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, October 2015

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
October 2015
1-Month
56.0°F
(13.3°C)
54.6°F
(12.6°C)
1.4°F
(0.7°C)
87th Coolest Coolest since: 2014 1925
39th Warmest Warmest since: 2010 1963
Sep–Oct 2015
2-Month
63.2°F
(17.3°C)
60.4°F
(15.8°C)
2.8°F
(1.5°C)
109th Coolest Coolest since: 2014 1917
17th Warmest Warmest since: 2007 1897, 2016
Ties: 2005
Aug–Oct 2015
3-Month
66.1°F
(18.9°C)
64.7°F
(18.2°C)
1.4°F
(0.7°C)
99th Coolest Coolest since: 2014 1917
27th Warmest Warmest since: 2010 1947
Ties: 1899, 1919, 2019
Jul–Oct 2015
4-Month
68.1°F
(20.1°C)
67.4°F
(19.7°C)
0.7°F
(0.4°C)
80th Coolest Coolest since: 2014 1917
46th Warmest Warmest since: 2012 1936
Ties: 1959
Jun–Oct 2015
5-Month
68.8°F
(20.4°C)
68.2°F
(20.1°C)
0.6°F
(0.3°C)
77th Coolest Coolest since: 2014 1917
49th Warmest Warmest since: 2012 1936
May–Oct 2015
6-Month
68.2°F
(20.1°C)
67.2°F
(19.6°C)
1.0°F
(0.5°C)
94th Coolest Coolest since: 2014 1917
32nd Warmest Warmest since: 2012 1936
Ties: 1913, 1919, 1963, 2019
Apr–Oct 2015
7-Month
66.2°F
(19.0°C)
65.0°F
(18.3°C)
1.2°F
(0.7°C)
100th Coolest Coolest since: 2014 1917
26th Warmest Warmest since: 2012 2010
Ties: 1959
Mar–Oct 2015
8-Month
62.7°F
(17.1°C)
61.8°F
(16.6°C)
0.9°F
(0.5°C)
89th Coolest Coolest since: 2014 1917
37th Warmest Warmest since: 2012 2012
Ties: 1930
Feb–Oct 2015
9-Month
57.9°F
(14.4°C)
58.2°F
(14.6°C)
-0.3°F
(-0.2°C)
50th Coolest Coolest since: 2014 1917
76th Warmest Warmest since: 2012 2012
Ties: 1943, 1961
Jan–Oct 2015
10-Month
54.7°F
(12.6°C)
54.9°F
(12.7°C)
-0.2°F
(-0.1°C)
54th Coolest Coolest since: 2014 1904
72nd Warmest Warmest since: 2013 2012
Ties: 1906, 1943, 1957, 1974
Dec 2014–Oct 2015
11-Month
52.8°F
(11.6°C)
52.6°F
(11.4°C)
0.2°F
(0.2°C)
72nd Coolest Coolest since: 2014 1904
53rd Warmest Warmest since: 2013 2012
Ties: 1925, 1957, 1971, 1981, 1985
Nov 2014–Oct 2015
12-Month
51.3°F
(10.7°C)
51.7°F
(10.9°C)
-0.4°F
(-0.2°C)
46th Coolest Coolest since: 2014 1904
79th Warmest Warmest since: 2013 2012
Ties: 1909, 1927, 1943, 2008
May 2014–Oct 2015
18-Month
56.4°F
(13.6°C)
56.8°F
(13.8°C)
-0.4°F
(-0.2°C)
37th Coolest Coolest since: 2014 1904
88th Warmest Warmest since: 2013 2012
Ties: 1903, 1943, 1952, 1961
Nov 2013–Oct 2015
24-Month
50.2°F
(10.1°C)
51.6°F
(10.9°C)
-1.4°F
(-0.8°C)
6th Coolest Coolest since: 1979 1905
118th Warmest Warmest since: 2014 2017
Ties: 1917
Nov 2012–Oct 2015
36-Month
50.9°F
(10.5°C)
51.6°F
(10.9°C)
-0.7°F
(-0.4°C)
17th Coolest Coolest since: 1981 1904, 1979
106th Warmest Warmest since: 2014 2018
Ties: 1926, 1969
Nov 2011–Oct 2015
48-Month
52.2°F
(11.2°C)
51.6°F
(10.9°C)
0.6°F
(0.3°C)
86th Coolest Coolest since: 2011 1905
36th Warmest Warmest since: 2014 2019
Ties: 1923, 1939, 1944
Nov 2010–Oct 2015
60-Month
52.1°F
(11.2°C)
51.5°F
(10.8°C)
0.6°F
(0.4°C)
78th Coolest Coolest since: 1998 1905, 1906
43rd Warmest Warmest since: 2014 2002
Ties: 1937, 1943, 1988, 1993

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published November 2019, retrieved on November 11, 2019 from https://www.ncdc.noaa.gov/cag/