Much-colder air will be making a return to the area today in the wake of an Arctic front. Temperatures will do no better than the upper 40s early in the day, then will gradually fall during the afternoon despite some sunshine.
The arctic air will really make its presence known tonight, with temperatures falling into the lower 20s under mostly clear skies as high pressure builds into the eastern United States. If any areas of standing water remain in the region, they will freeze, leading to some slick spots.
High pressure will be in control into early next week, leading to dry conditions and a good deal of sunshine. Temperatures will remain well below normal in the upper 30s Sunday and near 40 degrees Fahrenheit Monday. Overnight lows will be in the teens and 20s.
Temperatures will briefly rebound Tuesday out ahead of our next storm system that will be dropping southward out of Canada and across the Southeast and mid-Atlantic, bringing another surge of colder air. This system will bring the region lots of clouds later Tuesday and the chance for a wintry mix of snow, sleet and rain Tuesday, then maybe lingering snow and sleet Wednesday of next week.