Illinois, Climate Division 3 December-June Average Temperature
Degrees Fahrenheit
1901-1993
-99
189606
45.8
2.4
189706
43.6
0.2
189806
43.4
0.0
189906
40.5
-2.9
190006
42.4
-1.0
190106
42.8
-0.6
190206
41.6
-1.8
190306
42.7
-0.7
190406
39.1
-4.3
190506
41.4
-2.0
190606
43.2
-0.2
190706
42.8
-0.6
190806
44.7
1.3
190906
43.6
0.2
191006
42.5
-0.9
191106
45.6
2.2
191206
39.9
-3.5
191306
43.7
0.3
191406
45.2
1.8
191506
42.1
-1.3
191606
41.8
-1.6
191706
40.4
-3.0
191806
41.1
-2.3
191906
45.9
2.5
192006
41.1
-2.3
192106
48.4
5.0
192206
45.3
1.9
192306
43.1
-0.3
192406
42.5
-0.9
192506
44.2
0.8
192606
42.2
-1.2
192706
43.8
0.4
192806
43.1
-0.3
192906
42.3
-1.1
193006
44.4
1.0
193106
45.4
2.0
193206
46.6
3.2
193306
45.8
2.4
193406
46.5
3.1
193506
42.8
-0.6
193606
40.7
-2.7
193706
43.0
-0.4
193806
45.6
2.2
193906
45.4
2.0
194006
41.5
-1.9
194106
45.4
2.0
194206
45.5
2.1
194306
42.6
-0.8
194406
44.5
1.1
194506
42.6
-0.8
194606
45.3
1.9
194706
42.0
-1.4
194806
43.7
0.3
194906
44.7
1.3
195006
43.4
0.0
195106
41.2
-2.2
195206
44.8
1.4
195306
45.5
2.1
195406
45.9
2.5
195506
44.7
1.3
195606
43.9
0.5
195706
44.0
0.6
195806
42.3
-1.1
195906
42.9
-0.5
196006
41.8
-1.6
196106
42.4
-1.0
196206
42.5
-0.9
196306
42.3
-1.1
196406
43.5
0.1
196506
42.3
-1.1
196606
43.4
0.0
196706
43.5
0.1
196806
43.7
0.3
196906
41.9
-1.5
197006
42.1
-1.3
197106
43.3
-0.1
197206
43.3
-0.1
197306
44.1
0.7
197406
43.6
0.2
197506
43.2
-0.2
197606
45.6
2.2
197706
43.3
-0.1
197806
38.8
-4.6
197906
39.3
-4.1
198006
42.9
-0.5
198106
45.0
1.6
198206
40.4
-3.0
198306
45.0
1.6
198406
41.2
-2.2
198506
43.9
0.5
198606
44.0
0.6
198706
47.8
4.4
198806
44.3
0.9
198906
43.5
0.1
199006
44.4
1.0
199106
46.5
3.1
199206
46.1
2.7
199306
42.5
-0.9