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

Statewide Rankings

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Illinois

January 1947 Average Temperature Rankings

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Coolest/Warmest Since	Record
January 1947 1-Month	30.2°F (-1.0°C)	25.3°F (-3.7°C)	4.9°F	109th Coolest	Coolest since: 1946	1977
January 1947 1-Month	30.2°F (-1.0°C)	25.3°F (-3.7°C)	4.9°F	23rd Warmest	Warmest since: 1944	2006
Dec 1946–Jan 1947 2-Month	32.5°F (0.3°C)	27.5°F (-2.5°C)	5.0°F	115th Coolest	Coolest since: 1946	1918
Dec 1946–Jan 1947 2-Month	32.5°F (0.3°C)	27.5°F (-2.5°C)	5.0°F	16th Warmest	Warmest since: 1934	1932
Nov 1946–Jan 1947 3-Month	36.1°F (2.3°C)	31.9°F (-0.1°C)	4.2°F	118th Coolest	Coolest since: 1946	1977
Nov 1946–Jan 1947 3-Month	36.1°F (2.3°C)	31.9°F (-0.1°C)	4.2°F	13th Warmest	Warmest since: 1932	1932
Oct 1946–Jan 1947 4-Month	41.6°F (5.3°C)	37.6°F (3.1°C)	4.0°F	124th Coolest	Coolest since: 1946	1977
Oct 1946–Jan 1947 4-Month	41.6°F (5.3°C)	37.6°F (3.1°C)	4.0°F	7th Warmest	Warmest since: 1932	1932
Sep 1946–Jan 1947 5-Month	46.4°F (8.0°C)	43.3°F (6.3°C)	3.1°F	118th Coolest	Coolest since: 1946	1977
Sep 1946–Jan 1947 5-Month	46.4°F (8.0°C)	43.3°F (6.3°C)	3.1°F	13th Warmest	Warmest since: 1939	1932
Aug 1946–Jan 1947 6-Month	50.3°F (10.2°C)	48.4°F (9.1°C)	1.9°F	110th Coolest	Coolest since: 1946	1977
Aug 1946–Jan 1947 6-Month	50.3°F (10.2°C)	48.4°F (9.1°C)	1.9°F	21st Warmest	Warmest since: 1942	1932
Jul 1946–Jan 1947 7-Month	53.9°F (12.2°C)	52.2°F (11.2°C)	1.7°F	106th Coolest	Coolest since: 1946	1977
Jul 1946–Jan 1947 7-Month	53.9°F (12.2°C)	52.2°F (11.2°C)	1.7°F	25th Warmest	Warmest since: 1942	1932
Jun 1946–Jan 1947 8-Month	56.1°F (13.4°C)	54.6°F (12.6°C)	1.5°F	99th Coolest	Coolest since: 1946	1918, 1977
Jun 1946–Jan 1947 8-Month	56.1°F (13.4°C)	54.6°F (12.6°C)	1.5°F	32nd Warmest	Warmest since: 1942	1932
May 1946–Jan 1947 9-Month	56.4°F (13.6°C)	55.5°F (13.1°C)	0.9°F	89th Coolest	Coolest since: 1946	1918
May 1946–Jan 1947 9-Month	56.4°F (13.6°C)	55.5°F (13.1°C)	0.9°F	42nd Warmest	Warmest since: 1942	1932
Apr 1946–Jan 1947 10-Month	56.2°F (13.4°C)	55.1°F (12.8°C)	1.1°F	95th Coolest	Coolest since: 1946	1918
Apr 1946–Jan 1947 10-Month	56.2°F (13.4°C)	55.1°F (12.8°C)	1.1°F	36th Warmest	Warmest since: 1942	1932
Mar 1946–Jan 1947 11-Month	55.8°F (13.2°C)	53.7°F (12.1°C)	2.1°F	116th Coolest	Coolest since: 1946	1918
Mar 1946–Jan 1947 11-Month	55.8°F (13.2°C)	53.7°F (12.1°C)	2.1°F	15th Warmest	Warmest since: 1939	2013
Feb 1946–Jan 1947 12-Month	53.9°F (12.2°C)	51.6°F (10.9°C)	2.3°F	119th Coolest	Coolest since: 1946	1918
Feb 1946–Jan 1947 12-Month	53.9°F (12.2°C)	51.6°F (10.9°C)	2.3°F	12th Warmest	Warmest since: 1939	2013
Aug 1945–Jan 1947 18-Month	51.7°F (10.9°C)	50.5°F (10.3°C)	1.2°F	100th Coolest	Coolest since: 1946	1905, 1918
	51.7°F (10.9°C)	50.5°F (10.3°C)	1.2°F	30th Warmest	Warmest since: 1942	2017
	Ties: 1934
Feb 1945–Jan 1947 24-Month	52.5°F (11.4°C)	51.6°F (10.9°C)	0.9°F	93rd Coolest	Coolest since: 1946	1918
	52.5°F (11.4°C)	51.6°F (10.9°C)	0.9°F	37th Warmest	Warmest since: 1942	2013
	Ties: 1942
Feb 1944–Jan 1947 36-Month	52.2°F (11.2°C)	51.6°F (10.9°C)	0.6°F	87th Coolest	Coolest since: 1946	1905
Feb 1944–Jan 1947 36-Month	52.2°F (11.2°C)	51.6°F (10.9°C)	0.6°F	42nd Warmest	Warmest since: 1943	2013
Feb 1943–Jan 1947 48-Month	52.0°F (11.1°C)	51.6°F (10.9°C)	0.4°F	74th Coolest	Coolest since: 1946	1905
Feb 1943–Jan 1947 48-Month	52.0°F (11.1°C)	51.6°F (10.9°C)	0.4°F	54th Warmest	Warmest since: 1945	2025
Feb 1942–Jan 1947 60-Month	51.9°F (11.1°C)	51.6°F (10.9°C)	0.3°F	70th Coolest	Coolest since: 1946	1906
Feb 1942–Jan 1947 60-Month	51.9°F (11.1°C)	51.6°F (10.9°C)	0.3°F	57th Warmest	Warmest since: 1945	2025

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2025, retrieved on March 26, 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 1947 Average Temperature Rankings

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