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


Illinois

Average Temperature Rankings, September 2003

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
September 2003
1-Month
64.1°F
(17.8°C)
66.2°F
(19.0°C)
-2.1°F
(-1.2°C)
22nd Coolest Coolest since: 1995 1918
104th Warmest Warmest since: 2002 1925, 1933
Ties: 1917
Aug–Sep 2003
2-Month
69.7°F
(20.9°C)
69.8°F
(21.0°C)
-0.1°F
(-0.1°C)
61st Coolest Coolest since: 2001 1967
65th Warmest Warmest since: 2002 1936
Ties: 1958
Jul–Sep 2003
3-Month
71.4°F
(21.9°C)
71.7°F
(22.1°C)
-0.3°F
(-0.2°C)
51st Coolest Coolest since: 2000 1967
75th Warmest Warmest since: 2002 1936
Ties: 1964, 1972, 2000
Jun–Sep 2003
4-Month
70.5°F
(21.4°C)
71.6°F
(22.0°C)
-1.1°F
(-0.6°C)
28th Coolest Coolest since: 1996 1915, 1924
98th Warmest Warmest since: 2002 1936
Ties: 1989
May–Sep 2003
5-Month
68.6°F
(20.3°C)
69.7°F
(20.9°C)
-1.1°F
(-0.6°C)
26th Coolest Coolest since: 1997 1924
100th Warmest Warmest since: 2002 1936
Ties: 1961
Apr–Sep 2003
6-Month
66.1°F
(18.9°C)
66.7°F
(19.3°C)
-0.6°F
(-0.4°C)
38th Coolest Coolest since: 1997 1907
88th Warmest Warmest since: 2002 2010
Ties: 1940
Mar–Sep 2003
7-Month
62.6°F
(17.0°C)
62.8°F
(17.1°C)
-0.2°F
(-0.1°C)
52nd Coolest Coolest since: 1997 1924
74th Warmest Warmest since: 2002 2012
Ties: 1994
Feb–Sep 2003
8-Month
58.1°F
(14.5°C)
58.7°F
(14.8°C)
-0.6°F
(-0.3°C)
43rd Coolest Coolest since: 1997 1904
83rd Warmest Warmest since: 2002 2012
Ties: 1937, 1984, 1997, 2015
Jan–Sep 2003
9-Month
54.2°F
(12.3°C)
55.0°F
(12.8°C)
-0.8°F
(-0.5°C)
35th Coolest Coolest since: 1997 1904, 1912
91st Warmest Warmest since: 2002 2012
Ties: 1926, 1970, 1993
Dec 2002–Sep 2003
10-Month
52.0°F
(11.1°C)
52.4°F
(11.3°C)
-0.4°F
(-0.2°C)
46th Coolest Coolest since: 2001 1904
79th Warmest Warmest since: 2002 2012
Ties: 1947, 1971, 1974
Nov 2002–Sep 2003
11-Month
50.8°F
(10.4°C)
51.3°F
(10.7°C)
-0.5°F
(-0.3°C)
36th Coolest Coolest since: 2001 1904
89th Warmest Warmest since: 2002 2012
Ties: 1945, 1950, 1968, 1993, 2009, 2015
Oct 2002–Sep 2003
12-Month
51.0°F
(10.6°C)
51.7°F
(10.9°C)
-0.7°F
(-0.3°C)
33rd Coolest Coolest since: 1997 1904
92nd Warmest Warmest since: 2002 2012
Ties: 1927, 1961, 1965, 1968, 1989, 1993
Apr 2002–Sep 2003
18-Month
56.7°F
(13.7°C)
56.7°F
(13.7°C)
0.0°F
(0.0°C)
62nd Coolest Coolest since: 2001 1904, 1918
63rd Warmest Warmest since: 2002 2012
Ties: 1909, 1945, 1948, 1965, 1990
Oct 2001–Sep 2003
24-Month
52.7°F
(11.5°C)
51.6°F
(10.9°C)
1.1°F
(0.6°C)
100th Coolest Coolest since: 2001 1979
24th Warmest Warmest since: 2002 2017
Ties: 2008
Oct 2000–Sep 2003
36-Month
52.3°F
(11.3°C)
51.6°F
(10.9°C)
0.7°F
(0.4°C)
88th Coolest Coolest since: 1998 1979
35th Warmest Warmest since: 2002 2018
Ties: 1941
Oct 1999–Sep 2003
48-Month
52.7°F
(11.5°C)
51.6°F
(10.9°C)
1.1°F
(0.6°C)
103rd Coolest Coolest since: 1999 1905
19th Warmest Warmest since: 2002 2019
Ties: 1988, 2017
Oct 1998–Sep 2003
60-Month
52.9°F
(11.6°C)
51.6°F
(10.9°C)
1.3°F
(0.7°C)
113th Coolest Coolest since: 2001 1906
8th Warmest Warmest since: 2002 2002
Ties: 2012, 2013

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published August 2020, retrieved on August 14, 2020 from https://www.ncdc.noaa.gov/cag/