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 2002

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
September 2002
1-Month
69.3°F
(20.7°C)
66.2°F
(19.0°C)
3.1°F
(1.7°C)
105th Coolest Coolest since: 2001 1918
22nd Warmest Warmest since: 1998 1925, 1933
Aug–Sep 2002
2-Month
72.2°F
(22.3°C)
69.9°F
(21.1°C)
2.3°F
(1.2°C)
109th Coolest Coolest since: 2001 1967
18th Warmest Warmest since: 1998 1936
Ties: 1938, 1941, 1960, 2019
Jul–Sep 2002
3-Month
74.2°F
(23.4°C)
71.8°F
(22.1°C)
2.4°F
(1.3°C)
119th Coolest Coolest since: 2001 1967
8th Warmest Warmest since: 1988 1936
Ties: 1954, 2005
Jun–Sep 2002
4-Month
74.1°F
(23.4°C)
71.6°F
(22.0°C)
2.5°F
(1.4°C)
116th Coolest Coolest since: 2001 1915, 1924
11th Warmest Warmest since: 1988 1936
Ties: 2010
May–Sep 2002
5-Month
71.1°F
(21.7°C)
69.7°F
(20.9°C)
1.4°F
(0.8°C)
94th Coolest Coolest since: 2001 1924
33rd Warmest Warmest since: 1998 1936
Apr–Sep 2002
6-Month
68.2°F
(20.1°C)
66.7°F
(19.3°C)
1.5°F
(0.8°C)
103rd Coolest Coolest since: 2001 1907
24th Warmest Warmest since: 1998 2010
Ties: 1911, 1931, 1986
Mar–Sep 2002
7-Month
63.8°F
(17.7°C)
62.8°F
(17.1°C)
1.0°F
(0.6°C)
93rd Coolest Coolest since: 2001 1924
34th Warmest Warmest since: 2000 2012
Ties: 1973, 1985
Feb–Sep 2002
8-Month
60.2°F
(15.7°C)
58.7°F
(14.8°C)
1.5°F
(0.9°C)
109th Coolest Coolest since: 2001 1904
18th Warmest Warmest since: 2000 2012
Ties: 1931, 1953, 1986, 1999, 2007, 2018
Jan–Sep 2002
9-Month
57.2°F
(14.0°C)
54.9°F
(12.7°C)
2.3°F
(1.3°C)
114th Coolest Coolest since: 2001 1904, 1912
13th Warmest Warmest since: 1998 2012
Dec 2001–Sep 2002
10-Month
55.1°F
(12.8°C)
52.4°F
(11.3°C)
2.7°F
(1.5°C)
119th Coolest Coolest since: 2001 1904
7th Warmest Warmest since: 1998 2012
Nov 2001–Sep 2002
11-Month
54.6°F
(12.6°C)
51.3°F
(10.7°C)
3.3°F
(1.9°C)
122nd Coolest Coolest since: 2001 1904
4th Warmest Warmest since: 1921 2012
Oct 2001–Sep 2002
12-Month
54.5°F
(12.5°C)
51.6°F
(10.9°C)
2.9°F
(1.6°C)
121st Coolest Coolest since: 2001 1904
5th Warmest Warmest since: 1921 2012
Apr 2001–Sep 2002
18-Month
59.0°F
(15.0°C)
56.7°F
(13.7°C)
2.3°F
(1.3°C)
122nd Coolest Coolest since: 2001 1904, 1918
4th Warmest Warmest since: 1932 2012
Ties: 1932
Oct 2000–Sep 2002
24-Month
52.9°F
(11.6°C)
51.6°F
(10.9°C)
1.3°F
(0.7°C)
104th Coolest Coolest since: 2001 1979
21st Warmest Warmest since: 2000 2017
Ties: 1934, 1942
Oct 1999–Sep 2002
36-Month
53.3°F
(11.8°C)
51.6°F
(10.9°C)
1.7°F
(0.9°C)
113th Coolest Coolest since: 2001 1979
11th Warmest Warmest since: 2000 2018
Ties: 2019
Oct 1998–Sep 2002
48-Month
53.4°F
(11.9°C)
51.6°F
(10.9°C)
1.8°F
(1.0°C)
119th Coolest Coolest since: 2001 1905
4th Warmest Warmest to Date 2019
Ties: 2013
Oct 1997–Sep 2002
60-Month
53.5°F
(11.9°C)
51.5°F
(10.8°C)
2.0°F
(1.1°C)
120th Coolest Coolest since: 2001 1906
2nd Warmest Warmest to Date 2020

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published October 2020, retrieved on October 28, 2020 from https://www.ncdc.noaa.gov/cag/