Illinois September 1950 Average Temperature Rankings
1901-2000
Degrees Fahrenheit
1
64.5
66.2
-1.7
31
99
1918
1925,1933
1949
1948
bottom-third
1981
2
66.9
69.8
-2.9
5
125
1967
1936
1902
1949
bottom-tenth
3
68.6
71.7
-3.1
3
127
1967
1936
1924
1949
bottom-tenth
1992
4
69.0
71.7
-2.7
5
125
1915,1924
1936
1924
1949
bottom-tenth
1902
5
67.9
69.7
-1.8
12
118
1924
1936
1945
1949
bottom-tenth
1929
6
64.2
66.7
-2.5
5
125
1907
2010
1924
1949
bottom-tenth
7
60.2
62.9
-2.7
2
128
1924
2012
1924
1949
bottom-tenth
8
56.3
58.7
-2.4
4
126
1904
2012
1924
1949
bottom-tenth
1912
9
53.6
54.9
-1.3
22
108
1904,1912
2012
1940
1949
bottom-third
1915,1963
10
51.7
52.4
-0.7
34
95
1904
2012
1945
1949
bottom-third
1960,1994,1997
11
50.8
51.4
-0.6
36
93
1904
2012
1945
1949
bottom-third
1945,1968,1993,2003,2009,2015
12
51.4
51.6
-0.2
50
79
1904
2012
1945
1949
normal
1906,1943,1966,1975
18
56.5
56.7
-0.2
48
81
1904,1918
2012
1947
1949
normal
1906,1947,1959,2001
24
51.8
51.6
0.2
73
55
1979
2017
1948
1949
normal
1898,1941,1948,1965,1972,1989,2004
36
51.8
51.6
0.2
70
57
1979
2018
1947
1949
normal
1938,1973
48
51.8
51.6
0.2
60
66
1905
2019
1948
1949
normal
1916,1925,1931,1945,1958,1974
60
51.9
51.6
0.3
69
56
1906
2020
1949
1946
normal
1944,1946,1959