Low pressure will make its way across the upper Midwest on Saturday, briefly raising temperatures to a level more typical for the end of March. The milder air will arrive on southwesterly winds that may feature gusts as high as 50 mph. Readings topping the 50-degree mark are expected to reach the area by afternoon, but wintry conditions will not be that far removed. The same system is forecast to lay a swath of heavy snow across northern portions of Minnesota and Wisconsin. Saturday is likely to be our mildest day of the coming week. Much colder air is to pour into the area by Saturday night, sending temperatures plummeting some 30 degrees by Easter morning. Temperatures are then to forecast to average about 11 degrees below normal through next weekend.