Some parts of the U.S. could see triple-digit temperatures over the weekend, while severe storms threaten other areas, according to forecasters.

Chief Meteorologist Dave Nussbaum says to be Weather Aware Saturday through Monday for a threat of strong to severe storms each day with gusty winds, hail, and heavy rain. More storms are expected next week with downpours.

Thunderstorms could threaten motor sports activities at Charlotte Motor Speedway during Memorial Day, forecasters say. Rain, though, should hold off at Indianapolis.