A major flip of the weather pattern will allow temperatures to shoot through the roof in the Northeast as some locations may hit 90 degrees Fahrenheit during the last days of April, AccuWeather meteorologists say. Millions yearning for warm sunshine and a taste of summertime will soon get their wish, as much of the region says goodbye to chilly air-at least for a little while. "Despite some clouds, cool air and a little shower activity to start the weekend, it has been relatively dry recently an