Chilly this evening and turning cold, overnight temperatures will be in the 30s.
A Freeze Warning is in effect from midnight Monday night through 8 a.m. Tuesday for Butler, Lawrence, Armstrong, Indiana counties and points north.
A Frost Advisory is in effect for Allegheny, Washington, Beaver, Westmoreland and Fayette counties from midnight through 8 a.m. on Tuesday. Take steps to protect outdoor plants and crops as they could be damaged or killed from the cold temperatures tonight…