Illinois, Climate Division 7 September 1927 Average Temperature Rankings
1901-2000
Degrees Fahrenheit
1
71.0
67.4
3.6
112
18
1918
1925
1926
1925
top-third
2
69.7
70.8
-1.1
35
95
1967
1936
1924
1926
bottom-third
1942,2009
3
71.2
72.6
-1.4
23
107
1967
1936
1924
1926
bottom-third
1896,1981
4
70.4
72.6
-2.2
10
120
1967
1936
1924
1926
bottom-tenth
5
68.7
70.7
-2.0
11
119
1924
1936
1924
1926
bottom-tenth
1904,1928,1950
6
66.3
67.7
-1.4
16
114
1907
2010
1924
1926
bottom-third
1935,1966,1974,1982
7
63.1
64.0
-0.9
32
98
1924
2012
1926
1925
bottom-third
1989
8
60.1
59.9
0.2
66
64
1904,1924
2012
1926
1925
normal
1945,1956,1981
9
56.4
56.4
0.0
66
64
1979
2012
1926
1925
normal
1956,1977
10
53.7
53.9
-0.2
52
77
1904
2012
1926
1925
normal
1900,1906,1964,1975,2009
11
52.2
52.8
-0.6
37
92
1904
2012
1926
1925
bottom-third
1910,1962
12
52.5
53.1
-0.6
38
91
1904
2012
1926
1925
bottom-third
1929
18
57.4
58.0
-0.6
35
94
1918
2012
1924
1926
bottom-third
1980
24
52.0
53.1
-1.1
10
118
1979
2017
1918
1926
bottom-tenth
1961,1970,2014
36
52.9
53.0
-0.1
50
77
1979
2018
1926
1925
normal
1914,1924
48
52.5
53.0
-0.5
24
102
1980
2019
1920
1926
bottom-third
1962,1984
60
52.6
53.0
-0.4
27
98
1982
2020
1920
1926
bottom-third
1900,1909,1910,1961,1965,1984,1997