	Ties: 1937, 1971
Oct 1946–Sep 1947 12-Month	48.5°F (9.2°C)	48.5°F (9.2°C)	0.0°F (0.0°C)	56th Coolest	Coolest since: 1945	1904
	48.5°F (9.2°C)	48.5°F (9.2°C)	0.0°F (0.0°C)	72nd Warmest	Warmest since: 1946	2012
	Ties: 1930, 1935, 1952, 1972, 1975
Apr 1946–Sep 1947 18-Month	53.5°F (11.9°C)	53.6°F (12.0°C)	-0.1°F (-0.1°C)	52nd Coolest	Coolest since: 1946	1904
	53.5°F (11.9°C)	53.6°F (12.0°C)	-0.1°F (-0.1°C)	76th Warmest	Warmest since: 1945	2012
	Ties: 1909, 1966, 1980
Oct 1945–Sep 1947 24-Month	48.6°F (9.2°C)	48.4°F (9.1°C)	0.2°F (0.1°C)	71st Coolest	Coolest since: 1946	1918
	48.6°F (9.2°C)	48.4°F (9.1°C)	0.2°F (0.1°C)	56th Warmest	Warmest since: 1943	2017
	Ties: 1911, 1941, 1943, 1975, 1981, 1996
Oct 1944–Sep 1947 36-Month	48.3°F (9.1°C)	48.4°F (9.1°C)	-0.1°F (0.0°C)	51st Coolest	Coolest since: 1945	1979
	48.3°F (9.1°C)	48.4°F (9.1°C)	-0.1°F (0.0°C)	75th Warmest	Warmest since: 1946	2000
	Ties: 1901, 1910, 1916
Oct 1943–Sep 1947 48-Month	48.5°F (9.2°C)	48.4°F (9.1°C)	0.1°F (0.1°C)	54th Coolest	Coolest since: 1946	1905, 1918
	48.5°F (9.2°C)	48.4°F (9.1°C)	0.1°F (0.1°C)	71st Warmest	Warmest since: 1945	2001, 2002, 2019
	Ties: 1900, 1911, 1916, 1945, 1950, 1984
Oct 1942–Sep 1947 60-Month	48.3°F (9.1°C)	48.4°F (9.1°C)	-0.1°F (0.0°C)	47th Coolest	Coolest since: 1930	1905, 1906
	48.3°F (9.1°C)	48.4°F (9.1°C)	-0.1°F (0.0°C)	77th Warmest	Warmest since: 1946	2002
	Ties: 1953, 1973

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on February 6, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings