Statewide Rankings

Statewide Data Info
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Illinois

Average Temperature Rankings, September 2010

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  • Record Coolest
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  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
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)
76th Coolest
Coolest since:
1918
53rd Warmest
Warmest since:
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)
105th Coolest
Coolest since:
1967
24th Warmest
Warmest since:
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)
115th Coolest
Coolest since:
1967
14th Warmest
Warmest since:
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)
118th Coolest
Coolest since:
1915, 1924
11th Warmest
Warmest since:
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)
121st Coolest
Coolest since:
1924
8th Warmest
Warmest since:
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)
128th Coolest
Coolest since:
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)
126th Coolest
Coolest since:
1924
3rd Warmest
Warmest since:
2012
Feb–Sep 2010
8-Month
61.1°F
(16.2°C)
58.6°F
(14.8°C)
2.5°F
(1.4°C)
120th Coolest
Coolest since:
1904
9th Warmest
Warmest since:
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)
108th Coolest
Coolest since:
1904, 1912
21st Warmest
Warmest since:
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)
103rd Coolest
Coolest since:
1904
25th Warmest
Warmest since:
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)
112th Coolest
Coolest since:
1904
16th Warmest
Warmest since:
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)
106th Coolest
Coolest since:
1904
22nd Warmest
Warmest since:
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:
1904, 1918
42nd Warmest
Warmest since:
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:
1979
40th Warmest
Warmest since:
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:
1979
46th Warmest
Warmest since:
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:
1905
28th Warmest
Warmest since:
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:
1906
25th Warmest
Warmest since:
2020
Ties: 1923

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