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 8. Southwest

Average Temperature Rankings, July 1977

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
July 1977 1-Month	79.5°F (26.4°C)	77.9°F (25.5°C)	1.6°F (0.9°C)	102nd Coolest	Coolest since: 1976	2014
	79.5°F (26.4°C)	77.9°F (25.5°C)	1.6°F (0.9°C)	27th Warmest	Warmest since: 1966	2012
	Ties: 1913, 1953, 2017
Jun–Jul 1977 2-Month	77.0°F (25.0°C)	75.9°F (24.4°C)	1.1°F (0.6°C)	95th Coolest	Coolest since: 1976	1904, 1927
	77.0°F (25.0°C)	75.9°F (24.4°C)	1.1°F (0.6°C)	34th Warmest	Warmest since: 1954	1934
	Ties: 1949, 1993, 2015, 2017
May–Jul 1977 3-Month	74.6°F (23.7°C)	72.3°F (22.4°C)	2.3°F (1.3°C)	113th Coolest	Coolest since: 1976	1924
	74.6°F (23.7°C)	72.3°F (22.4°C)	2.3°F (1.3°C)	16th Warmest	Warmest since: 1953	1934
	Ties: 1944, 1986
Apr–Jul 1977 4-Month	71.0°F (21.7°C)	68.1°F (20.1°C)	2.9°F (1.6°C)	124th Coolest	Coolest since: 1976	1907
Apr–Jul 1977 4-Month	71.0°F (21.7°C)	68.1°F (20.1°C)	2.9°F (1.6°C)	5th Warmest	Warmest since: 1934	2012
Mar–Jul 1977 5-Month	66.8°F (19.3°C)	63.4°F (17.4°C)	3.4°F (1.9°C)	126th Coolest	Coolest since: 1976	1960
Mar–Jul 1977 5-Month	66.8°F (19.3°C)	63.4°F (17.4°C)	3.4°F (1.9°C)	3rd Warmest	Warmest to Date	2012
Feb–Jul 1977 6-Month	61.4°F (16.3°C)	58.6°F (14.8°C)	2.8°F (1.5°C)	120th Coolest	Coolest since: 1976	1947
	61.4°F (16.3°C)	58.6°F (14.8°C)	2.8°F (1.5°C)	9th Warmest	Warmest since: 1954	2012
	Ties: 1954
Jan–Jul 1977 7-Month	54.8°F (12.7°C)	54.7°F (12.6°C)	0.1°F (0.1°C)	65th Coolest	Coolest since: 1975	1912
	54.8°F (12.7°C)	54.7°F (12.6°C)	0.1°F (0.1°C)	64th Warmest	Warmest since: 1976	2012
	Ties: 1901
Dec 1976–Jul 1977 8-Month	51.8°F (11.0°C)	52.2°F (11.2°C)	-0.4°F (-0.2°C)	43rd Coolest	Coolest since: 1971	1978
	51.8°F (11.0°C)	52.2°F (11.2°C)	-0.4°F (-0.2°C)	85th Warmest	Warmest since: 1976	2012
	Ties: 1907, 1962
Nov 1976–Jul 1977 9-Month	50.1°F (10.1°C)	51.3°F (10.7°C)	-1.2°F (-0.6°C)	22nd Coolest	Coolest since: 1970	1904, 1912
	50.1°F (10.1°C)	51.3°F (10.7°C)	-1.2°F (-0.6°C)	106th Warmest	Warmest since: 1976	2012
	Ties: 1915, 1917, 1968
Oct 1976–Jul 1977 10-Month	50.2°F (10.1°C)	52.0°F (11.1°C)	-1.8°F (-1.0°C)	12th Coolest	Coolest since: 1970	1904, 1912
	50.2°F (10.1°C)	52.0°F (11.1°C)	-1.8°F (-1.0°C)	116th Warmest	Warmest since: 1976	2012
	Ties: 1984
Sep 1976–Jul 1977 11-Month	51.7°F (10.9°C)	53.5°F (11.9°C)	-1.8°F (-1.0°C)	7th Coolest	Coolest since: 1970	1904
	51.7°F (10.9°C)	53.5°F (11.9°C)	-1.8°F (-1.0°C)	121st Warmest	Warmest since: 1976	2012
	Ties: 1958, 1960, 1970
Aug 1976–Jul 1977 12-Month	53.4°F (11.9°C)	55.4°F (13.0°C)	-2.0°F (-1.1°C)	7th Coolest	Coolest since: 1918	1904
Aug 1976–Jul 1977 12-Month	53.4°F (11.9°C)	55.4°F (13.0°C)	-2.0°F (-1.1°C)	121st Warmest	Warmest since: 1976	2012
Feb 1976–Jul 1977 18-Month	55.7°F (13.2°C)	56.5°F (13.6°C)	-0.8°F (-0.4°C)	27th Coolest	Coolest since: 1970	1918, 1979
	55.7°F (13.2°C)	56.5°F (13.6°C)	-0.8°F (-0.4°C)	101st Warmest	Warmest since: 1976	2012
	Ties: 1940, 1948, 1958, 1978, 1982
Aug 1975–Jul 1977 24-Month	54.8°F (12.7°C)	55.4°F (13.0°C)	-0.6°F (-0.3°C)	29th Coolest	Coolest since: 1971	1979
	54.8°F (12.7°C)	55.4°F (13.0°C)	-0.6°F (-0.3°C)	98th Warmest	Warmest since: 1976	2017
	Ties: 1907, 1917, 1952
Aug 1974–Jul 1977 36-Month	54.7°F (12.6°C)	55.4°F (13.0°C)	-0.7°F (-0.4°C)	18th Coolest	Coolest since: 1971	1979
	54.7°F (12.6°C)	55.4°F (13.0°C)	-0.7°F (-0.4°C)	108th Warmest	Warmest since: 1976	2018
	Ties: 1899, 1917, 1961, 1963, 1968, 1981
Aug 1973–Jul 1977 48-Month	55.2°F (12.9°C)	55.3°F (12.9°C)	-0.1°F (0.0°C)	39th Coolest	Coolest since: 1973	1980
	55.2°F (12.9°C)	55.3°F (12.9°C)	-0.1°F (0.0°C)	86th Warmest	Warmest since: 1976	2019
	Ties: 1903, 1909, 1926, 1951, 1952, 1965, 1966
Aug 1972–Jul 1977 60-Month	55.2°F (12.9°C)	55.3°F (12.9°C)	-0.1°F (0.0°C)	43rd Coolest	Coolest since: 1973	1906
	55.2°F (12.9°C)	55.3°F (12.9°C)	-0.1°F (0.0°C)	81st Warmest	Warmest since: 1976	2020
	Ties: 1901, 1910, 1915, 1927, 1966, 1967, 1996

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published June 2023, retrieved on June 9, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings