The single digits are coming as an arctic blast from the north will plunge Warren County into icebox conditions for most of the week.Lows are expected to drop to 3 degrees early Thursday morning, with the wind making it feel like -3 degrees. The frigid temperatures descending on the South have not been seen since this time last year when Warren County plunged into a deep freeze.Last year on Jan. 7, the temperature in Warren County dipped to -1, according to the National Weather Service. That was just slightly higher than Warren County’s all-time record cold for Jan. 7, which was -4 in 1970.In preparation for plunging temperatures, the National Weather Service is advising Midstate residents to beware of the dangerous cold.“An arctic cold front will move through the Midstate on Tuesday night and into Wednesday, bringing a long period of subfreezing temperatures to the Midstate and the coldest weather since January 2014,” the special weather statement reads.