Illinois May Average Temperature
Degrees Fahrenheit
189505
62.7
189605
68.9
189705
58.6
189805
61.8
189905
63.2
190005
63.9
190105
60.8
190205
66.2
190305
64.4
190405
61.4
190505
62.5
190605
63.2
190705
55.9
190805
62.5
190905
59.4
191005
57.0
191105
67.6
191205
64.3
191305
62.4
191405
64.4
191505
59.1
191605
62.6
191705
55.8
191805
66.2
191905
58.9
192005
60.3
192105
64.2
192205
65.5
192305
60.2
192405
55.9
192505
58.6
192605
64.0
192705
60.3
192805
62.4
192905
59.1
193005
63.2
193105
58.5
193205
63.4
193305
63.5
193405
67.2
193505
56.9
193605
66.4
193705
62.7
193805
61.9
193905
65.2
194005
58.9
194105
66.1
194205
61.9
194305
60.6
194405
66.8
194505
57.1
194605
59.0
194705
58.5
194805
60.0
194905
64.3
195005
63.4
195105
63.7
195205
61.6
195305
63.1
195405
58.1
195505
64.3
195605
64.0
195705
61.9
195805
62.6
195905
66.5
196005
59.4
196105
57.8
196205
69.4
196305
60.9
196405
66.7
196505
67.3
196605
58.0
196705
58.0
196805
59.0
196905
62.4
197005
65.3
197105
59.0
197205
63.8
197305
58.8
197405
60.9
197505
65.2
197605
58.7
197705
68.9
197805
60.8
197905
61.4
198005
63.2
198105
58.2
198205
67.4
198305
58.9
198405
59.2
198505
64.5
198605
64.1
198705
68.2
198805
64.6
198905
59.5
199005
59.0
199105
68.6
199205
61.2
199305
63.2
199405
60.6
199505
60.1
199605
61.6
199705
57.6
199805
67.4
199905
64.1
200005
65.1
200105
64.8
200205
59.1
200305
61.1
200405
65.7
200505
60.9
200605
62.3
200705
67.6
200805
59.0
200905
62.8
201005
64.3
201105
62.1
201205
68.1
201305
63.9
201405
63.7
201505
64.9
201605
62.0
201705
61.9
201805
70.7
201905
62.5