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 2005

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
September 2005
1-Month
70.7°F
(21.5°C)
66.2°F
(19.0°C)
4.5°F
(2.5°C)
118th Coolest Coolest since: 2004 1918
9th Warmest Warmest since: 1998 1925, 1933
Aug–Sep 2005
2-Month
73.1°F
(22.8°C)
69.8°F
(21.0°C)
3.3°F
(1.8°C)
121st Coolest Coolest since: 2004 1967
6th Warmest Warmest since: 1947 1936
Jul–Sep 2005
3-Month
74.2°F
(23.4°C)
71.7°F
(22.1°C)
2.5°F
(1.3°C)
119th Coolest Coolest since: 2004 1967
8th Warmest Warmest since: 2002 1936
Ties: 1954, 2002
Jun–Sep 2005
4-Month
74.4°F
(23.6°C)
71.6°F
(22.0°C)
2.8°F
(1.6°C)
121st Coolest Coolest since: 2004 1915, 1924
6th Warmest Warmest since: 1954 1936
Ties: 1934
May–Sep 2005
5-Month
71.7°F
(22.1°C)
69.7°F
(20.9°C)
2.0°F
(1.2°C)
110th Coolest Coolest since: 2004 1924
17th Warmest Warmest since: 1998 1936
Ties: 1914, 1944
Apr–Sep 2005
6-Month
69.0°F
(20.6°C)
66.7°F
(19.3°C)
2.3°F
(1.3°C)
118th Coolest Coolest since: 2004 1907
9th Warmest Warmest since: 1991 2010
Ties: 1933, 1977, 1987
Mar–Sep 2005
7-Month
64.7°F
(18.2°C)
62.9°F
(17.2°C)
1.8°F
(1.0°C)
113th Coolest Coolest since: 2004 1924
14th Warmest Warmest since: 1998 2012
Ties: 1933, 1934, 1938, 1986
Feb–Sep 2005
8-Month
61.1°F
(16.2°C)
58.6°F
(14.8°C)
2.5°F
(1.4°C)
118th Coolest Coolest since: 2004 1904
9th Warmest Warmest since: 1998 2012
Ties: 1954, 2010
Jan–Sep 2005
9-Month
57.6°F
(14.2°C)
55.0°F
(12.8°C)
2.6°F
(1.4°C)
120th Coolest Coolest since: 2004 1904, 1912
7th Warmest Warmest since: 1998 2012
Ties: 1991
Dec 2004–Sep 2005
10-Month
54.9°F
(12.7°C)
52.4°F
(11.3°C)
2.5°F
(1.4°C)
118th Coolest Coolest since: 2004 1904
8th Warmest Warmest since: 2002 2012
Ties: 1991
Nov 2004–Sep 2005
11-Month
54.1°F
(12.3°C)
51.4°F
(10.8°C)
2.7°F
(1.5°C)
118th Coolest Coolest since: 2004 1904
8th Warmest Warmest since: 2002 2012
Ties: 1932
Oct 2004–Sep 2005
12-Month
54.2°F
(12.3°C)
51.6°F
(10.9°C)
2.6°F
(1.4°C)
119th Coolest Coolest since: 2004 1904
7th Warmest Warmest since: 2002 2012
Ties: 1998
Apr 2004–Sep 2005
18-Month
58.3°F
(14.6°C)
56.7°F
(13.7°C)
1.6°F
(0.9°C)
113th Coolest Coolest since: 2004 1904, 1918
13th Warmest Warmest since: 2002 2012
Ties: 1922, 1934, 2007
Oct 2003–Sep 2005
24-Month
53.4°F
(11.9°C)
51.6°F
(10.9°C)
1.8°F
(1.0°C)
111th Coolest Coolest since: 2004 1979
14th Warmest Warmest since: 2000 2017
Oct 2002–Sep 2005
36-Month
52.6°F
(11.4°C)
51.6°F
(10.9°C)
1.0°F
(0.5°C)
98th Coolest Coolest since: 2003 1979
26th Warmest Warmest since: 2004 2018
Ties: 1922, 2020
Oct 2001–Sep 2005
48-Month
53.1°F
(11.7°C)
51.6°F
(10.9°C)
1.5°F
(0.8°C)
113th Coolest Coolest since: 2004 1905
10th Warmest Warmest since: 2002 2019
Ties: 1933, 1935, 1955, 2000, 2012
Oct 2000–Sep 2005
60-Month
52.7°F
(11.5°C)
51.6°F
(10.9°C)
1.1°F
(0.6°C)
106th Coolest Coolest since: 2004 1906
16th Warmest Warmest since: 2004 2020
Ties: 1933, 1936, 1956, 2001, 2004, 2018

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published October 2020, retrieved on October 21, 2020 from https://www.ncdc.noaa.gov/cag/