By Laura Bannon

CHICAGO (CBS)– A brief warmup is ahead.

Tuesday’s highs reach the 50s with party cloudy skies.

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Shower chances increase after midnight.

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Periods of light rain showers are expected throughout Wednesday. Colder air arrives by the afternoon as temperatures dip into the 40s.

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After a couple of above average day, colder air settles in for the end of the week.

Laura Bannon