Illinois May 1975 Average Temperature Rankings
1901-2000
Degrees Fahrenheit
1
65.2
62.1
3.1
105
25
1917
2018
1974
1970
top-third
1939
2
56.8
56.8
0.0
50
80
1907
1896
1973
1974
normal
1905,1939,1952,1956,1978,2021
3
49.6
51.1
-1.5
29
101
1960
2012
1971
1974
bottom-third
1899,1966
4
44.4
45.7
-1.3
36
94
1978
2012
1971
1974
bottom-third
1951,1966
5
41.4
41.6
-0.2
56
74
1978,1979
2012
1972
1974
normal
2019
6
39.7
39.6
0.1
63
66
1978
2012
1971
1974
normal
1898
7
39.9
39.8
0.1
62
67
1904
2012
1971
1974
normal
1927,1930,1944,1966
8
41.7
41.6
0.1
61
68
1904,1978
2012
1973
1974
normal
1913,1945,1966,2011
9
43.8
44.4
-0.6
36
93
1904
2012
1971
1974
bottom-third
1971
10
46.6
47.3
-0.7
33
96
1904
2012
1970
1974
bottom-third
1916,1969
11
49.4
49.8
-0.4
40
89
1904
2012
1971
1974
bottom-third
1906,1930,1959,1962
12
50.9
51.6
-0.7
29
100
1904
2012
1970
1974
bottom-third
1924,1952,1958,1959,1980
18
47.4
47.6
-0.2
52
76
1979
2017
1971
1974
normal
1941,1958,1964,1965,1967
24
51.9
51.6
0.3
74
54
1905
2017
1972
1974
normal
1965,1972,1976,1993,1998
36
51.7
51.6
0.1
60
67
1979
2018
1973
1974
normal
1898,1938,1947,1948,1958,1966,1973
48
52.0
51.6
0.4
76
50
1980
2019
1974
1974
normal
1936,1938,1943,1950,1974,1976,1994
60
51.8
51.6
0.2
64
61
1906,1907,1908,1981
2020
1974
1959
normal
1922,1940,1948