Following the recent cold spell, warm weather will move into Pennsylvania on Friday and continue to warm throughout the day with consistent temperatures at night. Starting Saturday morning, a low pressure system that is pushing warm air ahead of it, will impact the entire state most of the day with heavy precipitation and potential flooding. As the cold front moves through, the temperature will gradually decrease, eventually becoming cold enough to produce snow on the back end of the system When the front moves ahead, cold weather and clear skies will remain for the next few days until Tuesday night when the next weather system comes. In the meantime before temperatures rise again, dress warm and expect chilly weather to stay for the foreseeable future. As of yesterday, December first, it is officially the start of meteorological winter.