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 2010

View Period (Months):All1234567891011121824364860
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  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
September 2010
1-Month
67.2°F
(19.6°C)
66.2°F
(19.0°C)
1.0°F
(0.6°C)
75th Coolest Coolest since: 2009 1918
52nd Warmest Warmest since: 2007 1925, 1933
Aug–Sep 2010
2-Month
72.0°F
(22.2°C)
69.8°F
(21.0°C)
2.2°F
(1.2°C)
104th Coolest Coolest since: 2009 1967
23rd Warmest Warmest since: 2007 1936
Ties: 1954
Jul–Sep 2010
3-Month
73.9°F
(23.3°C)
71.8°F
(22.1°C)
2.1°F
(1.2°C)
113th Coolest Coolest since: 2009 1967
14th Warmest Warmest since: 2005 1936
Ties: 1900, 2019
Jun–Sep 2010
4-Month
74.1°F
(23.4°C)
71.6°F
(22.0°C)
2.5°F
(1.4°C)
116th Coolest Coolest since: 2009 1915, 1924
11th Warmest Warmest since: 2005 1936
Ties: 2002
May–Sep 2010
5-Month
72.2°F
(22.3°C)
69.8°F
(21.0°C)
2.4°F
(1.3°C)
119th Coolest Coolest since: 2009 1924
8th Warmest Warmest since: 2007 1936
Ties: 1987, 1991, 2012
Apr–Sep 2010
6-Month
69.9°F
(21.1°C)
66.7°F
(19.3°C)
3.2°F
(1.8°C)
126th Coolest Coolest since: 2009 1907
1st Warmest Warmest to Date 2010
Mar–Sep 2010
7-Month
66.2°F
(19.0°C)
62.9°F
(17.2°C)
3.3°F
(1.8°C)
124th Coolest Coolest since: 2009 1924
3rd Warmest Warmest since: 1921 2012
Feb–Sep 2010
8-Month
61.1°F
(16.2°C)
58.6°F
(14.8°C)
2.5°F
(1.4°C)
118th Coolest Coolest since: 2009 1904
9th Warmest Warmest since: 2005 2012
Ties: 1954, 2005
Jan–Sep 2010
9-Month
56.7°F
(13.7°C)
54.9°F
(12.7°C)
1.8°F
(1.0°C)
106th Coolest Coolest since: 2009 1904, 1912
21st Warmest Warmest since: 2007 2012
Ties: 1955
Dec 2009–Sep 2010
10-Month
54.0°F
(12.2°C)
52.5°F
(11.4°C)
1.5°F
(0.8°C)
101st Coolest Coolest since: 2009 1904
25th Warmest Warmest since: 2007 2012
Ties: 1941
Nov 2009–Sep 2010
11-Month
53.3°F
(11.8°C)
51.3°F
(10.7°C)
2.0°F
(1.1°C)
110th Coolest Coolest since: 2009 1904
16th Warmest Warmest since: 2007 2012
Ties: 1953, 1983
Oct 2009–Sep 2010
12-Month
53.1°F
(11.7°C)
51.7°F
(10.9°C)
1.4°F
(0.8°C)
105th Coolest Coolest since: 2009 1904
21st Warmest Warmest since: 2007 2012
Apr 2009–Sep 2010
18-Month
57.3°F
(14.1°C)
56.7°F
(13.7°C)
0.6°F
(0.4°C)
86th Coolest Coolest since: 2009 1904, 1918
40th Warmest Warmest since: 2008 2012
Ties: 1901, 1949, 1957, 1964
Oct 2008–Sep 2010
24-Month
52.1°F
(11.2°C)
51.7°F
(10.9°C)
0.4°F
(0.3°C)
87th Coolest Coolest since: 2009 1979
38th Warmest Warmest since: 2008 2017
Ties: 1943, 1949, 1973, 1976, 1986
Oct 2007–Sep 2010
36-Month
52.0°F
(11.1°C)
51.6°F
(10.9°C)
0.4°F
(0.2°C)
80th Coolest Coolest since: 1998 1979
44th Warmest Warmest since: 2009 2018
Ties: 1931, 1949, 1974, 1976, 1990
Oct 2006–Sep 2010
48-Month
52.4°F
(11.3°C)
51.6°F
(10.9°C)
0.8°F
(0.4°C)
97th Coolest Coolest since: 2004 1905
26th Warmest Warmest since: 2009 2019
Ties: 1941, 1942, 1989, 1990, 2004, 2014
Oct 2005–Sep 2010
60-Month
52.6°F
(11.4°C)
51.6°F
(10.9°C)
1.0°F
(0.5°C)
99th Coolest Coolest since: 2000 1906
23rd Warmest Warmest since: 2009 2020
Ties: 1923

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/