Statewide 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

Average Temperature Rankings, September 1906

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1906 1-Month	69.7°F (20.9°C)	66.2°F (19.0°C)	3.5°F (1.9°C)	111th Coolest	Coolest since: 1905	1918
September 1906 1-Month	69.7°F (20.9°C)	66.2°F (19.0°C)	3.5°F (1.9°C)	18th Warmest	Warmest since: 1897	1925, 1933
Aug–Sep 1906 2-Month	72.6°F (22.6°C)	69.9°F (21.1°C)	2.7°F (1.5°C)	117th Coolest	Coolest since: 1905	1967
	72.6°F (22.6°C)	69.9°F (21.1°C)	2.7°F (1.5°C)	12th Warmest	Warmest since: 1900	1936
	Ties: 2021
Jul–Sep 1906 3-Month	72.8°F (22.7°C)	71.8°F (22.1°C)	1.0°F (0.6°C)	92nd Coolest	Coolest since: 1905	1967
	72.8°F (22.7°C)	71.8°F (22.1°C)	1.0°F (0.6°C)	37th Warmest	Warmest since: 1901	1936
	Ties: 1995, 2011
Jun–Sep 1906 4-Month	72.0°F (22.2°C)	71.6°F (22.0°C)	0.4°F (0.2°C)	76th Coolest	Coolest since: 1905	1915, 1924
	72.0°F (22.2°C)	71.6°F (22.0°C)	0.4°F (0.2°C)	53rd Warmest	Warmest since: 1901	1936
	Ties: 1937, 1940, 1948, 2015, 2017
May–Sep 1906 5-Month	70.3°F (21.3°C)	69.8°F (21.0°C)	0.5°F (0.3°C)	80th Coolest	Coolest since: 1905	1924
	70.3°F (21.3°C)	69.8°F (21.0°C)	0.5°F (0.3°C)	49th Warmest	Warmest since: 1901	1936
	Ties: 1896, 1898
Apr–Sep 1906 6-Month	67.6°F (19.8°C)	66.7°F (19.3°C)	0.9°F (0.5°C)	84th Coolest	Coolest since: 1905	1907
	67.6°F (19.8°C)	66.7°F (19.3°C)	0.9°F (0.5°C)	45th Warmest	Warmest since: 1900	2010
	Ties: 1938, 1939, 1970
Mar–Sep 1906 7-Month	62.2°F (16.8°C)	62.8°F (17.1°C)	-0.6°F (-0.3°C)	36th Coolest	Coolest since: 1904	1924
	62.2°F (16.8°C)	62.8°F (17.1°C)	-0.6°F (-0.3°C)	93rd Warmest	Warmest since: 1905	2012
	Ties: 1943, 1974
Feb–Sep 1906 8-Month	57.9°F (14.4°C)	58.7°F (14.8°C)	-0.8°F (-0.4°C)	35th Coolest	Coolest since: 1905	1904
	57.9°F (14.4°C)	58.7°F (14.8°C)	-0.8°F (-0.4°C)	94th Warmest	Warmest since: 1903	2012
	Ties: 1969
Jan–Sep 1906 9-Month	54.9°F (12.7°C)	55.0°F (12.8°C)	-0.1°F (-0.1°C)	63rd Coolest	Coolest since: 1905	1904, 1912
	54.9°F (12.7°C)	55.0°F (12.8°C)	-0.1°F (-0.1°C)	66th Warmest	Warmest since: 1900	2012
	Ties: 1900
Dec 1905–Sep 1906 10-Month	52.4°F (11.3°C)	52.4°F (11.3°C)	0.0°F (0.0°C)	58th Coolest	Coolest since: 1905	1904
	52.4°F (11.3°C)	52.4°F (11.3°C)	0.0°F (0.0°C)	70th Warmest	Warmest since: 1901	2012
	Ties: 1901, 1935, 1956, 1959, 1964, 1972
Nov 1905–Sep 1906 11-Month	51.3°F (10.7°C)	51.3°F (10.7°C)	0.0°F (0.0°C)	60th Coolest	Coolest since: 1905	1904
	51.3°F (10.7°C)	51.3°F (10.7°C)	0.0°F (0.0°C)	68th Warmest	Warmest since: 1900	2012
	Ties: 1974
Oct 1905–Sep 1906 12-Month	51.4°F (10.8°C)	51.6°F (10.9°C)	-0.2°F (-0.1°C)	51st Coolest	Coolest since: 1905	1904
	51.4°F (10.8°C)	51.6°F (10.9°C)	-0.2°F (-0.1°C)	77th Warmest	Warmest since: 1903	2012
	Ties: 1943, 1950, 1966
Apr 1905–Sep 1906 18-Month	56.5°F (13.6°C)	56.7°F (13.7°C)	-0.2°F (-0.1°C)	48th Coolest	Coolest since: 1905	1904, 1918
	56.5°F (13.6°C)	56.7°F (13.7°C)	-0.2°F (-0.1°C)	80th Warmest	Warmest since: 1901	2012
	Ties: 1947, 1950, 1959, 2001
Oct 1904–Sep 1906 24-Month	50.9°F (10.5°C)	51.7°F (10.9°C)	-0.8°F (-0.4°C)	25th Coolest	Coolest since: 1905	1979
	50.9°F (10.5°C)	51.7°F (10.9°C)	-0.8°F (-0.4°C)	102nd Warmest	Warmest since: 1901	2017
	Ties: 1952, 1962, 1968, 1969, 1994
Oct 1903–Sep 1906 36-Month	49.9°F (9.9°C)	51.6°F (10.9°C)	-1.7°F (-1.0°C)	3rd Coolest	Coolest since: 1905	1979
	49.9°F (9.9°C)	51.6°F (10.9°C)	-1.7°F (-1.0°C)	123rd Warmest	Warmest since: 1905	2018
	Ties: 1905
Oct 1902–Sep 1906 48-Month	50.3°F (10.2°C)	51.6°F (10.9°C)	-1.3°F (-0.7°C)	5th Coolest	Coolest since: 1905	1905
	50.3°F (10.2°C)	51.6°F (10.9°C)	-1.3°F (-0.7°C)	120th Warmest	Warmest since: 1904	2019
	Ties: 1904, 1979
Oct 1901–Sep 1906 60-Month	50.2°F (10.1°C)	51.6°F (10.9°C)	-1.4°F (-0.8°C)	1st Coolest	Coolest since: 1906	1906
Oct 1901–Sep 1906 60-Month	50.2°F (10.1°C)	51.6°F (10.9°C)	-1.4°F (-0.8°C)	123rd Warmest	Warmest since: 1905	2020

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on January 31, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings