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 September 2020. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, September 2012

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  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
September 2012
1-Month
64.9°F
(18.3°C)
66.2°F
(19.0°C)
-1.3°F
(-0.7°C)
38th Coolest Coolest since: 2011 1918
89th Warmest Warmest since: 2010 1925, 1933
Ties: 1903
Aug–Sep 2012
2-Month
69.2°F
(20.7°C)
69.8°F
(21.0°C)
-0.6°F
(-0.3°C)
42nd Coolest Coolest since: 2011 1967
85th Warmest Warmest since: 2011 1936
Ties: 1923, 1934, 1943, 1969, 2006, 2011, 2014, 2020
Jul–Sep 2012
3-Month
73.4°F
(23.0°C)
71.7°F
(22.1°C)
1.7°F
(0.9°C)
101st Coolest Coolest since: 2011 1967
26th Warmest Warmest since: 2010 1936
Jun–Sep 2012
4-Month
73.2°F
(22.9°C)
71.6°F
(22.0°C)
1.6°F
(0.9°C)
103rd Coolest Coolest since: 2011 1915, 1924
24th Warmest Warmest since: 2010 1936
Ties: 1987, 1998, 2019
May–Sep 2012
5-Month
72.2°F
(22.3°C)
69.7°F
(20.9°C)
2.5°F
(1.4°C)
119th Coolest Coolest since: 2011 1924
8th Warmest Warmest since: 2010 1936
Ties: 1987, 1991, 2010
Apr–Sep 2012
6-Month
69.3°F
(20.7°C)
66.7°F
(19.3°C)
2.6°F
(1.4°C)
121st Coolest Coolest since: 2011 1907
6th Warmest Warmest since: 2010 2010
Mar–Sep 2012
7-Month
67.3°F
(19.6°C)
62.9°F
(17.2°C)
4.4°F
(2.4°C)
126th Coolest Coolest since: 2011 1924
1st Warmest Warmest to Date 2012
Feb–Sep 2012
8-Month
63.4°F
(17.4°C)
58.7°F
(14.8°C)
4.7°F
(2.6°C)
126th Coolest Coolest since: 2011 1904
1st Warmest Warmest to Date 2012
Jan–Sep 2012
9-Month
59.9°F
(15.5°C)
55.0°F
(12.8°C)
4.9°F
(2.7°C)
126th Coolest Coolest since: 2011 1904, 1912
1st Warmest Warmest to Date 2012
Dec 2011–Sep 2012
10-Month
57.5°F
(14.2°C)
52.4°F
(11.3°C)
5.1°F
(2.9°C)
125th Coolest Coolest since: 2011 1904
1st Warmest Warmest to Date 2012
Nov 2011–Sep 2012
11-Month
56.4°F
(13.6°C)
51.3°F
(10.7°C)
5.1°F
(2.9°C)
125th Coolest Coolest since: 2011 1904
1st Warmest Warmest to Date 2012
Oct 2011–Sep 2012
12-Month
56.3°F
(13.5°C)
51.6°F
(10.9°C)
4.7°F
(2.6°C)
125th Coolest Coolest since: 2011 1904
1st Warmest Warmest to Date 2012
Apr 2011–Sep 2012
18-Month
60.1°F
(15.6°C)
56.6°F
(13.7°C)
3.5°F
(1.9°C)
125th Coolest Coolest since: 2011 1904, 1918
1st Warmest Warmest to Date 2012
Oct 2010–Sep 2012
24-Month
54.2°F
(12.3°C)
51.6°F
(10.9°C)
2.6°F
(1.4°C)
123rd Coolest Coolest since: 2011 1979
2nd Warmest Warmest to Date 2017
Ties: 2013
Oct 2009–Sep 2012
36-Month
53.8°F
(12.1°C)
51.6°F
(10.9°C)
2.2°F
(1.2°C)
121st Coolest Coolest since: 2011 1979
3rd Warmest Warmest since: 2007 2018
Ties: 2007, 2017
Oct 2008–Sep 2012
48-Month
53.1°F
(11.7°C)
51.6°F
(10.9°C)
1.5°F
(0.8°C)
113th Coolest Coolest since: 2011 1905
10th Warmest Warmest since: 2008 2019
Ties: 1933, 1935, 1955, 2000, 2005
Oct 2007–Sep 2012
60-Month
52.9°F
(11.6°C)
51.6°F
(10.9°C)
1.3°F
(0.7°C)
113th Coolest Coolest since: 2011 1906
9th Warmest Warmest since: 2008 2020
Ties: 2003, 2013

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published October 2020, retrieved on October 30, 2020 from https://www.ncdc.noaa.gov/cag/