Illinois, Climate Division 2 August 1989 Average Temperature Rankings
1901-2000
Degrees Fahrenheit
1
70.3
71.1
-0.8
43
87
1915
1947
1986
1988
bottom-third
1942
2
72.0
72.2
-0.2
54
76
1915
1936
1986
1988
normal
1895,1909,1942,1974
3
70.7
71.0
-0.3
47
83
1915
1988
1986
1988
normal
1976,2017
4
67.4
68.0
-0.6
46
84
1915
1934
1981
1988
normal
1963
5
63.3
63.9
-0.6
34
96
1907
1991
1982
1988
bottom-third
1974,1990
6
58.7
59.3
-0.6
39
91
1926,1950
2012
1984
1988
bottom-third
1902,1937,1966
7
53.0
54.3
-1.3
25
105
1904
2012
1982
1988
bottom-third
1965
8
50.2
50.2
0.0
62
68
1912
2012
1985
1988
normal
1900
9
47.6
47.5
0.1
61
68
1904
2012
1984
1988
normal
1937,1980,2001,2011
10
46.9
46.6
0.3
75
54
1904
2012
1986
1988
normal
1898,1957,1992,1993
11
46.9
47.1
-0.2
49
80
1904
2012
1984
1988
normal
1908,1947,1961
12
48.4
48.5
-0.1
49
80
1904
2012
1984
1988
normal
1935,1947,1948,1968,1993,2003
18
53.0
52.1
0.9
92
37
1904
2012
1986
1988
top-third
1974
24
49.1
48.5
0.6
90
38
1905
2017
1986
1988
top-third
1949,1974,1976,2010,2019
36
49.9
48.4
1.5
107
20
1905,1979
2000
1987
1988
top-third
1932
48
49.6
48.4
1.2
105
21
1905
2001
1987
1988
top-third
1922,1955,1956,1990,1991
60
49.5
48.4
1.1
102
23
1906
2002
1988
1987
top-third
1957,1987,1990,1992,1999,2000