Illinois, Climate Division 6 January-June Average Temperature
Degrees Fahrenheit
189506
45.6
189606
50.2
189706
47.1
189806
49.1
189906
45.5
190006
47.1
190106
47.3
190206
46.4
190306
47.5
190406
44.0
190506
46.1
190606
47.2
190706
46.9
190806
48.8
190906
48.2
191006
48.0
191106
50.8
191206
43.1
191306
47.8
191406
48.7
191506
47.4
191606
46.7
191706
45.8
191806
46.8
191906
49.5
192006
46.1
192106
53.0
192206
49.2
192306
47.5
192406
45.2
192506
50.3
192606
46.9
192706
48.7
192806
47.5
192906
46.5
193006
49.0
193106
49.3
193206
50.3
193306
50.8
193406
49.6
193506
48.0
193606
46.0
193706
47.2
193806
51.0
193906
49.9
194006
44.6
194106
49.0
194206
48.9
194306
48.2
194406
49.8
194506
48.3
194606
51.6
194706
45.9
194806
47.6
194906
49.2
195006
48.1
195106
47.1
195206
50.5
195306
51.0
195406
50.9
195506
49.6
195606
48.8
195706
48.7
195806
45.9
195906
48.9
196006
45.6
196106
47.4
196206
48.1
196306
47.3
196406
50.1
196506
48.4
196606
46.6
196706
49.0
196806
47.5
196906
46.7
197006
46.7
197106
47.6
197206
47.9
197306
49.4
197406
49.1
197506
48.2
197606
50.0
197706
48.5
197806
43.3
197906
43.6
198006
46.3
198106
49.5
198206
45.3
198306
48.3
198406
47.6
198506
47.7
198606
50.8
198706
51.6
198806
48.0
198906
47.8
199006
51.2
199106
51.8
199206
50.4
199306
46.9
199406
47.7
199506
48.1
199606
46.9
199706
47.0
199806
51.7
199906
49.9
200006
51.1
200106
49.0
200206
50.1
200306
47.0
200406
49.7
200506
50.7
200606
51.8
200706
50.1
200806
47.3
200906
49.2
201006
49.2
201106
48.6
201206
54.4
201306
47.9
201406
45.6
201506
47.6
201606
51.4
201706
52.8
201806
49.5
201906
47.8