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, July 1979

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
July 1979 1-Month	73.7°F (23.2°C)	75.6°F (24.2°C)	-1.9°F (-1.0°C)	27th Coolest	Coolest since: 1971	2009, 2014
	73.7°F (23.2°C)	75.6°F (24.2°C)	-1.9°F (-1.0°C)	102nd Warmest	Warmest since: 1978	1936
	Ties: 1927
Jun–Jul 1979 2-Month	72.8°F (22.7°C)	73.5°F (23.1°C)	-0.7°F (-0.4°C)	45th Coolest	Coolest since: 1974	1915
	72.8°F (22.7°C)	73.5°F (23.1°C)	-0.7°F (-0.4°C)	84th Warmest	Warmest since: 1978	1934
	Ties: 1937, 1997
May–Jul 1979 3-Month	69.0°F (20.6°C)	69.7°F (20.9°C)	-0.7°F (-0.3°C)	41st Coolest	Coolest since: 1976	1924
	69.0°F (20.6°C)	69.7°F (20.9°C)	-0.7°F (-0.3°C)	88th Warmest	Warmest since: 1978	1934
	Ties: 1905, 1908, 1969, 1984, 2014
Apr–Jul 1979 4-Month	64.0°F (17.8°C)	65.1°F (18.4°C)	-1.1°F (-0.6°C)	21st Coolest	Coolest since: 1967	1907
	64.0°F (17.8°C)	65.1°F (18.4°C)	-1.1°F (-0.6°C)	108th Warmest	Warmest since: 1978	1934
	Ties: 1897, 1967, 1990
Mar–Jul 1979 5-Month	59.1°F (15.1°C)	60.1°F (15.6°C)	-1.0°F (-0.5°C)	31st Coolest	Coolest since: 1978	1960
	59.1°F (15.1°C)	60.1°F (15.6°C)	-1.0°F (-0.5°C)	98th Warmest	Warmest since: 1977	2012
	Ties: 1965, 1971
Feb–Jul 1979 6-Month	52.2°F (11.2°C)	55.0°F (12.8°C)	-2.8°F (-1.6°C)	9th Coolest	Coolest since: 1978	1947
	52.2°F (11.2°C)	55.0°F (12.8°C)	-2.8°F (-1.6°C)	120th Warmest	Warmest since: 1977	2012
	Ties: 2014
Jan–Jul 1979 7-Month	46.5°F (8.1°C)	50.7°F (10.4°C)	-4.2°F (-2.3°C)	2nd Coolest	Coolest since: 1912	1912
Jan–Jul 1979 7-Month	46.5°F (8.1°C)	50.7°F (10.4°C)	-4.2°F (-2.3°C)	127th Warmest	Warmest since: 1978	2012
Dec 1978–Jul 1979 8-Month	44.4°F (6.9°C)	48.1°F (8.9°C)	-3.7°F (-2.0°C)	3rd Coolest	Coolest since: 1978	1904
Dec 1978–Jul 1979 8-Month	44.4°F (6.9°C)	48.1°F (8.9°C)	-3.7°F (-2.0°C)	125th Warmest	Warmest since: 1977	2012
Nov 1978–Jul 1979 9-Month	44.2°F (6.8°C)	47.2°F (8.4°C)	-3.0°F (-1.6°C)	4th Coolest	Coolest since: 1978	1904
	44.2°F (6.8°C)	47.2°F (8.4°C)	-3.0°F (-1.6°C)	124th Warmest	Warmest since: 1977	2012
	Ties: 2014
Oct 1978–Jul 1979 10-Month	45.0°F (7.2°C)	47.9°F (8.8°C)	-2.9°F (-1.6°C)	4th Coolest	Coolest since: 1978	1904
Oct 1978–Jul 1979 10-Month	45.0°F (7.2°C)	47.9°F (8.8°C)	-2.9°F (-1.6°C)	124th Warmest	Warmest since: 1977	2012
Sep 1978–Jul 1979 11-Month	47.3°F (8.5°C)	49.6°F (9.8°C)	-2.3°F (-1.3°C)	5th Coolest	Coolest since: 1978	1904
	47.3°F (8.5°C)	49.6°F (9.8°C)	-2.3°F (-1.3°C)	123rd Warmest	Warmest since: 1977	2012
	Ties: 2014
Aug 1978–Jul 1979 12-Month	49.5°F (9.7°C)	51.7°F (10.9°C)	-2.2°F (-1.2°C)	6th Coolest	Coolest since: 1978	1904
	49.5°F (9.7°C)	51.7°F (10.9°C)	-2.2°F (-1.2°C)	122nd Warmest	Warmest since: 1977	2012
	Ties: 1899
Feb 1978–Jul 1979 18-Month	50.3°F (10.2°C)	52.8°F (11.6°C)	-2.5°F (-1.4°C)	3rd Coolest	Coolest since: 1918	1918
Feb 1978–Jul 1979 18-Month	50.3°F (10.2°C)	52.8°F (11.6°C)	-2.5°F (-1.4°C)	125th Warmest	Warmest since: 1978	2012
Aug 1977–Jul 1979 24-Month	49.1°F (9.5°C)	51.6°F (10.9°C)	-2.5°F (-1.4°C)	2nd Coolest	Coolest since: 1905	1905
Aug 1977–Jul 1979 24-Month	49.1°F (9.5°C)	51.6°F (10.9°C)	-2.5°F (-1.4°C)	125th Warmest	Warmest since: 1978	2017
Aug 1976–Jul 1979 36-Month	49.4°F (9.7°C)	51.6°F (10.9°C)	-2.2°F (-1.2°C)	1st Coolest	Coolest since: 1979	1979
Aug 1976–Jul 1979 36-Month	49.4°F (9.7°C)	51.6°F (10.9°C)	-2.2°F (-1.2°C)	125th Warmest	Warmest since: 1978	2018
Aug 1975–Jul 1979 48-Month	50.3°F (10.2°C)	51.6°F (10.9°C)	-1.3°F (-0.7°C)	6th Coolest	Coolest since: 1918	1905, 1980
Aug 1975–Jul 1979 48-Month	50.3°F (10.2°C)	51.6°F (10.9°C)	-1.3°F (-0.7°C)	119th Warmest	Warmest since: 1978	2019
Aug 1974–Jul 1979 60-Month	50.4°F (10.2°C)	51.6°F (10.9°C)	-1.2°F (-0.7°C)	5th Coolest	Coolest since: 1908	1906
	50.4°F (10.2°C)	51.6°F (10.9°C)	-1.2°F (-0.7°C)	119th Warmest	Warmest since: 1978	2020
	Ties: 1905, 1981

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on February 1, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings