The tornado watch that had been issued Friday evening in York County has expired.
Now the area is under a freeze watch, according to the National Weather Service.
That's because temperatures are expected to dip into the low 30s Saturday night into Sunday morning.
The weather service advises residents to cover sensitive outdoor vegetation or, if possible, take those plants indoors.
The forecast calls for sunny skies, but breezy weather with a high of 58 on Saturday.
Sunday is supposed to be sunny with a high of 57.
Temperatures aren't expected to hit 60 degrees again until Wednesday, when rain returns to the forecast.
Thirty-six Pennsylvania counties are in the watch area.
The weather service says a cold strong front will push through the area late this afternoon and evening.
That will prompt showers and perhaps a narrow band of strong thunderstorms, the weather service said.
There's a chance those thunderstorms could include damaging winds.