Massachusetts February 17, 2023 4:38 pm What Are the Northern Lights? The northern lights are a beautiful natural phenomenon, but do you know what causes them? US & World Videos 4:01 Cloudy Sunday before warmup during the week 4:03 Patchy fog and some showers on Sunday morning 4:16 Forecast: Scattered showers overnight, early showers possible Sunday 3:53 Mild temperatures with scattered showers in New England 4:00 Overcast Saturday with scattered showers