Illinois, Climate Division 9 November-June Average Temperature
Degrees Fahrenheit
1901-1935
-99
189606
49.2
1.1
189706
48.0
-0.1
189806
49.1
1.0
189906
45.5
-2.6
190006
47.6
-0.5
190106
47.6
-0.5
190206
46.0
-2.1
190306
48.6
0.5
190406
44.5
-3.6
190506
46.7
-1.4
190606
47.5
-0.6
190706
47.8
-0.3
190806
48.8
0.7
190906
48.9
0.8
191006
47.9
-0.2
191106
49.0
0.9
191206
44.7
-3.4
191306
48.4
0.3
191406
49.7
1.6
191506
47.3
-0.8
191606
47.9
-0.2
191706
47.0
-1.1
191806
45.9
-2.2
191906
49.8
1.7
192006
46.1
-2.0
192106
51.3
3.2
192206
50.1
2.0
192306
48.3
0.2
192406
47.3
-0.8
192506
49.9
1.8
192606
46.9
-1.2
192706
48.3
0.2
192806
47.3
-0.8
192906
47.7
-0.4
193006
48.5
0.4
193106
48.6
0.5
193206
52.3
4.2
193306
49.3
1.2
193406
49.7
1.6
193506
49.0
0.9