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

Statewide Rankings

Parameter:

Year:

Month:

State:

Please note, Degree Days and Palmer Indices are not available for Alaska or Hawaii. 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

January 1966 Average Temperature Rankings

View Period (Months):

All

Download:

CSV JSON XML

Record Coolest

Bottom ⅒

Bottom ⅓

Normal

Top ⅓

Top ⅒

Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Coolest/Warmest Since	Record
January 1966 1-Month	20.6°F (-6.3°C)	25.3°F (-3.7°C)	-4.7°F	22nd Coolest	Coolest since: 1963	1977
January 1966 1-Month	20.6°F (-6.3°C)	25.3°F (-3.7°C)	-4.7°F	110th Warmest	Warmest since: 1965	2006
Dec 1965–Jan 1966 2-Month	29.0°F (-1.7°C)	27.5°F (-2.5°C)	1.5°F	73rd Coolest	Coolest since: 1965	1918
	29.0°F (-1.7°C)	27.5°F (-2.5°C)	1.5°F	58th Warmest	Warmest since: 1960	1932
	Ties: 1955
Nov 1965–Jan 1966 3-Month	33.9°F (1.1°C)	31.9°F (-0.1°C)	2.0°F	89th Coolest	Coolest since: 1965	1977
Nov 1965–Jan 1966 3-Month	33.9°F (1.1°C)	31.9°F (-0.1°C)	2.0°F	42nd Warmest	Warmest since: 1954	1932
Oct 1965–Jan 1966 4-Month	38.9°F (3.8°C)	37.6°F (3.1°C)	1.3°F	83rd Coolest	Coolest since: 1965	1977
	38.9°F (3.8°C)	37.6°F (3.1°C)	1.3°F	48th Warmest	Warmest since: 1964	1932
	Ties: 1957
Sep 1965–Jan 1966 5-Month	44.3°F (6.8°C)	43.3°F (6.3°C)	1.0°F	80th Coolest	Coolest since: 1965	1977
	44.3°F (6.8°C)	43.3°F (6.3°C)	1.0°F	51st Warmest	Warmest since: 1964	1932
	Ties: 1906, 1922
Aug 1965–Jan 1966 6-Month	48.9°F (9.4°C)	48.4°F (9.1°C)	0.5°F	75th Coolest	Coolest since: 1965	1977
Aug 1965–Jan 1966 6-Month	48.9°F (9.4°C)	48.4°F (9.1°C)	0.5°F	56th Warmest	Warmest since: 1964	1932
Jul 1965–Jan 1966 7-Month	52.4°F (11.3°C)	52.2°F (11.2°C)	0.2°F	59th Coolest	Coolest since: 1965	1977
Jul 1965–Jan 1966 7-Month	52.4°F (11.3°C)	52.2°F (11.2°C)	0.2°F	72nd Warmest	Warmest since: 1964	1932
Jun 1965–Jan 1966 8-Month	54.8°F (12.7°C)	54.6°F (12.6°C)	0.2°F	57th Coolest	Coolest since: 1965	1918, 1977
Jun 1965–Jan 1966 8-Month	54.8°F (12.7°C)	54.6°F (12.6°C)	0.2°F	74th Warmest	Warmest since: 1965	1932
May 1965–Jan 1966 9-Month	56.1°F (13.4°C)	55.5°F (13.1°C)	0.6°F	81st Coolest	Coolest since: 1965	1918
May 1965–Jan 1966 9-Month	56.1°F (13.4°C)	55.5°F (13.1°C)	0.6°F	50th Warmest	Warmest since: 1965	1932
Apr 1965–Jan 1966 10-Month	55.8°F (13.2°C)	55.1°F (12.8°C)	0.7°F	82nd Coolest	Coolest since: 1964	1918
	55.8°F (13.2°C)	55.1°F (12.8°C)	0.7°F	49th Warmest	Warmest since: 1965	1932
	Ties: 1907, 1933
Mar 1965–Jan 1966 11-Month	53.5°F (11.9°C)	53.7°F (12.1°C)	-0.2°F	50th Coolest	Coolest since: 1963	1918
Mar 1965–Jan 1966 11-Month	53.5°F (11.9°C)	53.7°F (12.1°C)	-0.2°F	81st Warmest	Warmest since: 1965	2013
Feb 1965–Jan 1966 12-Month	51.5°F (10.8°C)	51.6°F (10.9°C)	-0.1°F	55th Coolest	Coolest since: 1963	1918
Feb 1965–Jan 1966 12-Month	51.5°F (10.8°C)	51.6°F (10.9°C)	-0.1°F	76th Warmest	Warmest since: 1965	2013
Aug 1964–Jan 1966 18-Month	50.4°F (10.2°C)	50.5°F (10.3°C)	-0.1°F	49th Coolest	Coolest since: 1964	1905, 1918
Aug 1964–Jan 1966 18-Month	50.4°F (10.2°C)	50.5°F (10.3°C)	-0.1°F	81st Warmest	Warmest since: 1965	2017
Feb 1964–Jan 1966 24-Month	51.8°F (11.0°C)	51.6°F (10.9°C)	0.2°F	74th Coolest	Coolest since: 1964	1918
Feb 1964–Jan 1966 24-Month	51.8°F (11.0°C)	51.6°F (10.9°C)	0.2°F	56th Warmest	Warmest since: 1965	2013
Feb 1963–Jan 1966 36-Month	51.8°F (11.0°C)	51.6°F (10.9°C)	0.2°F	68th Coolest	Coolest since: 1965	1905
Feb 1963–Jan 1966 36-Month	51.8°F (11.0°C)	51.6°F (10.9°C)	0.2°F	61st Warmest	Warmest since: 1958	2013
Feb 1962–Jan 1966 48-Month	51.5°F (10.8°C)	51.6°F (10.9°C)	-0.1°F	49th Coolest	Coolest since: 1965	1905
Feb 1962–Jan 1966 48-Month	51.5°F (10.8°C)	51.6°F (10.9°C)	-0.1°F	79th Warmest	Warmest since: 1960	2025
Feb 1961–Jan 1966 60-Month	51.4°F (10.8°C)	51.6°F (10.9°C)	-0.2°F	43rd Coolest	Coolest since: 1965	1906
Feb 1961–Jan 1966 60-Month	51.4°F (10.8°C)	51.6°F (10.9°C)	-0.2°F	84th Warmest	Warmest since: 1960	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 1966 Average Temperature Rankings

Citing This Page

Success

Error