Illinois, Climate Division 2 October 2013 Average Temperature Rankings
1901-2000
Degrees Fahrenheit
1
52.1
52.1
0.0
65
65
1925
1963
2012
2011
normal
1960
2
58.9
57.9
1.0
85
45
1917
1971,2021
2012
2010
normal
1933,1955,1970
3
62.9
62.3
0.6
82
48
1917
1947
2012
2010
normal
1927,1946,1954,1968
4
65.2
65.0
0.2
65
65
1917
1947
2009
2012
normal
1898,1930,1948,1958,1968
5
65.8
65.8
0.0
57
73
1917
2021
2009
2012
normal
1960,1975,2001
6
65.1
64.6
0.5
74
56
1917
2007,2021
2009
2012
normal
1906,1986,2001
7
62.4
62.2
0.2
57
73
1917
2010
2009
2012
normal
1898,1913,1960,1984
8
58.5
58.9
-0.4
44
86
1917
2012
2009
2012
normal
1927,1952,1976,1980
9
54.7
55.1
-0.4
44
86
1917
2012
2009
2012
normal
1899,1974,1997,2003,2015
10
51.8
51.8
0.0
60
70
1917
2012
2009
2012
normal
1976,1984,1985
11
50.2
49.4
0.8
86
43
1904,1917
2012
2011
2012
top-third
1896,1900,1990,2018
12
49.3
48.5
0.8
89
40
1904
2012
2011
2012
top-third
1946,1976
18
55.1
53.9
1.2
102
27
1904
2012
2011
2012
top-third
1939,1942,1995,2010
24
51.3
48.5
2.8
125
3
1905
2017
2012
1999
top-tenth
36
50.5
48.4
2.1
120
7
1904
2000
2011
2012
top-tenth
2006
48
50.6
48.4
2.2
124
2
1905
2007
2012
2007
top-tenth
2001,2023
60
49.9
48.4
1.5
115
10
1905
2002
2012
2008
top-tenth
1991,2001,2005