Kids and adults alike were out sledding and enjoying the snow Sunday afternoon in Philadelphia's East Falls neighborhood. Overnight into Monday, temperatures will plunge, and Martin Luther King Jr. Day will be bitterly cold. Black ice could make for a slippery morning commute. Stay with CBS News Philadelphia on air and online for the latest conditions, and head to the link in our bio for the NEXT Weather forecast. #philadelphia #eastfalls #snow #weather #nextweather