A departing system will leave snow bands for northwest Pennsylvania today. The front’s departure will cause high winds, and will also cause temperatures to plummet throughout the Commonwealth. Most of the state will see partly cloudy skies throughout the day on Friday, and some lake effect snow bands could once again impact the northwest portion of the state. Saturday will see temperatures remaining mostly stable, with overcast skies for much of the state.  On Sunday, temperatures will rise in the late afternoon, with the southeast seeing the highest temperatures. On Monday, intermittent rain showers will be concentrated in the western portions of the state.