Illinois, Climate Division 5. East, Average Temperature Rankings, May 2020
1901-2000
Degrees Fahrenheit
1
59.5
61.0
-1.5
43
86
1907
2018
2008
2019
bottom-third
1994
2
53.8
55.5
-1.7
26
103
1907
1977
1997
2019
bottom-third
3
50.0
49.7
0.3
68
61
1960
2012
2019
2018
normal
1933,1968
4
45.1
44.2
0.9
84
45
1978
2012
2019
2018
normal
1903,1952,2022
5
42.3
40.1
2.2
108
21
1978
2012
2019
2017
top-third
1933,1953,1955,1973,1976,2002
6
40.9
38.1
2.8
113
15
1904,1978
2012
2019
2017
top-third
7
40.1
38.3
1.8
100
28
1904
2012
2019
2017
top-third
8
41.8
40.2
1.6
101
27
1904
2012
2019
2017
top-third
1949,1972,1974
9
44.9
43.0
1.9
108
20
1904
2012
2019
2017
top-third
1995
10
47.6
45.9
1.7
107
21
1904
2012
2019
2017
top-third
2005
11
50.2
48.5
1.7
108
20
1904
2012
2019
2017
top-third
12
51.9
50.3
1.6
109
19
1904
2012
2019
2017
top-third
18
47.5
46.2
1.3
99
28
1905
2017
2019
2018
top-third
1935,1953,2002
24
51.5
50.3
1.2
104
23
1905
2017
2019
2018
top-third
1956,1987,2001,2008
36
51.4
50.3
1.1
98
28
1905,1906
2018
2016
2019
top-third
1935,1957,1988
48
52.2
50.3
1.9
123
2
1905
2019
2018
2019
top-tenth
2018
60
52.5
50.3
2.2
123
1
1905,1906,1908
2020
2019
2020
highest