It wont be the stadium or the pitch, they will be fine. Undersoil heating and all that.
Problem will be the safety of the fans. Would need to clear all external stairs, roads, parking etc. With a 1:30 KO then this has to be done early to get all the TV gear in. Can you imagine the carnage of a double decker bus sliding across the coach park.
BUT. Forecast for Sunday is very bad but not snow.