Enjoy Saturday, because we're shaking things up for the second half of the weekend. In fact, like Friday, Saturday will be one of the oddball days this month, with temperatures above normal. Temperatures in the upper 30s to 40° are once again expected for Saturday.
But Saturday evening (6pm pictured below), a disturbance is moving in dragging another very powerful cold front through the area. Minor amounts of freezing drizzle and light snow are anticipated Saturday night into Sunday morning but the bigger story as this cold front slides through is the door opening for another resurgence of arctic air.
As a result, temperatures will steadily fall, from Saturday evening and continue into Sunday. At the same time, the wind will be expected to pick up, gusting to 35-40 mph on Sunday as an area of high pressure slides in from Canada and squeezes against the back side of our departing area of low pressure.
With temperatures falling below zero around noon, peak wind chills are expected to be nearing -35°.
Wind chills at -35° can cause frostbite to form on exposed skin in as little as 10 minutes. At this point, the National Weather Service will consider issuing a Wind Chill Advisory. Be safe out there on Sunday.
Air temperatures continue to fall all the way until Monday morning, a net drop of around 55° in most places. We'll start in the upper 30s Saturday afternoon, before ending up with temps in the near or exceeding -15° Monday morning.
Should we reach our forecast temperature of -17° Monday morning, it would be the coldest reading in three years, since January 21st, 2011, when the mercury dipped down to -22°.
Storm Tracker 6 Chief Meteorologist