Today could feel like one of the coldest days in decades. A wind chill advisory remains in effect for Shelton and the rest of southwestern Connecticut through 6 p.m. on Tuesday, Jan. 7. The wind chill could make it feel 15-below-zero on Tuesday \u2014 after yesterday\u2019s high of 55. Winds are expected to be 20 to 30 mph with gusts up to 45 mph. The temperature in Shelton was 5 degrees as of 8 a.m. on Tuesday, with a wind chill factor of -11. The air temperature high is not expected to surpass 12 degrees in the city Tuesday, despite sunny skies. The overnight low Tuesday into Wednesday is forecast to be 4 degrees, with wind chills of -11. \u201cProlonged exposure to the bitter cold and wind could lead to frostbite and hypothermia,\u201d the National Weather Service (NWS) warned. Black ice warning The rabidly falling temperatures over the past 24 hours \u2014 drops of 1 to 4 degrees an hour since 8 a.m. on Monday \u2014 have caused moisture on roadways and sidewalks to freeze and create black ice. \u201cThis will mainly be an issue on secondary roads,\u201d the NWS said.