| Place: Temperature |
|---|
| Alton: 79°F / 26°C |
| Aurora: 79°F / 26°C |
| Belleville: 80°F / 26°C |
| Bloomington: 79°F / 26°C |
| Cahokia: 81°F / 27°C |
| Carbondale: 81°F / 27°C |
| Centralia: 79°F / 26°C |
| Champaign: 78°F / 26°C |
| Chicago: 80°F / 27°C |
| Danville: 84°F / 29°C |
| Decatur: 80°F / 27°C |
| Dekalb: 74°F / 24°C |
| Fairfield: 79°F / 26°C |
| Flora: 80°F / 26°C |
| Freeport: 78°F / 26°C |
| Galesburg: 81°F / 27°C |
| Harrisburg: 79°F / 26°C |
|
|
| Joliet: 80°F / 27°C |
| Kankakee: 81°F / 27°C |
| Lacon: 80°F / 27°C |
| Lawrenceville: 81°F / 27°C |
| Marion: 81°F / 27°C |
| Moline: 80°F / 27°C |
| Morris: 81°F / 27°C |
| Mount Vernon: 79°F / 26°C |
| Paris: 79°F / 26°C |
| Peoria: 80°F / 27°C |
|
|
| Pontiac: 79°F / 26°C |
| Quincy: 80°F / 27°C |
| Rantoul: 80°F / 27°C |
| Rochelle: 76°F / 25°C |
| Rockford: 79°F / 26°C |
| Salem: 79°F / 26°C |
| Sparta: 79°F / 26°C |
| Springfield: 81°F / 27°C |
| Sterling: 81°F / 27°C |
| Taylorville: 79°F / 26°C |
| Waukegan: 79°F / 26°C |