EXCESSIVE HEAT WARNING in effect until 8 P.M. Sunday for most of the area, and a HEAT ADVISORY goes into effect 8 P.M. Saturday until 8 P.M. Sunday for Mifflin County.

The National Weather Service in State College, PA has issued an EXCESSIVE HEAT WARNING for most of the area until 8 PM Sunday. Heat index values up to 110° possible through Sunday. A HEAT ADVISORY goes into effect 8 PM Saturday for only Mifflin County until 8 PM Sunday. The Excessive Heat Warning will continue for Lancaster, York, Adams, Franklin, Perry, Cumberland, Dauphin, Lebanon and Juniata Counties until 8 PM Sunday. Highest values are during the middle of the afternoon, but overnight low temperatures are also very warm with oppressively muggy air. The heat and humidity may cause heat stress during outdoor exertion or extended exposure. More details on the Weather Smart forecast here: