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 2020. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, October 2020

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
(1895-2020)
Warmest/Coolest
Since
Record
October 2020
1-Month
52.0°F
(11.1°C)
54.6°F
(12.6°C)
-2.6°F
(-1.5°C)
23rd Coolest Coolest since: 2009 1925
104th Warmest Warmest since: 2019 1963
Ties: 1977
Sep–Oct 2020
2-Month
58.8°F
(14.9°C)
60.4°F
(15.8°C)
-1.6°F
(-0.9°C)
25th Coolest Coolest since: 2012 1917
102nd Warmest Warmest since: 2019 1897, 2016
Ties: 1949
Aug–Oct 2020
3-Month
63.5°F
(17.5°C)
64.8°F
(18.2°C)
-1.3°F
(-0.7°C)
23rd Coolest Coolest since: 2009 1917
104th Warmest Warmest since: 2019 1947
Ties: 1909, 1951
Jul–Oct 2020
4-Month
66.9°F
(19.4°C)
67.5°F
(19.7°C)
-0.6°F
(-0.3°C)
47th Coolest Coolest since: 2014 1917
80th Warmest Warmest since: 2019 1936
Ties: 1985, 2008
Jun–Oct 2020
5-Month
68.2°F
(20.1°C)
68.2°F
(20.1°C)
0.0°F
(0.0°C)
67th Coolest Coolest since: 2014 1917
60th Warmest Warmest since: 2019 1936
Ties: 1898, 1906, 1916, 1935, 1961, 2008
May–Oct 2020
6-Month
67.0°F
(19.4°C)
67.3°F
(19.6°C)
-0.3°F
(-0.2°C)
53rd Coolest Coolest since: 2014 1917
74th Warmest Warmest since: 2019 1936
Ties: 1926, 1960
Apr–Oct 2020
7-Month
64.5°F
(18.1°C)
65.0°F
(18.3°C)
-0.5°F
(-0.2°C)
37th Coolest Coolest since: 2009 1917
90th Warmest Warmest since: 2019 2010
Ties: 1898, 1969, 2003, 2008
Mar–Oct 2020
8-Month
62.0°F
(16.7°C)
61.9°F
(16.6°C)
0.1°F
(0.1°C)
65th Coolest Coolest since: 2014 1917
62nd Warmest Warmest since: 2019 2012
Feb–Oct 2020
9-Month
58.6°F
(14.8°C)
58.2°F
(14.6°C)
0.4°F
(0.2°C)
78th Coolest Coolest since: 2015 1917
49th Warmest Warmest since: 2019 2012
Ties: 1897, 1952, 1964
Jan–Oct 2020
10-Month
56.0°F
(13.3°C)
55.0°F
(12.8°C)
1.0°F
(0.5°C)
93rd Coolest Coolest since: 2019 1904
34th Warmest Warmest since: 2018 2012
Ties: 2018
Dec 2019–Oct 2020
11-Month
54.1°F
(12.3°C)
52.6°F
(11.4°C)
1.5°F
(0.9°C)
101st Coolest Coolest since: 2019 1904
25th Warmest Warmest since: 2017 2012
Ties: 1922, 1939
Nov 2019–Oct 2020
12-Month
52.6°F
(11.4°C)
51.6°F
(10.9°C)
1.0°F
(0.5°C)
94th Coolest Coolest since: 2019 1904
32nd Warmest Warmest since: 2018 2012
Ties: 1988, 2018
May 2019–Oct 2020
18-Month
57.8°F
(14.3°C)
56.8°F
(13.8°C)
1.0°F
(0.5°C)
97th Coolest Coolest since: 2018 1904
29th Warmest Warmest since: 2019 2012
Ties: 1941, 1988, 2011, 2013, 2018
Nov 2018–Oct 2020
24-Month
52.3°F
(11.3°C)
51.6°F
(10.9°C)
0.7°F
(0.4°C)
90th Coolest Coolest since: 2019 1905
35th Warmest Warmest since: 2019 2017
Ties: 1947, 2019
Nov 2017–Oct 2020
36-Month
52.4°F
(11.3°C)
51.6°F
(10.9°C)
0.8°F
(0.4°C)
93rd Coolest Coolest since: 2016 1904, 1979
31st Warmest Warmest since: 2019 2018
Ties: 1940, 1987
Nov 2016–Oct 2020
48-Month
53.0°F
(11.7°C)
51.6°F
(10.9°C)
1.4°F
(0.8°C)
108th Coolest Coolest since: 2017 1905
15th Warmest Warmest since: 2019 2019
Ties: 1935
Nov 2015–Oct 2020
60-Month
53.5°F
(11.9°C)
51.6°F
(10.9°C)
1.9°F
(1.0°C)
121st Coolest Coolest since: 2019 1905, 1906
1st Warmest Warmest since: 2002 2002, 2020
Ties: 2002

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published January 2021, retrieved on January 26, 2021 from https://www.ncdc.noaa.gov/cag/