A large chunk of the middle part of the country will see wet, potentially stormy weather as a system moves through the Plains.

Central Pennsylvania residents can expect a chilly and unsettled Memorial Day weekend, with temperatures remaining well below seasonal averages and a chance of light rain showers, particularly in northeastern parts of the state.

A slow-moving system means rain could force those planning outdoor activities in the central and southern U.S. this holiday weekend to come up with a Plan B on one or more days.