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 7. East Southeast

Average Temperature Rankings, September 1958

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1958 1-Month	66.7°F (19.3°C)	67.4°F (19.7°C)	-0.7°F (-0.4°C)	53rd Coolest	Coolest since: 1957	1918
	66.7°F (19.3°C)	67.4°F (19.7°C)	-0.7°F (-0.4°C)	76th Warmest	Warmest since: 1955	1925
	Ties: 1935
Aug–Sep 1958 2-Month	70.4°F (21.3°C)	70.8°F (21.6°C)	-0.4°F (-0.3°C)	53rd Coolest	Coolest since: 1957	1967
	70.4°F (21.3°C)	70.8°F (21.6°C)	-0.4°F (-0.3°C)	76th Warmest	Warmest since: 1955	1936
	Ties: 1920
Jul–Sep 1958 3-Month	71.6°F (22.0°C)	72.6°F (22.6°C)	-1.0°F (-0.6°C)	34th Coolest	Coolest since: 1951	1967
	71.6°F (22.0°C)	72.6°F (22.6°C)	-1.0°F (-0.6°C)	95th Warmest	Warmest since: 1957	1936
	Ties: 1909, 1945, 1949, 2000
Jun–Sep 1958 4-Month	70.9°F (21.6°C)	72.6°F (22.6°C)	-1.7°F (-1.0°C)	18th Coolest	Coolest since: 1951	1967
	70.9°F (21.6°C)	72.6°F (22.6°C)	-1.7°F (-1.0°C)	111th Warmest	Warmest since: 1957	1936
	Ties: 1945
May–Sep 1958 5-Month	69.3°F (20.7°C)	70.7°F (21.5°C)	-1.4°F (-0.8°C)	18th Coolest	Coolest since: 1950	1924
	69.3°F (20.7°C)	70.7°F (21.5°C)	-1.4°F (-0.8°C)	111th Warmest	Warmest since: 1957	1936
	Ties: 1981, 1989
Apr–Sep 1958 6-Month	66.6°F (19.2°C)	67.7°F (19.8°C)	-1.1°F (-0.6°C)	25th Coolest	Coolest since: 1951	1907
	66.6°F (19.2°C)	67.7°F (19.8°C)	-1.1°F (-0.6°C)	104th Warmest	Warmest since: 1957	2010
	Ties: 1897, 1902
Mar–Sep 1958 7-Month	62.2°F (16.8°C)	64.0°F (17.8°C)	-1.8°F (-1.0°C)	10th Coolest	Coolest since: 1951	1924
Mar–Sep 1958 7-Month	62.2°F (16.8°C)	64.0°F (17.8°C)	-1.8°F (-1.0°C)	119th Warmest	Warmest since: 1957	2012
Feb–Sep 1958 8-Month	57.4°F (14.1°C)	59.9°F (15.5°C)	-2.5°F (-1.4°C)	3rd Coolest	Coolest since: 1924	1904, 1924
	57.4°F (14.1°C)	59.9°F (15.5°C)	-2.5°F (-1.4°C)	126th Warmest	Warmest since: 1957	2012
	Ties: 1979
Jan–Sep 1958 9-Month	54.2°F (12.3°C)	56.4°F (13.6°C)	-2.2°F (-1.3°C)	9th Coolest	Coolest since: 1940	1979
Jan–Sep 1958 9-Month	54.2°F (12.3°C)	56.4°F (13.6°C)	-2.2°F (-1.3°C)	120th Warmest	Warmest since: 1957	2012
Dec 1957–Sep 1958 10-Month	52.5°F (11.4°C)	53.9°F (12.2°C)	-1.4°F (-0.8°C)	21st Coolest	Coolest since: 1951	1904
Dec 1957–Sep 1958 10-Month	52.5°F (11.4°C)	53.9°F (12.2°C)	-1.4°F (-0.8°C)	107th Warmest	Warmest since: 1957	2012
Nov 1957–Sep 1958 11-Month	51.4°F (10.8°C)	52.8°F (11.6°C)	-1.4°F (-0.8°C)	18th Coolest	Coolest since: 1951	1904
Nov 1957–Sep 1958 11-Month	51.4°F (10.8°C)	52.8°F (11.6°C)	-1.4°F (-0.8°C)	110th Warmest	Warmest since: 1957	2012
Oct 1957–Sep 1958 12-Month	51.5°F (10.8°C)	53.1°F (11.7°C)	-1.6°F (-0.9°C)	12th Coolest	Coolest since: 1951	1904
	51.5°F (10.8°C)	53.1°F (11.7°C)	-1.6°F (-0.9°C)	116th Warmest	Warmest since: 1957	2012
	Ties: 1917, 1920, 1926, 1977, 1984, 1996
Apr 1957–Sep 1958 18-Month	57.0°F (13.9°C)	58.0°F (14.4°C)	-1.0°F (-0.5°C)	20th Coolest	Coolest since: 1951	1918
	57.0°F (13.9°C)	58.0°F (14.4°C)	-1.0°F (-0.5°C)	108th Warmest	Warmest since: 1957	2012
	Ties: 1928, 1962, 1970, 1984, 1996, 1997
Oct 1956–Sep 1958 24-Month	52.8°F (11.6°C)	53.1°F (11.7°C)	-0.3°F (-0.1°C)	45th Coolest	Coolest since: 1952	1979
	52.8°F (11.6°C)	53.1°F (11.7°C)	-0.3°F (-0.1°C)	82nd Warmest	Warmest since: 1957	2017
	Ties: 1937, 1964, 1981
Oct 1955–Sep 1958 36-Month	52.7°F (11.5°C)	53.0°F (11.7°C)	-0.3°F (-0.2°C)	34th Coolest	Coolest since: 1952	1979
	52.7°F (11.5°C)	53.0°F (11.7°C)	-0.3°F (-0.2°C)	92nd Warmest	Warmest since: 1957	2018
	Ties: 1900, 1913, 1952, 1964, 1965, 1972
Oct 1954–Sep 1958 48-Month	53.2°F (11.8°C)	53.1°F (11.7°C)	0.1°F (0.1°C)	58th Coolest	Coolest since: 1953	1980
	53.2°F (11.8°C)	53.1°F (11.7°C)	0.1°F (0.1°C)	67th Warmest	Warmest since: 1957	2019
	Ties: 1940, 1946, 1947, 1953
Oct 1953–Sep 1958 60-Month	53.7°F (12.1°C)	53.0°F (11.7°C)	0.7°F (0.4°C)	85th Coolest	Coolest since: 1954	1982
	53.7°F (12.1°C)	53.0°F (11.7°C)	0.7°F (0.4°C)	39th Warmest	Warmest since: 1957	2020
	Ties: 1932, 1943, 1954, 1987, 1993

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on February 4, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings