Chicago First Alert Weather: Chance of thunder tonight

CHICAGO (CBS) -- After a hot and humid day, a cold front is on the way to Chicago.

It may spark a storm overnight, lingering very early in the morning, according to CBS 2 Meteorologist Mary Kay Kleist.

Then, the area could have another shower or storm return tomorrow afternoon as the front crosses the region.

A cooler trend will come behind the front to close the week and temperatures stay below average for a while.

TONIGHT: STORM CHANCE. LOW 73. BREEZY.

WEDNESDAY: A 30% CHANCE FOR SHOWERS OR THUNDERSTORMS. HIGH 87.

THURSDAY: CLOUDS LINGER. COOLER. HIGH 71.

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