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 January 2021. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, October 2018

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
October 2018
1-Month
54.2°F
(12.3°C)
54.6°F
(12.6°C)
-0.4°F
(-0.3°C)
54th Coolest Coolest since: 2012 1925
73rd Warmest Warmest since: 2017 1963
Ties: 2008
Sep–Oct 2018
2-Month
62.2°F
(16.8°C)
60.4°F
(15.8°C)
1.8°F
(1.0°C)
99th Coolest Coolest since: 2014 1917
28th Warmest Warmest since: 2017 1897, 2016
Ties: 1986, 2000
Aug–Oct 2018
3-Month
66.4°F
(19.1°C)
64.8°F
(18.2°C)
1.6°F
(0.9°C)
104th Coolest Coolest since: 2017 1917
23rd Warmest Warmest since: 2016 1947
Ties: 1920
Jul–Oct 2018
4-Month
68.6°F
(20.3°C)
67.5°F
(19.7°C)
1.1°F
(0.6°C)
99th Coolest Coolest since: 2017 1917
28th Warmest Warmest since: 2016 1936
Ties: 1922, 1930, 1933, 1940, 2002
Jun–Oct 2018
5-Month
69.8°F
(21.0°C)
68.2°F
(20.1°C)
1.6°F
(0.9°C)
104th Coolest Coolest since: 2017 1917
23rd Warmest Warmest since: 2016 1936
Ties: 1973
May–Oct 2018
6-Month
70.0°F
(21.1°C)
67.3°F
(19.6°C)
2.7°F
(1.5°C)
123rd Coolest Coolest since: 2017 1917
4th Warmest Warmest since: 2007 1936
Apr–Oct 2018
7-Month
66.4°F
(19.1°C)
65.0°F
(18.3°C)
1.4°F
(0.8°C)
107th Coolest Coolest since: 2017 1917
20th Warmest Warmest since: 2017 2010
Ties: 1938, 1986, 2017
Mar–Oct 2018
8-Month
63.0°F
(17.2°C)
61.9°F
(16.6°C)
1.1°F
(0.6°C)
101st Coolest Coolest since: 2015 1917
26th Warmest Warmest since: 2017 2012
Ties: 1914, 1939
Feb–Oct 2018
9-Month
59.5°F
(15.3°C)
58.2°F
(14.6°C)
1.3°F
(0.7°C)
103rd Coolest Coolest since: 2015 1917
24th Warmest Warmest since: 2017 2012
Ties: 1911
Jan–Oct 2018
10-Month
56.0°F
(13.3°C)
54.9°F
(12.7°C)
1.1°F
(0.6°C)
93rd Coolest Coolest since: 2015 1904
34th Warmest Warmest since: 2017 2012
Ties: 2020
Dec 2017–Oct 2018
11-Month
53.6°F
(12.0°C)
52.6°F
(11.4°C)
1.0°F
(0.6°C)
94th Coolest Coolest since: 2015 1904
32nd Warmest Warmest since: 2017 2012
Ties: 1911, 1946, 1949
Nov 2017–Oct 2018
12-Month
52.6°F
(11.4°C)
51.6°F
(10.9°C)
1.0°F
(0.5°C)
93rd Coolest Coolest since: 2015 1904
33rd Warmest Warmest since: 2017 2012
Ties: 1988
May 2017–Oct 2018
18-Month
57.8°F
(14.3°C)
56.9°F
(13.8°C)
0.9°F
(0.5°C)
97th Coolest Coolest since: 2015 1904
29th Warmest Warmest since: 2017 2012
Ties: 1941, 1988, 2011, 2013, 2020
Nov 2016–Oct 2018
24-Month
53.7°F
(12.1°C)
51.6°F
(10.9°C)
2.1°F
(1.2°C)
115th Coolest Coolest since: 2016 1905
10th Warmest Warmest since: 2017 2017
Ties: 2006
Nov 2015–Oct 2018
36-Month
54.4°F
(12.4°C)
51.6°F
(10.9°C)
2.8°F
(1.5°C)
123rd Coolest Coolest since: 2017 1904, 1979
1st Warmest Warmest to Date 2018
Nov 2014–Oct 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
2nd Warmest Warmest since: 2007 2019
Ties: 2007
Nov 2013–Oct 2018
60-Month
52.7°F
(11.5°C)
51.6°F
(10.9°C)
1.1°F
(0.6°C)
107th Coolest Coolest since: 2017 1905, 1906
15th Warmest Warmest since: 2016 2002, 2020
Ties: 1936, 2001, 2004, 2005, 2009, 2012

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published February 2021, retrieved on March 3, 2021 from https://www.ncdc.noaa.gov/cag/