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 1977

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1977 1-Month	63.8°F (17.7°C)	63.7°F (17.6°C)	0.1°F (0.1°C)	62nd Coolest	Coolest since: 1976	1918
	63.8°F (17.7°C)	63.7°F (17.6°C)	0.1°F (0.1°C)	67th Warmest	Warmest since: 1973	1897
	Ties: 1964
Aug–Sep 1977 2-Month	66.3°F (19.1°C)	67.4°F (19.7°C)	-1.1°F (-0.6°C)	32nd Coolest	Coolest since: 1976	1902
	66.3°F (19.1°C)	67.4°F (19.7°C)	-1.1°F (-0.6°C)	97th Warmest	Warmest since: 1973	1947
	Ties: 1945
Jul–Sep 1977 3-Month	69.4°F (20.8°C)	69.4°F (20.8°C)	0.0°F (0.0°C)	57th Coolest	Coolest since: 1976	1924
	69.4°F (20.8°C)	69.4°F (20.8°C)	0.0°F (0.0°C)	72nd Warmest	Warmest since: 1973	1936
	Ties: 1932, 1940
Jun–Sep 1977 4-Month	68.9°F (20.5°C)	69.2°F (20.7°C)	-0.3°F (-0.2°C)	46th Coolest	Coolest since: 1976	1915
	68.9°F (20.5°C)	69.2°F (20.7°C)	-0.3°F (-0.2°C)	83rd Warmest	Warmest since: 1973	2005
	Ties: 1994
May–Sep 1977 5-Month	68.5°F (20.3°C)	67.1°F (19.5°C)	1.4°F (0.8°C)	99th Coolest	Coolest since: 1976	1924
	68.5°F (20.3°C)	67.1°F (19.5°C)	1.4°F (0.8°C)	30th Warmest	Warmest since: 1959	1921, 1988
	Ties: 1999, 2002, 2020
Apr–Sep 1977 6-Month	66.1°F (18.9°C)	63.9°F (17.7°C)	2.2°F (1.2°C)	116th Coolest	Coolest since: 1976	1907
	66.1°F (18.9°C)	63.9°F (17.7°C)	2.2°F (1.2°C)	13th Warmest	Warmest since: 1959	1921
	Ties: 1959, 2016
Mar–Sep 1977 7-Month	62.8°F (17.1°C)	59.9°F (15.5°C)	2.9°F (1.6°C)	123rd Coolest	Coolest since: 1976	1924
	62.8°F (17.1°C)	59.9°F (15.5°C)	2.9°F (1.6°C)	6th Warmest	Warmest since: 1921	2012
	Ties: 1987, 2016
Feb–Sep 1977 8-Month	58.0°F (14.4°C)	55.5°F (13.1°C)	2.5°F (1.3°C)	120th Coolest	Coolest since: 1976	1904, 1917
	58.0°F (14.4°C)	55.5°F (13.1°C)	2.5°F (1.3°C)	9th Warmest	Warmest since: 1921	2012
	Ties: 2017
Jan–Sep 1977 9-Month	52.4°F (11.3°C)	51.7°F (10.9°C)	0.7°F (0.4°C)	83rd Coolest	Coolest since: 1976	1904, 1912
	52.4°F (11.3°C)	51.7°F (10.9°C)	0.7°F (0.4°C)	46th Warmest	Warmest since: 1976	2012
	Ties: 1949, 1976, 2004
Dec 1976–Sep 1977 10-Month	48.9°F (9.4°C)	49.1°F (9.5°C)	-0.2°F (-0.1°C)	48th Coolest	Coolest since: 1974	1904
	48.9°F (9.4°C)	49.1°F (9.5°C)	-0.2°F (-0.1°C)	80th Warmest	Warmest since: 1976	2012
	Ties: 1927, 1948, 1959, 1961, 1966, 2008
Nov 1976–Sep 1977 11-Month	47.2°F (8.4°C)	48.1°F (8.9°C)	-0.9°F (-0.5°C)	29th Coolest	Coolest since: 1967	1904
	47.2°F (8.4°C)	48.1°F (8.9°C)	-0.9°F (-0.5°C)	99th Warmest	Warmest since: 1976	2012
	Ties: 1967, 1984
Oct 1976–Sep 1977 12-Month	47.2°F (8.4°C)	48.5°F (9.2°C)	-1.3°F (-0.8°C)	17th Coolest	Coolest since: 1951	1904
	47.2°F (8.4°C)	48.5°F (9.2°C)	-1.3°F (-0.8°C)	111th Warmest	Warmest since: 1976	2012
	Ties: 1907, 1915
Apr 1976–Sep 1977 18-Month	52.6°F (11.4°C)	53.6°F (12.0°C)	-1.0°F (-0.6°C)	20th Coolest	Coolest since: 1967	1904
	52.6°F (11.4°C)	53.6°F (12.0°C)	-1.0°F (-0.6°C)	108th Warmest	Warmest since: 1976	2012
	Ties: 1920
Oct 1975–Sep 1977 24-Month	48.5°F (9.2°C)	48.4°F (9.1°C)	0.1°F (0.1°C)	58th Coolest	Coolest since: 1972	1918
	48.5°F (9.2°C)	48.4°F (9.1°C)	0.1°F (0.1°C)	69th Warmest	Warmest since: 1976	2017
	Ties: 1897, 1920, 1938, 1950, 1957, 1964
Oct 1974–Sep 1977 36-Month	48.5°F (9.2°C)	48.4°F (9.1°C)	0.1°F (0.1°C)	60th Coolest	Coolest since: 1972	1979
	48.5°F (9.2°C)	48.4°F (9.1°C)	0.1°F (0.1°C)	66th Warmest	Warmest since: 1976	2000
	Ties: 1900, 1915, 1946, 1948, 1950
Oct 1973–Sep 1977 48-Month	48.6°F (9.2°C)	48.4°F (9.1°C)	0.2°F (0.1°C)	65th Coolest	Coolest since: 1973	1905, 1918
	48.6°F (9.2°C)	48.4°F (9.1°C)	0.2°F (0.1°C)	60th Warmest	Warmest since: 1976	2001, 2002, 2019
	Ties: 1901, 1931, 1943, 1985
Oct 1972–Sep 1977 60-Month	48.7°F (9.3°C)	48.4°F (9.1°C)	0.3°F (0.2°C)	73rd Coolest	Coolest since: 1975	1905, 1906
	48.7°F (9.3°C)	48.4°F (9.1°C)	0.3°F (0.2°C)	51st Warmest	Warmest since: 1976	2002
	Ties: 1944, 1945, 1959

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on January 28, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings