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Story summary
- Meteorologists forecast unusually warm late-October temperatures in the Chicago area, with highs near 70°F on Halloween.
- A cold front will move through today, lowering temperatures yet keeping them above the October norm.
- Rain chances rise Thursday and Friday, with isolated evening showers possible each night.
- The National Weather Service lists the normal October 31 high as 56°F, far below the forecasted 68°F.