Climate at a Glance

Statewide Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of October 2019. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, January 1901

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
January 1901
1-Month
28.5°F
(-1.9°C)
25.3°F
(-3.7°C)
3.2°F
(1.8°C)
86th Coolest Coolest since: 1899 1977
40th Warmest Warmest since: 1900 2006
Ties: 1916
Dec 1900–Jan 1901
2-Month
29.6°F
(-1.3°C)
27.4°F
(-2.6°C)
2.2°F
(1.3°C)
78th Coolest Coolest since: 1900 1918
47th Warmest Warmest since: 1896 1932
Nov 1900–Jan 1901
3-Month
32.9°F
(0.5°C)
31.9°F
(-0.1°C)
1.0°F
(0.6°C)
70th Coolest Coolest since: 1899 1977
55th Warmest Warmest since: 1900 1932
Oct 1900–Jan 1901
4-Month
39.8°F
(4.3°C)
37.6°F
(3.1°C)
2.2°F
(1.2°C)
99th Coolest Coolest since: 1899 1977
26th Warmest Warmest since: 1900 1932
Ties: 2008
Sep 1900–Jan 1901
5-Month
45.5°F
(7.5°C)
43.3°F
(6.3°C)
2.2°F
(1.2°C)
103rd Coolest Coolest since: 1900 1977
22nd Warmest Warmest to Date 1932
Aug 1900–Jan 1901
6-Month
51.0°F
(10.6°C)
48.3°F
(9.1°C)
2.7°F
(1.5°C)
114th Coolest Coolest since: 1900 1977
11th Warmest Warmest to Date 1932
Ties: 1942
Jul 1900–Jan 1901
7-Month
54.4°F
(12.4°C)
52.2°F
(11.2°C)
2.2°F
(1.2°C)
113th Coolest Coolest since: 1900 1977
12th Warmest Warmest to Date 1932
Ties: 2008
Jun 1900–Jan 1901
8-Month
56.4°F
(13.6°C)
54.6°F
(12.6°C)
1.8°F
(1.0°C)
103rd Coolest Coolest since: 1900 1918, 1977
22nd Warmest Warmest to Date 1932
May 1900–Jan 1901
9-Month
57.2°F
(14.0°C)
55.4°F
(13.0°C)
1.8°F
(1.0°C)
104th Coolest Coolest since: 1900 1918
21st Warmest Warmest to Date 1932
Ties: 2000, 2019
Apr 1900–Jan 1901
10-Month
56.7°F
(13.7°C)
55.0°F
(12.8°C)
1.7°F
(0.9°C)
102nd Coolest Coolest since: 1900 1918
23rd Warmest Warmest to Date 1932
Mar 1900–Jan 1901
11-Month
54.7°F
(12.6°C)
53.7°F
(12.1°C)
1.0°F
(0.5°C)
90th Coolest Coolest since: 1900 1918
35th Warmest Warmest to Date 2013
Ties: 1960
Feb 1900–Jan 1901
12-Month
52.0°F
(11.1°C)
51.6°F
(10.9°C)
0.4°F
(0.2°C)
75th Coolest Coolest since: 1900 1918
50th Warmest Warmest to Date 2013
Ties: 1926, 1978
Aug 1899–Jan 1901
18-Month
51.3°F
(10.7°C)
50.5°F
(10.3°C)
0.8°F
(0.4°C)
90th Coolest Coolest since: 1900 1918
34th Warmest Warmest to Date 2017
Ties: 1915, 2016, 2019
Feb 1899–Jan 1901
24-Month
51.6°F
(10.9°C)
51.6°F
(10.9°C)
0.0°F
(0.0°C)
66th Coolest Coolest since: 1900 1918
58th Warmest Warmest since: 1898 2013
Ties: 1921, 1944, 1973, 1984
Feb 1898–Jan 1901
36-Month
51.4°F
(10.8°C)
51.6°F
(10.9°C)
-0.2°F
(-0.1°C)
44th Coolest Coolest since: 1900 1905
79th Warmest Warmest since: 1899 2013
Ties: 1898, 1911, 1928, 1931, 1946, 1959, 1984, 1986, 1995, 1996
Feb 1897–Jan 1901
48-Month
51.5°F
(10.8°C)
51.6°F
(10.9°C)
-0.1°F
(-0.1°C)
49th Coolest Coolest since: 1900 1905
73rd Warmest Warmest since: 1900 1934, 2002, 2019
Ties: 1900, 1926, 1946, 1966, 1986
Feb 1896–Jan 1901
60-Month
51.6°F
(10.9°C)
51.6°F
(10.9°C)
0.0°F
(0.0°C)
56th Coolest Coolest since: 1900 1906
65th Warmest Warmest to Date 1935, 2003

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published November 2019, retrieved on November 16, 2019 from https://www.ncdc.noaa.gov/cag/