National Weather Service issues heat advisory with 100-degree temperatures in the forecast

San Marcos and much of south Central Texas will be under a heat advisory Monday, beginning at 1 p.m. and lasting through 8 p.m.

The National Weather Service issued the heat advisory with 100-degree temperatures in the forecast. The heat advisory is in effect for Hays, Atascosa, Bandera, Bastrop, Bexar, Blanco, Burnet, Caldwell, Comal, Dimmit, Edwards, Frio, Llano, Gillespie, Gonzales, Guadalupe, Karnes, Kendall, Kerr, Kinney, Maverick, Medina, Real, Travis, Uvalde, Val Verde, Williamson and Zavala counties.

NWS said air temperatures are expected between 100-105 degrees across the Interstate 35 corridor and Hill Country, while temperatures are forecast to be 105 to 112 degrees across the Rio Grande Plains.