RALEIGH — Abnormally cold air is set to move into the Triangle overnight Thursday and to hang around for at least a couple of days.
Temperatures will be running almost 20 degrees below normal on Friday, the National Weather Service said, and will stay well below normal Saturday under the influence of frigid air being swept in by winds from the northwest.
That cold air will plow into the area late Thursday and overnight, riding winds of 20 mph or more and taking readings down the mid-20s in northern areas and low 30s in southeastern areas by Friday morning, forecasters said.
Friday highs will range from the low to mid 30s in the north to perhaps 40 in the south, and then Friday night will plunge the area into the teens.
Saturday highs will be in the low to mid 40s.
Normal for the first two weeks of January is between 50 and 51 degrees, weather records show.