Illinois, Climate Division 2 36-Month Period Ending in June Average Temperature
Degrees Fahrenheit
1901-2000
-99
189806
48.8
0.4
189906
48.1
-0.3
190006
48.5
0.1
190106
48.2
-0.2
190206
48.5
0.1
190306
48.3
-0.1
190406
46.9
-1.5
190506
46.4
-2.0
190606
46.5
-1.9
190706
47.6
-0.8
190806
48.1
-0.3
190906
48.2
-0.2
191006
48.1
-0.3
191106
48.5
0.1
191206
47.5
-0.9
191306
47.7
-0.7
191406
47.9
-0.5
191506
48.8
0.4
191606
48.2
-0.2
191706
47.3
-1.1
191806
46.4
-2.0
191906
47.4
-1.0
192006
47.4
-1.0
192106
49.5
1.1
192206
49.6
1.2
192306
50.1
1.7
192406
48.7
0.3
192506
48.0
-0.4
192606
47.3
-1.1
192706
47.3
-1.1
192806
47.4
-1.0
192906
47.8
-0.6
193006
47.9
-0.5
193106
48.3
-0.1
193206
49.8
1.4
193306
50.2
1.8
193406
50.2
1.8
193506
49.1
0.7
193606
48.2
-0.2
193706
48.0
-0.4
193806
48.2
-0.2
193906
49.3
0.9
194006
49.0
0.6
194106
49.1
0.7
194206
49.2
0.8
194306
49.0
0.6
194406
48.8
0.4
194506
48.2
-0.2
194606
48.6
0.2
194706
48.2
-0.2
194806
48.3
-0.1
194906
48.7
0.3
195006
48.9
0.5
195106
48.1
-0.3
195206
47.5
-0.9
195306
47.9
-0.5
195406
49.3
0.9
195506
49.9
1.5
195606
49.7
1.3
195706
49.2
0.8
195806
48.5
0.1
195906
48.1
-0.3
196006
47.7
-0.7
196106
48.1
-0.3
196206
48.0
-0.4
196306
47.8
-0.6
196406
48.2
-0.2
196506
48.2
-0.2
196606
48.6
0.2
196706
48.1
-0.3
196806
48.0
-0.4
196906
48.0
-0.4
197006
47.7
-0.7
197106
48.0
-0.4
197206
48.2
-0.2
197306
48.6
0.2
197406
48.9
0.5
197506
48.9
0.5
197606
49.3
0.9
197706
48.4
0.0
197806
47.7
-0.7
197906
46.5
-1.9
198006
46.9
-1.5
198106
47.9
-0.5
198206
48.0
-0.4
198306
48.6
0.2
198406
48.3
-0.1
198506
49.2
0.8
198606
48.8
0.4
198706
49.6
1.2
198806
49.7
1.3
198906
49.9
1.5
199006
49.2
0.8
199106
49.7
1.3
199206
49.9
1.5
199306
49.4
1.0
199406
48.4
0.0
199506
48.3
-0.1
199606
48.4
0.0
199706
48.2
-0.2
199806
48.6
0.2
199906
49.9
1.5
200006
51.2
2.8
200106
50.4
2.0
200206
50.3
1.9
200306
49.5
1.1
200406
50.0
1.6
200506
49.7
1.3
200606
50.5
2.1
200706
50.6
2.2