By Laura Bannon

CHICAGO (CBS)– A cool down is in effect.

Mostly cloudy with a much cooler feel Thursday as afternoon temps hold in the 50s.

There is a limited chance for a passing shower at times. The chill settles in tonight as lows drop into the 40s.

Seasonably cool weather lasts into Saturday as rain chances increase after dark. Next wave of rain arrives Sunday and lingers into next week.

Laura Bannon