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 1937

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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 1937 1-Month	65.3°F (18.5°C)	66.2°F (19.0°C)	-0.9°F (-0.5°C)	43rd Coolest	Coolest since: 1934	1918
	65.3°F (18.5°C)	66.2°F (19.0°C)	-0.9°F (-0.5°C)	86th Warmest	Warmest since: 1936	1925, 1933
	Ties: 1994
Aug–Sep 1937 2-Month	71.2°F (21.8°C)	69.8°F (21.0°C)	1.4°F (0.8°C)	94th Coolest	Coolest since: 1935	1967
	71.2°F (21.8°C)	69.8°F (21.0°C)	1.4°F (0.8°C)	35th Warmest	Warmest since: 1936	1936
	Ties: 2015
Jul–Sep 1937 3-Month	72.4°F (22.4°C)	71.7°F (22.1°C)	0.7°F (0.3°C)	84th Coolest	Coolest since: 1932	1967
	72.4°F (22.4°C)	71.7°F (22.1°C)	0.7°F (0.3°C)	45th Warmest	Warmest since: 1936	1936
	Ties: 1908, 1911, 1922, 1926
Jun–Sep 1937 4-Month	72.0°F (22.2°C)	71.7°F (22.1°C)	0.3°F (0.1°C)	75th Coolest	Coolest since: 1935	1915, 1924
	72.0°F (22.2°C)	71.7°F (22.1°C)	0.3°F (0.1°C)	54th Warmest	Warmest since: 1936	1936
	Ties: 1906, 1940, 1948, 2017
May–Sep 1937 5-Month	70.1°F (21.2°C)	69.7°F (20.9°C)	0.4°F (0.3°C)	73rd Coolest	Coolest since: 1935	1924
	70.1°F (21.2°C)	69.7°F (20.9°C)	0.4°F (0.3°C)	56th Warmest	Warmest since: 1936	1936
	Ties: 1899
Apr–Sep 1937 6-Month	66.8°F (19.3°C)	66.7°F (19.3°C)	0.1°F (0.0°C)	66th Coolest	Coolest since: 1935	1907
	66.8°F (19.3°C)	66.7°F (19.3°C)	0.1°F (0.0°C)	63rd Warmest	Warmest since: 1936	2010
	Ties: 1898, 1949, 1957, 1963, 1995, 2000
Mar–Sep 1937 7-Month	62.5°F (16.9°C)	62.9°F (17.2°C)	-0.4°F (-0.3°C)	46th Coolest	Coolest since: 1935	1924
	62.5°F (16.9°C)	62.9°F (17.2°C)	-0.4°F (-0.3°C)	83rd Warmest	Warmest since: 1936	2012
	Ties: 1897, 1903, 1935, 1978, 2009
Feb–Sep 1937 8-Month	58.1°F (14.5°C)	58.7°F (14.8°C)	-0.6°F (-0.3°C)	42nd Coolest	Coolest since: 1929	1904
	58.1°F (14.5°C)	58.7°F (14.8°C)	-0.6°F (-0.3°C)	87th Warmest	Warmest since: 1936	2012
	Ties: 1900, 1984, 1997, 2003, 2015
Jan–Sep 1937 9-Month	54.6°F (12.6°C)	54.9°F (12.7°C)	-0.3°F (-0.1°C)	52nd Coolest	Coolest since: 1929	1904, 1912
	54.6°F (12.6°C)	54.9°F (12.7°C)	-0.3°F (-0.1°C)	77th Warmest	Warmest since: 1936	2012
	Ties: 1897, 1909
Dec 1936–Sep 1937 10-Month	52.5°F (11.4°C)	52.4°F (11.3°C)	0.1°F (0.1°C)	69th Coolest	Coolest since: 1936	1904
	52.5°F (11.4°C)	52.4°F (11.3°C)	0.1°F (0.1°C)	59th Warmest	Warmest since: 1934	2012
	Ties: 1948, 1972, 1985, 2011, 2015
Nov 1936–Sep 1937 11-Month	51.1°F (10.6°C)	51.4°F (10.8°C)	-0.3°F (-0.2°C)	50th Coolest	Coolest since: 1936	1904
	51.1°F (10.6°C)	51.4°F (10.8°C)	-0.3°F (-0.2°C)	78th Warmest	Warmest since: 1935	2012
	Ties: 1923, 1943, 1975
Oct 1936–Sep 1937 12-Month	51.3°F (10.7°C)	51.6°F (10.9°C)	-0.3°F (-0.2°C)	44th Coolest	Coolest since: 1936	1904
	51.3°F (10.7°C)	51.6°F (10.9°C)	-0.3°F (-0.2°C)	84th Warmest	Warmest since: 1936	2012
	Ties: 1897, 1928, 1936, 1956, 2001
Apr 1936–Sep 1937 18-Month	57.5°F (14.2°C)	56.7°F (13.7°C)	0.8°F (0.5°C)	94th Coolest	Coolest since: 1936	1904, 1918
	57.5°F (14.2°C)	56.7°F (13.7°C)	0.8°F (0.5°C)	34th Warmest	Warmest since: 1935	2012
	Ties: 1983, 1995, 2019, 2021
Oct 1935–Sep 1937 24-Month	51.3°F (10.7°C)	51.6°F (10.9°C)	-0.3°F (-0.2°C)	41st Coolest	Coolest since: 1929	1979
	51.3°F (10.7°C)	51.6°F (10.9°C)	-0.3°F (-0.2°C)	86th Warmest	Warmest since: 1936	2017
	Ties: 1910, 1919
Oct 1934–Sep 1937 36-Month	51.6°F (10.9°C)	51.6°F (10.9°C)	0.0°F (0.0°C)	55th Coolest	Coolest since: 1930	1979
	51.6°F (10.9°C)	51.6°F (10.9°C)	0.0°F (0.0°C)	71st Warmest	Warmest since: 1936	2018
	Ties: 1916, 1947, 1953, 1959, 1983, 1995, 1998
Oct 1933–Sep 1937 48-Month	51.9°F (11.1°C)	51.6°F (10.9°C)	0.3°F (0.2°C)	73rd Coolest	Coolest since: 1931	1905
	51.9°F (11.1°C)	51.6°F (10.9°C)	0.3°F (0.2°C)	52nd Warmest	Warmest since: 1936	2019
	Ties: 1921, 1938, 1943, 1975, 1994, 2016
Oct 1932–Sep 1937 60-Month	52.1°F (11.2°C)	51.6°F (10.9°C)	0.5°F (0.3°C)	78th Coolest	Coolest since: 1931	1906
	52.1°F (11.2°C)	51.6°F (10.9°C)	0.5°F (0.3°C)	46th Warmest	Warmest since: 1936	2020
	Ties: 1938, 1945, 1954, 1993, 2015

Citing This Page

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