The National Oceanic and Atmospheric Administration (NOAA) has issued a forecast indicating a significant 'heat dome' is likely to develop across the United States in Spring 2026. This weather phenomenon, characterized by a persistent high-pressure system trapping hot air, is expected to bring unusually high temperatures and dry conditions to large portions of the country. The forecast specifically highlights the western U.S., the Plains, and parts of the South and Midwest as areas that will be particularly affected by above-normal temperatures from April through June.