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 2004

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
September 2004
1-Month
67.7°F
(19.8°C)
66.2°F
(19.0°C)
1.5°F
(0.8°C)
84th Coolest Coolest since: 2003 1918
43rd Warmest Warmest since: 2002 1925, 1933
Ties: 1947
Aug–Sep 2004
2-Month
68.1°F
(20.1°C)
69.8°F
(21.0°C)
-1.7°F
(-0.9°C)
18th Coolest Coolest since: 1994 1967
109th Warmest Warmest since: 2003 1936
Ties: 1928
Jul–Sep 2004
3-Month
69.7°F
(20.9°C)
71.7°F
(22.1°C)
-2.0°F
(-1.2°C)
11th Coolest Coolest since: 1992 1967
116th Warmest Warmest since: 2003 1936
Jun–Sep 2004
4-Month
69.8°F
(21.0°C)
71.7°F
(22.1°C)
-1.9°F
(-1.1°C)
15th Coolest Coolest since: 1992 1915, 1924
112th Warmest Warmest since: 2003 1936
May–Sep 2004
5-Month
69.0°F
(20.6°C)
69.8°F
(21.0°C)
-0.8°F
(-0.4°C)
32nd Coolest Coolest since: 2003 1924
95th Warmest Warmest since: 2002 1936
Ties: 1968, 1985
Apr–Sep 2004
6-Month
66.5°F
(19.2°C)
66.7°F
(19.3°C)
-0.2°F
(-0.1°C)
46th Coolest Coolest since: 2003 1907
81st Warmest Warmest since: 2002 2010
Ties: 1897, 1912, 1947, 1969
Mar–Sep 2004
7-Month
63.5°F
(17.5°C)
62.9°F
(17.2°C)
0.6°F
(0.3°C)
85th Coolest Coolest since: 2003 1924
42nd Warmest Warmest since: 2002 2012
Ties: 1895, 1896, 1908, 1913, 1963, 1995, 1999, 2001
Feb–Sep 2004
8-Month
59.3°F
(15.2°C)
58.7°F
(14.8°C)
0.6°F
(0.4°C)
80th Coolest Coolest since: 2003 1904
47th Warmest Warmest since: 2002 2012
Ties: 1896, 1995, 2019
Jan–Sep 2004
9-Month
55.4°F
(13.0°C)
54.9°F
(12.7°C)
0.5°F
(0.3°C)
75th Coolest Coolest since: 2003 1904, 1912
52nd Warmest Warmest since: 2002 2012
Ties: 1913, 1977
Dec 2003–Sep 2004
10-Month
53.3°F
(11.8°C)
52.4°F
(11.3°C)
0.9°F
(0.5°C)
86th Coolest Coolest since: 2003 1904
40th Warmest Warmest since: 2002 2012
Ties: 1942, 1973
Nov 2003–Sep 2004
11-Month
52.5°F
(11.4°C)
51.3°F
(10.7°C)
1.2°F
(0.7°C)
95th Coolest Coolest since: 2003 1904
31st Warmest Warmest since: 2002 2012
Ties: 1925, 1941, 1976, 2018
Oct 2003–Sep 2004
12-Month
52.7°F
(11.5°C)
51.7°F
(10.9°C)
1.0°F
(0.6°C)
93rd Coolest Coolest since: 2003 1904
33rd Warmest Warmest since: 2002 2012
Ties: 1922, 1938
Apr 2003–Sep 2004
18-Month
57.2°F
(14.0°C)
56.7°F
(13.7°C)
0.5°F
(0.3°C)
81st Coolest Coolest since: 2003 1904, 1918
45th Warmest Warmest since: 2002 2012
Ties: 1956, 1976, 1986
Oct 2002–Sep 2004
24-Month
51.8°F
(11.0°C)
51.6°F
(10.9°C)
0.2°F
(0.1°C)
73rd Coolest Coolest since: 1997 1979
52nd Warmest Warmest since: 2003 2017
Ties: 1898, 1941, 1948, 1950, 1965, 1972, 1989
Oct 2001–Sep 2004
36-Month
52.7°F
(11.5°C)
51.6°F
(10.9°C)
1.1°F
(0.6°C)
101st Coolest Coolest since: 2003 1979
23rd Warmest Warmest since: 2002 2018
Ties: 1935, 1987
Oct 2000–Sep 2004
48-Month
52.4°F
(11.3°C)
51.6°F
(10.9°C)
0.8°F
(0.4°C)
97th Coolest Coolest since: 1999 1905
26th Warmest Warmest since: 2003 2019
Ties: 1941, 1942, 1989, 1990, 2010, 2014
Oct 1999–Sep 2004
60-Month
52.7°F
(11.5°C)
51.6°F
(10.9°C)
1.1°F
(0.6°C)
106th Coolest Coolest since: 2001 1906
16th Warmest Warmest since: 2003 2020
Ties: 1933, 1936, 1956, 2001, 2005, 2018

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/