Illinois, Climate Division 8 January-April Average Temperature
Degrees Fahrenheit
189504
37.2
189604
42.9
189704
41.0
189804
42.5
189904
36.6
190004
40.0
190104
39.8
190204
38.2
190304
41.8
190404
37.6
190504
38.2
190604
40.1
190704
42.7
190804
42.9
190904
42.1
191004
42.7
191104
43.4
191204
34.9
191304
40.4
191404
40.3
191504
41.3
191604
40.5
191704
41.1
191804
38.4
191904
43.4
192004
39.2
192104
46.6
192204
42.0
192304
41.2
192404
39.0
192504
45.5
192604
40.2
192704
44.1
192804
40.9
192904
40.6
193004
42.5
193104
42.7
193204
44.6
193304
43.5
193404
41.0
193504
43.9
193604
37.8
193704
40.2
193804
46.3
193904
43.0
194004
36.7
194104
41.1
194204
42.1
194304
41.5
194404
42.3
194504
43.4
194604
47.0
194704
39.1
194804
40.8
194904
42.2
195004
42.0
195104
40.2
195204
43.5
195304
43.9
195404
45.1
195504
43.7
195604
41.5
195704
42.1
195804
37.5
195904
41.4
196004
38.5
196104
41.3
196204
39.4
196304
39.9
196404
42.8
196504
40.7
196604
39.7
196704
44.3
196804
40.0
196904
39.9
197004
38.8
197104
39.9
197204
41.7
197304
43.2
197404
44.0
197504
40.9
197604
45.1
197704
40.0
197804
34.7
197904
35.2
198004
38.4
198104
43.5
198204
38.1
198304
41.1
198404
39.6
198504
40.2
198604
44.3
198704
43.4
198804
40.5
198904
42.5
199004
46.1
199104
44.1
199204
45.3
199304
39.7
199404
41.1
199504
42.6
199604
39.6
199704
41.6
199804
45.0
199904
44.0
200004
45.2
200104
42.7
200204
44.0
200304
40.8
200404
43.3
200504
44.8
200604
46.4
200704
43.1
200804
40.9
200904
42.6
201004
41.6
201104
42.6
201204
49.1
201304
41.2
201404
38.0
201504
40.0
201604
45.1
201704
48.1
201804
40.2
201904
42.3