Climate at a Glance | Statewide Rankings | National Centers for Environmental Information (NCEI)

Statewide Rankings

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Illinois

January 1950 Average Temperature Rankings

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Coolest/Warmest Since	Record
January 1950 1-Month	32.1°F (0.1°C)	25.3°F (-3.7°C)	6.8°F	121st Coolest	Coolest since: 1949	1977
January 1950 1-Month	32.1°F (0.1°C)	25.3°F (-3.7°C)	6.8°F	11th Warmest	Warmest since: 1939	2006
Dec 1949–Jan 1950 2-Month	33.1°F (0.6°C)	27.5°F (-2.5°C)	5.6°F	122nd Coolest	Coolest since: 1949	1918
Dec 1949–Jan 1950 2-Month	33.1°F (0.6°C)	27.5°F (-2.5°C)	5.6°F	9th Warmest	Warmest since: 1932	1932
Nov 1949–Jan 1950 3-Month	36.2°F (2.3°C)	31.9°F (-0.1°C)	4.3°F	120th Coolest	Coolest since: 1949	1977
Nov 1949–Jan 1950 3-Month	36.2°F (2.3°C)	31.9°F (-0.1°C)	4.3°F	11th Warmest	Warmest since: 1932	1932
Oct 1949–Jan 1950 4-Month	41.5°F (5.3°C)	37.6°F (3.1°C)	3.9°F	123rd Coolest	Coolest since: 1949	1977
Oct 1949–Jan 1950 4-Month	41.5°F (5.3°C)	37.6°F (3.1°C)	3.9°F	8th Warmest	Warmest since: 1947	1932
Sep 1949–Jan 1950 5-Month	45.2°F (7.3°C)	43.3°F (6.3°C)	1.9°F	102nd Coolest	Coolest since: 1949	1977
	45.2°F (7.3°C)	43.3°F (6.3°C)	1.9°F	29th Warmest	Warmest since: 1947	1932
	Ties: 1898
Aug 1949–Jan 1950 6-Month	50.0°F (10.0°C)	48.4°F (9.1°C)	1.6°F	103rd Coolest	Coolest since: 1949	1977
Aug 1949–Jan 1950 6-Month	50.0°F (10.0°C)	48.4°F (9.1°C)	1.6°F	28th Warmest	Warmest since: 1947	1932
Jul 1949–Jan 1950 7-Month	54.0°F (12.2°C)	52.2°F (11.2°C)	1.8°F	108th Coolest	Coolest since: 1949	1977
Jul 1949–Jan 1950 7-Month	54.0°F (12.2°C)	52.2°F (11.2°C)	1.8°F	23rd Warmest	Warmest since: 1942	1932
Jun 1949–Jan 1950 8-Month	56.5°F (13.6°C)	54.6°F (12.6°C)	1.9°F	108th Coolest	Coolest since: 1949	1918, 1977
Jun 1949–Jan 1950 8-Month	56.5°F (13.6°C)	54.6°F (12.6°C)	1.9°F	23rd Warmest	Warmest since: 1942	1932
May 1949–Jan 1950 9-Month	57.3°F (14.1°C)	55.5°F (13.1°C)	1.8°F	107th Coolest	Coolest since: 1949	1918
May 1949–Jan 1950 9-Month	57.3°F (14.1°C)	55.5°F (13.1°C)	1.8°F	24th Warmest	Warmest since: 1942	1932
Apr 1949–Jan 1950 10-Month	56.7°F (13.7°C)	55.1°F (12.8°C)	1.6°F	105th Coolest	Coolest since: 1949	1918
	56.7°F (13.7°C)	55.1°F (12.8°C)	1.6°F	26th Warmest	Warmest since: 1942	1932
	Ties: 1901
Mar 1949–Jan 1950 11-Month	55.1°F (12.8°C)	53.7°F (12.1°C)	1.4°F	101st Coolest	Coolest since: 1949	1918
Mar 1949–Jan 1950 11-Month	55.1°F (12.8°C)	53.7°F (12.1°C)	1.4°F	30th Warmest	Warmest since: 1947	2013
Feb 1949–Jan 1950 12-Month	53.1°F (11.7°C)	51.6°F (10.9°C)	1.5°F	105th Coolest	Coolest since: 1949	1918
Feb 1949–Jan 1950 12-Month	53.1°F (11.7°C)	51.6°F (10.9°C)	1.5°F	26th Warmest	Warmest since: 1947	2013
Aug 1948–Jan 1950 18-Month	51.9°F (11.1°C)	50.5°F (10.3°C)	1.4°F	104th Coolest	Coolest since: 1949	1905, 1918
Aug 1948–Jan 1950 18-Month	51.9°F (11.1°C)	50.5°F (10.3°C)	1.4°F	26th Warmest	Warmest since: 1942	2017
Feb 1948–Jan 1950 24-Month	52.7°F (11.5°C)	51.6°F (10.9°C)	1.1°F	96th Coolest	Coolest since: 1949	1918
Feb 1948–Jan 1950 24-Month	52.7°F (11.5°C)	51.6°F (10.9°C)	1.1°F	34th Warmest	Warmest since: 1940	2013
Feb 1947–Jan 1950 36-Month	52.0°F (11.1°C)	51.6°F (10.9°C)	0.4°F	78th Coolest	Coolest since: 1948	1905
Feb 1947–Jan 1950 36-Month	52.0°F (11.1°C)	51.6°F (10.9°C)	0.4°F	51st Warmest	Warmest since: 1949	2013
Feb 1946–Jan 1950 48-Month	52.4°F (11.3°C)	51.6°F (10.9°C)	0.8°F	92nd Coolest	Coolest since: 1949	1905
Feb 1946–Jan 1950 48-Month	52.4°F (11.3°C)	51.6°F (10.9°C)	0.8°F	36th Warmest	Warmest since: 1942	2025
Feb 1945–Jan 1950 60-Month	52.2°F (11.2°C)	51.6°F (10.9°C)	0.6°F	82nd Coolest	Coolest since: 1949	1906
Feb 1945–Jan 1950 60-Month	52.2°F (11.2°C)	51.6°F (10.9°C)	0.6°F	45th Warmest	Warmest since: 1943	2025

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2025, retrieved on March 24, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings

Climate at a Glance Statewide Rankings

Statewide Rankings

Illinois

January 1950 Average Temperature Rankings

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