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 November 2019. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, December 2018

View Period (Months):All1234567891011121824364860
Download: xml csv json
  • Record Coolest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2018)
Warmest/Coolest
Since
Record
December 2018
1-Month
34.4°F
(1.3°C)
29.4°F
(-1.4°C)
5.0°F
(2.7°C)
105th Coolest Coolest since: 2017 1983
20th Warmest Warmest since: 2015 2015
Nov–Dec 2018
2-Month
35.0°F
(1.7°C)
35.1°F
(1.7°C)
-0.1°F
(0.0°C)
52nd Coolest Coolest since: 2014 1950
73rd Warmest Warmest since: 2017 2015
Ties: 1900, 1906, 1920
Oct–Dec 2018
3-Month
41.4°F
(5.2°C)
41.6°F
(5.3°C)
-0.2°F
(-0.1°C)
57th Coolest Coolest since: 2014 1976
68th Warmest Warmest since: 2017 1931
Ties: 1964, 2010
Sep–Dec 2018
4-Month
48.6°F
(9.2°C)
47.7°F
(8.7°C)
0.9°F
(0.5°C)
75th Coolest Coolest since: 2014 1976
50th Warmest Warmest since: 2017 1931
Ties: 1979
Aug–Dec 2018
5-Month
53.8°F
(12.1°C)
52.9°F
(11.6°C)
0.9°F
(0.5°C)
85th Coolest Coolest since: 2017 1976
40th Warmest Warmest since: 2017 1931
Ties: 1920, 1970, 1987, 2012, 2017
Jul–Dec 2018
6-Month
57.4°F
(14.1°C)
56.7°F
(13.7°C)
0.7°F
(0.4°C)
80th Coolest Coolest since: 2014 1976
45th Warmest Warmest since: 2017 1931
Ties: 1897, 1908, 1918, 1948, 1975, 1990
Jun–Dec 2018
7-Month
59.9°F
(15.5°C)
58.8°F
(14.9°C)
1.1°F
(0.6°C)
94th Coolest Coolest since: 2017 1917
31st Warmest Warmest since: 2016 1931
Ties: 1947, 1949
May–Dec 2018
8-Month
61.2°F
(16.2°C)
59.2°F
(15.1°C)
2.0°F
(1.1°C)
112th Coolest Coolest since: 2017 1917
13th Warmest Warmest since: 2016 1931
Ties: 1921, 1987
Apr–Dec 2018
9-Month
59.4°F
(15.2°C)
58.3°F
(14.6°C)
1.1°F
(0.6°C)
93rd Coolest Coolest since: 2014 1917
32nd Warmest Warmest since: 2017 1931
Ties: 1930, 1949, 1956, 1986
Mar–Dec 2018
10-Month
57.4°F
(14.1°C)
56.5°F
(13.6°C)
0.9°F
(0.5°C)
88th Coolest Coolest since: 2014 1917
37th Warmest Warmest since: 2017 2012
Ties: 1949
Feb–Dec 2018
11-Month
55.1°F
(12.8°C)
54.0°F
(12.2°C)
1.1°F
(0.6°C)
99th Coolest Coolest since: 2014 1917
26th Warmest Warmest since: 2017 2012
Ties: 1933, 1934, 1939, 1956, 1986, 1990, 2004
Jan–Dec 2018
12-Month
52.5°F
(11.4°C)
51.6°F
(10.9°C)
0.9°F
(0.5°C)
88th Coolest Coolest since: 2014 1917
37th Warmest Warmest since: 2017 2012
Ties: 1964
Jul 2017–Dec 2018
18-Month
54.2°F
(12.3°C)
53.4°F
(11.9°C)
0.8°F
(0.4°C)
95th Coolest Coolest since: 2015 1904
29th Warmest Warmest since: 2017 2012
Ties: 1913, 1933, 1956
Jan 2017–Dec 2018
24-Month
53.4°F
(11.9°C)
51.6°F
(10.9°C)
1.8°F
(1.0°C)
110th Coolest Coolest since: 2015 1904, 1979
14th Warmest Warmest since: 2017 2017
Ties: 1934, 2013
Jan 2016–Dec 2018
36-Month
53.9°F
(12.2°C)
51.6°F
(10.9°C)
2.3°F
(1.3°C)
121st Coolest Coolest since: 2016 1905
2nd Warmest Warmest since: 2017 2017
Ties: 2012
Jan 2015–Dec 2018
48-Month
53.6°F
(12.0°C)
51.6°F
(10.9°C)
2.0°F
(1.1°C)
121st Coolest Coolest since: 2017 1905
1st Warmest Warmest since: 2001 2001, 2018
Ties: 2001
Jan 2014–Dec 2018
60-Month
52.8°F
(11.6°C)
51.6°F
(10.9°C)
1.2°F
(0.7°C)
109th Coolest Coolest since: 2017 1905
12th Warmest Warmest since: 2016 2002
Ties: 1991, 2003, 2012, 2016

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published December 2019, retrieved on December 13, 2019 from https://www.ncdc.noaa.gov/cag/