Illinois, Climate Division 5 36-Month Period Ending in July Average Temperature
Degrees Fahrenheit
189807
50.3
189907
49.5
190007
49.7
190107
49.5
190207
49.5
190307
49.5
190407
48.0
190507
48.0
190607
48.0
190707
49.1
190807
49.6
190907
49.8
191007
49.8
191107
50.1
191207
49.1
191307
49.5
191407
49.8
191507
50.5
191607
50.1
191707
49.2
191807
48.5
191907
49.3
192007
49.2
192107
51.3
192207
51.2
192307
51.9
192407
50.2
192507
50.0
192607
49.3
192707
49.7
192807
49.5
192907
49.9
193007
50.0
193107
50.5
193207
51.9
193307
52.3
193407
52.3
193507
51.2
193607
50.5
193707
50.0
193807
50.2
193907
51.2
194007
50.8
194107
50.9
194207
51.0
194307
51.0
194407
50.8
194507
50.1
194607
50.5
194707
50.2
194807
50.6
194907
50.9
195007
51.1
195107
50.2
195207
49.7
195307
50.2
195407
51.6
195507
52.1
195607
51.8
195707
51.2
195807
50.3
195907
50.2
196007
49.5
196107
49.8
196207
49.7
196307
49.6
196407
49.9
196507
49.8
196607
50.4
196707
49.9
196807
49.7
196907
49.4
197007
49.2
197107
49.6
197207
50.1
197307
50.7
197407
51.1
197507
50.7
197607
51.0
197707
50.1
197807
49.3
197907
48.1
198007
48.6
198107
49.8
198207
49.7
198307
50.3
198407
49.8
198507
50.9
198607
50.6
198707
51.6
198807
51.6
198907
51.5
199007
50.9
199107
51.6
199207
51.8
199307
51.5
199407
50.3
199507
50.4
199607
50.2
199707
50.2
199807
50.4
199907
51.8
200007
52.7
200107
52.0
200207
51.8
200307
51.1
200407
51.6
200507
51.3
200607
52.3
200707
52.2
200807
52.0
200907
51.0
201007
51.0
201107
50.9
201207
52.6
201307
52.4
201407
51.4
201507
49.5
201607
50.5
201707
52.6
201807
53.2
201907
52.3