The National Weather Service in Pittsburgh is predicting winter weather late Sunday and early Monday morning.

Butler County is forecast to get 1 to 2 inches of overnight accumulation, according to the Weather Service.

Snow is expected to start falling late Sunday night and will be heaviest before dawn. Monday's commute could be affected in some areas, the Weather Service said.

The overnight low for Butler is 27 degrees, while Monday's high is 47 degrees.

A winter weather advisory has been issued for Westmoreland County, where 4 to 6 inches of snow is expected.