Illinois, Climate Division 7 March 1999 Average Temperature Rankings
1901-2000
Degrees Fahrenheit
1
39.7
41.6
-1.9
44
86
1960
2012
1996
1998
normal
2
39.2
36.6
2.6
99
31
1978
2012
1996
1998
top-third
3
35.7
33.6
2.1
92
38
1978
2012
1997
1998
top-third
1931,2007
4
35.9
33.1
2.8
106
23
1978
2012
1997
1998
top-third
1935,1949,1954
5
38.0
34.9
3.1
114
15
1978
2012
1997
1998
top-third
1919,1991,2006
6
41.3
38.4
2.9
116
13
1978
2012
1998
1995
top-tenth
1935,1983
7
45.7
42.6
3.1
122
7
1977
2012
1998
1932
top-tenth
8
49.4
46.5
2.9
123
6
1977
2012,2017
1998
1932
top-tenth
2000,2006
9
52.4
49.8
2.6
122
7
1977
2012
1998
1932
top-tenth
10
54.4
52.1
2.3
119
10
1977
2012
1998
1992
top-tenth
2023
11
55.7
53.1
2.6
122
7
1977
2012
1998
1992
top-tenth
12
55.5
53.1
2.4
121
8
1918
2012
1998
1992
top-tenth
2002
18
50.7
48.2
2.5
121
7
1905,1979
2017
1998
1992
top-tenth
2018
24
54.5
53.1
1.4
110
18
1905,1978
2017
1998
1992
top-third
2003,2020
36
53.9
53.0
0.9
93
34
1979
2018
1998
1993
top-third
1944,1950,2005
48
53.5
53.0
0.5
75
51
1980
2019
1998
1995
normal
1943,1994,2015
60
53.6
53.0
0.6
80
45
1981
2020
1998
1995
normal
1924,1925,1933,1941,1955,1976