| Place: Temperature |
|---|
| Alton: -4°C |
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| Belleville: -4°C |
| Bloomington: -6°C |
| Cahokia: -4°C |
| Carbondale: -3°C |
| Centralia: -4°C |
| Champaign: -4°C |
|
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| Danville: -5°C |
| Decatur: -5°C |
| Dekalb: -6°C |
| Fairfield: -3°C |
| Flora: -3°C |
| Freeport: -6°C |
| Galesburg: -9°C |
| Harrisburg: -2°C |
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| Lacon: -6°C |
| Lawrenceville: -2°C |
| Marion: -2°C |
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| Mount Vernon: -3°C |
| Paris: -4°C |
| Peoria: -7°C |
| Pittsfield: -6°C |
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| Quincy: -7°C |
| Rantoul: -5°C |
| Rochelle: -7°C |
| Rockford: -6°C |
| Salem: -3°C |
| Sparta: -4°C |
| Springfield: -6°C |
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| Taylorville: -5°C |
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