Average Temperatures for Illinois in June





Average temperatures for June at cities throughout Illinois are listed below.

You can jump to a separate table for each region of the state: Chicago Area, Northern Illinois, Central Illinois and Southern Illinois.

The tables give the normal maximum and minimum temperatures based on weather data collected from 1991 to 2020 by the US National Centers for Environmental Information.

Chicago Area

Average June temperatures
High °F Low °F Place High °C Low °C
81 60 Aurora 27 16
78 57 Chicago Botanical Garden 26 14
81 63 Chicago Midway Airport 27 17
80 61 Chicago O'Hare Airport 27 16
80 58 Elgin 27 15
80 60 Joliet 27 16
79 59 Rochelle 26 15

Northern Illinois

Average temperatures in June
High °F Low °F Place High °C Low °C
78 59 Antioch 26 15
80 60 DeKalb 27 15
80 61 Dixon 27 16
79 59 Freeport 26 15
83 61 Moline 28 16
81 60 Rockford 27 15
77 56 Waukegan 25 13

Central Illinois

Normal temperatures for June
High °F Low °F Place High °C Low °C
84 66 Alton 29 19
81 60 Bloomington 27 15
86 65 Cahokia 30 18
83 62 Champaign 28 17
86 63 Charleston 30 17
83 61 Danville 28 16
82 63 Decatur 28 17
82 61 Kankakee 28 16
80 61 Ottawa 27 16
83 62 Peoria 28 17
82 63 Quincy 28 17
84 63 Springfield 29 17

Southern Illinois

Average June temperatures
High °F Low °F Place High °C Low °C
87 65 Belleville 31 18
86 66 Cairo 30 19
85 64 Carbondale 29 18
82 64 Mt Vernon 28 18
Reference

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

Illinois Temperatures
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