Monday is going to be a scorcher for central and eastern Pennsylvania, according to forecasters.
"The warm-up has begun across central Pa., but the core of the heat and humidity will arrive on Monday," according to the National Weather Service at State College.
Heat index levels, the combination of the feel of temperature and humidity, will reach about 102 in the Harrisburg area on Monday.
"Widespread temperatures near or above 90 are expected from Cleveland to Syracuse, New York, and Harrisburg, Pennsylvania," according to AccuWeather.
The heat advisory is in effect from noon until 8 p.m. Monday and includes Dauphin, Cumberland, York, Lancaster, Perry, Lebanon, Adams, Mifflin, Juniata, Franklin, Union, Snyder, Montour, Northumberland, Columbia, and Schuylkill counties.
To the east, a heat advisory has also been issued on Monday for Berks, Lehigh, Northampton-Delaware, Philadelphia, Chester, Montgomery, Bucks, Tioga, Sullivan, Susquehanna, Wayne, Wyoming, Lackawanna, Luzerne and Pike counties.
Monday's high in the Harrisburg area is expected to be near 94. The low at night will be around 75.
"This combination of high heat and humidity may cause heat stress during outdoor exertion or extended exposure," forecasters said.
Drier and less humid weather is expected to make a brief appearance later this week, according to AccuWeather.
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