A week after parts of the Pittsburgh region saw frost advisories and freeze warnings, near record heat is expected for the start of the new week.
A high of 9o-to-91 degrees is forecast for Monday, and a high around 90 is expected on Tuesday, National Weather Service meteorologist David Shallenberger said.
That’s about a 35-degree swing from the high of 56 on Thursday, and almost 20 degrees higher than the normal high of 72…