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 1977

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1977 1-Month	69.1°F (20.6°C)	67.4°F (19.7°C)	1.7°F (0.9°C)	86th Coolest	Coolest since: 1976	1918
	69.1°F (20.6°C)	67.4°F (19.7°C)	1.7°F (0.9°C)	43rd Warmest	Warmest since: 1973	1925
	Ties: 1972
Aug–Sep 1977 2-Month	71.2°F (21.8°C)	70.8°F (21.6°C)	0.4°F (0.2°C)	74th Coolest	Coolest since: 1976	1967
	71.2°F (21.8°C)	70.8°F (21.6°C)	0.4°F (0.2°C)	55th Warmest	Warmest since: 1973	1936
	Ties: 1899, 1935, 1971
Jul–Sep 1977 3-Month	73.5°F (23.1°C)	72.7°F (22.6°C)	0.8°F (0.5°C)	85th Coolest	Coolest since: 1976	1967
	73.5°F (23.1°C)	72.7°F (22.6°C)	0.8°F (0.5°C)	44th Warmest	Warmest since: 1973	1936
	Ties: 1906, 1987
Jun–Sep 1977 4-Month	72.9°F (22.7°C)	72.5°F (22.5°C)	0.4°F (0.2°C)	74th Coolest	Coolest since: 1976	1967
Jun–Sep 1977 4-Month	72.9°F (22.7°C)	72.5°F (22.5°C)	0.4°F (0.2°C)	55th Warmest	Warmest since: 1973	1936
May–Sep 1977 5-Month	72.3°F (22.4°C)	70.7°F (21.5°C)	1.6°F (0.9°C)	104th Coolest	Coolest since: 1976	1924
	72.3°F (22.4°C)	70.7°F (21.5°C)	1.6°F (0.9°C)	25th Warmest	Warmest since: 1959	1936
	Ties: 1930
Apr–Sep 1977 6-Month	70.0°F (21.1°C)	67.8°F (19.9°C)	2.2°F (1.2°C)	120th Coolest	Coolest since: 1976	1907
	70.0°F (21.1°C)	67.8°F (19.9°C)	2.2°F (1.2°C)	9th Warmest	Warmest since: 1954	2010
	Ties: 1934
Mar–Sep 1977 7-Month	66.7°F (19.3°C)	64.0°F (17.8°C)	2.7°F (1.5°C)	122nd Coolest	Coolest since: 1976	1924
Mar–Sep 1977 7-Month	66.7°F (19.3°C)	64.0°F (17.8°C)	2.7°F (1.5°C)	7th Warmest	Warmest since: 1936	2012
Feb–Sep 1977 8-Month	62.0°F (16.7°C)	59.9°F (15.5°C)	2.1°F (1.2°C)	116th Coolest	Coolest since: 1976	1904, 1924
	62.0°F (16.7°C)	59.9°F (15.5°C)	2.1°F (1.2°C)	13th Warmest	Warmest since: 1954	2012
	Ties: 2005
Jan–Sep 1977 9-Month	56.4°F (13.6°C)	56.4°F (13.6°C)	0.0°F (0.0°C)	66th Coolest	Coolest since: 1975	1979
	56.4°F (13.6°C)	56.4°F (13.6°C)	0.0°F (0.0°C)	63rd Warmest	Warmest since: 1976	2012
	Ties: 1927, 1956
Dec 1976–Sep 1977 10-Month	53.4°F (11.9°C)	53.9°F (12.2°C)	-0.5°F (-0.3°C)	41st Coolest	Coolest since: 1971	1904
	53.4°F (11.9°C)	53.9°F (12.2°C)	-0.5°F (-0.3°C)	87th Warmest	Warmest since: 1976	2012
	Ties: 1897, 1923, 1947, 1965
Nov 1976–Sep 1977 11-Month	51.7°F (10.9°C)	52.8°F (11.6°C)	-1.1°F (-0.7°C)	23rd Coolest	Coolest since: 1970	1904
Nov 1976–Sep 1977 11-Month	51.7°F (10.9°C)	52.8°F (11.6°C)	-1.1°F (-0.7°C)	105th Warmest	Warmest since: 1976	2012
Oct 1976–Sep 1977 12-Month	51.5°F (10.8°C)	53.1°F (11.7°C)	-1.6°F (-0.9°C)	12th Coolest	Coolest since: 1958	1904
	51.5°F (10.8°C)	53.1°F (11.7°C)	-1.6°F (-0.9°C)	116th Warmest	Warmest since: 1976	2012
	Ties: 1917, 1920, 1926, 1958, 1984, 1996
Apr 1976–Sep 1977 18-Month	56.4°F (13.6°C)	58.0°F (14.4°C)	-1.6°F (-0.8°C)	5th Coolest	Coolest since: 1951	1918
	56.4°F (13.6°C)	58.0°F (14.4°C)	-1.6°F (-0.8°C)	123rd Warmest	Warmest since: 1976	2012
	Ties: 1899, 1924, 1979, 2014
Oct 1975–Sep 1977 24-Month	52.7°F (11.5°C)	53.0°F (11.7°C)	-0.3°F (-0.2°C)	43rd Coolest	Coolest since: 1971	1979
	52.7°F (11.5°C)	53.0°F (11.7°C)	-0.3°F (-0.2°C)	84th Warmest	Warmest since: 1976	2017
	Ties: 1966
Oct 1974–Sep 1977 36-Month	52.8°F (11.6°C)	53.1°F (11.7°C)	-0.3°F (-0.1°C)	41st Coolest	Coolest since: 1972	1979
	52.8°F (11.6°C)	53.1°F (11.7°C)	-0.3°F (-0.1°C)	85th Warmest	Warmest since: 1976	2018
	Ties: 1909, 1910, 1930, 1951, 1983, 1994, 1996, 1997
Oct 1973–Sep 1977 48-Month	53.0°F (11.7°C)	53.1°F (11.7°C)	-0.1°F (0.0°C)	51st Coolest	Coolest since: 1973	1980
	53.0°F (11.7°C)	53.1°F (11.7°C)	-0.1°F (0.0°C)	74th Warmest	Warmest since: 1976	2019
	Ties: 1911
Oct 1972–Sep 1977 60-Month	53.0°F (11.7°C)	53.0°F (11.7°C)	0.0°F (0.0°C)	50th Coolest	Coolest since: 1974	1982
	53.0°F (11.7°C)	53.0°F (11.7°C)	0.0°F (0.0°C)	74th Warmest	Warmest since: 1976	2020
	Ties: 1917, 1931, 1951, 1974, 1986, 1996

Citing This Page

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