The National Weather Service in Columbia has issued the following Freezing Rain and Winter Weather Advisories for Sunday and Monday (see all current advisories, with details, here):
Freezing Rain Advisory
Darlington; Dillon; Marlboro,Cherokee; Greater Greenville; Greater Oconee; Greater Pickens; Spartanburg; York, Anderson, Chesterfield; Lancaster,
Winter Weather Advisory: Greenville Mountains; Oconee Mountains; Pickens Mountains