Illinois, Climate Division 7 September 1987 Average Temperature Rankings
1901-2000
Degrees Fahrenheit
1
68.3
67.4
0.9
74
56
1918
1925
1985
1986
normal
1905,1912
2
71.9
70.8
1.1
91
39
1967
1936
1986
1983
top-third
1898,1991
3
73.5
72.6
0.9
86
44
1967
1936
1986
1983
normal
1906,1977
4
73.9
72.6
1.3
100
30
1967
1936
1986
1983
top-third
1900,1959,2019,2021
5
73.1
70.7
2.4
119
11
1924
1936
1986
1936
top-tenth
1913
6
69.8
67.7
2.1
118
12
1907
2010
1986
1977
top-tenth
1914,2005,2007
7
66.4
64.0
2.4
121
9
1924
2012
1986
1977
top-tenth
8
62.6
59.9
2.7
124
6
1904,1924
2012
1986
1954
top-tenth
2016,2017
9
58.7
56.4
2.3
120
10
1979
2012
1986
1954
top-tenth
1938,1953,2002,2005
10
56.1
53.9
2.2
115
14
1904
2012
1986
1954
top-third
2005
11
54.6
52.8
1.8
111
18
1904
2012
1986
1954
top-third
1919,1995
12
54.8
53.1
1.7
113
16
1904
2012
1986
1954
top-third
1995,2006
18
59.7
58.0
1.7
119
10
1918
2012
1986
1955
top-tenth
1921,1922
24
54.5
53.1
1.4
110
18
1979
2017
1986
1955
top-third
2022
36
54.1
53.0
1.1
101
26
1979
2018
1986
1956
top-third
1922,2004,2020
48
53.5
53.0
0.5
81
45
1980
2019
1986
1957
normal
1949,1994,1998,1999,2015
60
53.7
53.0
0.7
85
40
1982
2020
1986
1958
top-third
1932,1943,1954,1958,1993