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 2020. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, December 2015

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
December 2015
1-Month
41.1°F
(5.1°C)
29.4°F
(-1.4°C)
11.7°F
(6.5°C)
125th Coolest Coolest since: 2014 1983
1st Warmest Warmest to Date 2015
Nov–Dec 2015
2-Month
43.8°F
(6.6°C)
35.1°F
(1.7°C)
8.7°F
(4.9°C)
125th Coolest Coolest since: 2014 1950
1st Warmest Warmest to Date 2015
Oct–Dec 2015
3-Month
47.9°F
(8.8°C)
41.6°F
(5.3°C)
6.3°F
(3.5°C)
124th Coolest Coolest since: 2014 1976
2nd Warmest Warmest since: 1931 1931
Sep–Dec 2015
4-Month
53.5°F
(11.9°C)
47.7°F
(8.7°C)
5.8°F
(3.2°C)
124th Coolest Coolest since: 2014 1976
2nd Warmest Warmest since: 1931 1931
Aug–Dec 2015
5-Month
57.2°F
(14.0°C)
52.9°F
(11.6°C)
4.3°F
(2.4°C)
124th Coolest Coolest since: 2014 1976
2nd Warmest Warmest since: 1931 1931
Jul–Dec 2015
6-Month
60.0°F
(15.6°C)
56.6°F
(13.7°C)
3.4°F
(1.9°C)
124th Coolest Coolest since: 2014 1976
2nd Warmest Warmest since: 1931 1931
Jun–Dec 2015
7-Month
61.7°F
(16.5°C)
58.8°F
(14.9°C)
2.9°F
(1.6°C)
123rd Coolest Coolest since: 2014 1917
3rd Warmest Warmest since: 1931 1931
May–Dec 2015
8-Month
62.1°F
(16.7°C)
59.2°F
(15.1°C)
2.9°F
(1.6°C)
123rd Coolest Coolest since: 2014 1917
3rd Warmest Warmest since: 1998 1931
Apr–Dec 2015
9-Month
61.2°F
(16.2°C)
58.3°F
(14.6°C)
2.9°F
(1.6°C)
124th Coolest Coolest since: 2014 1917
2nd Warmest Warmest since: 1941 1931
Ties: 1941
Mar–Dec 2015
10-Month
58.9°F
(14.9°C)
56.5°F
(13.6°C)
2.4°F
(1.3°C)
119th Coolest Coolest since: 2014 1917
7th Warmest Warmest since: 2012 2012
Feb–Dec 2015
11-Month
55.3°F
(12.9°C)
54.0°F
(12.2°C)
1.3°F
(0.7°C)
103rd Coolest Coolest since: 2014 1917
23rd Warmest Warmest since: 2012 2012
Ties: 1977
Jan–Dec 2015
12-Month
52.9°F
(11.6°C)
51.6°F
(10.9°C)
1.3°F
(0.7°C)
99th Coolest Coolest since: 2014 1917
27th Warmest Warmest since: 2012 2012
Ties: 2010
Jul 2014–Dec 2015
18-Month
53.7°F
(12.1°C)
53.3°F
(11.8°C)
0.4°F
(0.3°C)
77th Coolest Coolest since: 2014 1904
48th Warmest Warmest since: 2012 2012
Ties: 1973, 1974, 1992, 1995, 2003
Jan 2014–Dec 2015
24-Month
51.2°F
(10.7°C)
51.6°F
(10.9°C)
-0.4°F
(-0.2°C)
37th Coolest Coolest since: 2014 1904, 1979
88th Warmest Warmest since: 2013 2017
Ties: 1927, 1930, 1937, 1976, 1982, 1985, 2009
Jan 2013–Dec 2015
36-Month
51.1°F
(10.6°C)
51.6°F
(10.9°C)
-0.5°F
(-0.3°C)
26th Coolest Coolest since: 1997 1905
98th Warmest Warmest since: 2014 2017
Ties: 1897, 1929, 1961
Jan 2012–Dec 2015
48-Month
52.3°F
(11.3°C)
51.6°F
(10.9°C)
0.7°F
(0.4°C)
86th Coolest Coolest since: 2011 1905
37th Warmest Warmest since: 2014 2001, 2018
Ties: 1921, 1932, 1987
Jan 2011–Dec 2015
60-Month
52.5°F
(11.4°C)
51.6°F
(10.9°C)
0.9°F
(0.5°C)
98th Coolest Coolest since: 2014 1905
24th Warmest Warmest since: 2014 2002
Ties: 1923, 1955, 2014, 2017

Citing This Page

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