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


Illinois

Average Temperature Rankings, December 2017

View Period (Months):All1234567891011121824364860
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  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
December 2017
1-Month
29.8°F
(-1.2°C)
29.4°F
(-1.4°C)
0.4°F
(0.2°C)
56th Coolest Coolest since: 2016 1983
70th Warmest Warmest since: 2015 2015
Ties: 1930
Nov–Dec 2017
2-Month
35.8°F
(2.1°C)
35.1°F
(1.7°C)
0.7°F
(0.4°C)
69th Coolest Coolest since: 2014 1950
57th Warmest Warmest since: 2016 2015
Ties: 2019
Oct–Dec 2017
3-Month
43.3°F
(6.3°C)
41.7°F
(5.4°C)
1.6°F
(0.9°C)
91st Coolest Coolest since: 2014 1976
35th Warmest Warmest since: 2016 1931
Ties: 1947, 1990
Sep–Dec 2017
4-Month
49.6°F
(9.8°C)
47.7°F
(8.7°C)
1.9°F
(1.1°C)
102nd Coolest Coolest since: 2014 1976
24th Warmest Warmest since: 2016 1931
Ties: 1927
Aug–Dec 2017
5-Month
53.8°F
(12.1°C)
52.9°F
(11.6°C)
0.9°F
(0.5°C)
85th Coolest Coolest since: 2014 1976
41st Warmest Warmest since: 2016 1931
Ties: 1920, 1970, 1987, 2012, 2018
Jul–Dec 2017
6-Month
57.5°F
(14.2°C)
56.6°F
(13.7°C)
0.9°F
(0.5°C)
83rd Coolest Coolest since: 2014 1976
43rd Warmest Warmest since: 2016 1931
Ties: 1899, 1988
Jun–Dec 2017
7-Month
59.7°F
(15.4°C)
58.8°F
(14.9°C)
0.9°F
(0.5°C)
88th Coolest Coolest since: 2014 1917
38th Warmest Warmest since: 2016 1931
Ties: 1899, 1923, 2006, 2019
May–Dec 2017
8-Month
60.0°F
(15.6°C)
59.2°F
(15.1°C)
0.8°F
(0.5°C)
83rd Coolest Coolest since: 2014 1917
43rd Warmest Warmest since: 2016 1931
Ties: 1930, 2006
Apr–Dec 2017
9-Month
59.6°F
(15.3°C)
58.4°F
(14.7°C)
1.2°F
(0.6°C)
98th Coolest Coolest since: 2014 1917
28th Warmest Warmest since: 2016 1931
Ties: 1939
Mar–Dec 2017
10-Month
58.0°F
(14.4°C)
56.5°F
(13.6°C)
1.5°F
(0.8°C)
107th Coolest Coolest since: 2014 1917
19th Warmest Warmest since: 2016 2012
Ties: 1953, 1999
Feb–Dec 2017
11-Month
56.4°F
(13.6°C)
54.0°F
(12.2°C)
2.4°F
(1.4°C)
117th Coolest Coolest since: 2015 1917
9th Warmest Warmest since: 2016 2012
Jan–Dec 2017
12-Month
54.4°F
(12.4°C)
51.6°F
(10.9°C)
2.8°F
(1.5°C)
120th Coolest Coolest since: 2015 1917
6th Warmest Warmest since: 2016 2012
Jul 2016–Dec 2017
18-Month
56.2°F
(13.4°C)
53.3°F
(11.8°C)
2.9°F
(1.6°C)
122nd Coolest Coolest since: 2015 1904
3rd Warmest Warmest since: 2016 2012
Jan 2016–Dec 2017
24-Month
54.6°F
(12.6°C)
51.7°F
(10.9°C)
2.9°F
(1.7°C)
124th Coolest Coolest since: 2016 1904, 1979
1st Warmest Warmest to Date 2017
Jan 2015–Dec 2017
36-Month
54.0°F
(12.2°C)
51.6°F
(10.9°C)
2.4°F
(1.3°C)
123rd Coolest Coolest since: 2016 1905
1st Warmest Warmest to Date 2017
Jan 2014–Dec 2017
48-Month
52.9°F
(11.6°C)
51.6°F
(10.9°C)
1.3°F
(0.7°C)
108th Coolest Coolest since: 2016 1905
15th Warmest Warmest since: 2013 2001, 2018
Jan 2013–Dec 2017
60-Month
52.5°F
(11.4°C)
51.6°F
(10.9°C)
0.9°F
(0.5°C)
98th Coolest Coolest since: 2015 1905
24th Warmest Warmest since: 2016 2002
Ties: 1923, 1955, 2014, 2015

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published January 2020, retrieved on January 26, 2020 from https://www.ncdc.noaa.gov/cag/