Illinois, Climate Division 7 May 1988 Average Temperature Rankings
1901-2000
Degrees Fahrenheit
1
65.2
63.2
2.0
93
37
1924
2018
1985
1987
top-third
1955
2
59.4
58.0
1.4
93
37
1907
1896
1984
1987
top-third
1915
3
53.7
52.6
1.1
86
44
1960
2012
1984
1987
normal
4
47.3
47.3
0.0
61
69
1978
2012
1984
1987
normal
1898,1997
5
42.9
43.4
-0.5
49
81
1978
2012
1984
1987
normal
1913,1948
6
41.7
41.4
0.3
61
68
1978
2012
1984
1987
normal
1903
7
42.5
41.5
1.0
86
43
1978
2012
1986
1987
top-third
1986,1990
8
43.4
43.3
0.1
58
71
1978
2012
1984
1987
normal
1923,1931,1944,1945,1947
9
46.1
46.0
0.1
59
70
1978
2012
1984
1987
normal
1913,1973,1981
10
49.1
48.8
0.3
66
63
1978
2012
1984
1987
normal
1901,1989,2009
11
51.6
51.3
0.3
68
61
1904
2012
1984
1987
normal
1903,1923
12
53.6
53.1
0.5
79
50
1904
2012
1986
1987
normal
1898,1933,1938,1945,1989
18
50.5
49.2
1.3
103
25
1979
2017
1987
1987
top-third
1950,1953,1974,1987,2003,2020,2021
24
54.1
53.1
1.0
103
25
1905,1978
2017
1987
1956
top-third
1939,1950,2005,2021
36
53.9
53.0
0.9
92
35
1979
2018
1986
1987
top-third
1943,1950,1974,1989,2009
48
53.9
53.0
0.9
98
28
1980
2019
1987
1957
top-third
1924,1991,1993,2017
60
53.6
53.0
0.6
76
49
1981
2020
1987
1976
normal
1924,1943,1946,1994