An early-season heat wave is expected to build across much of the eastern United States next week, pushing temperatures into ...

A heat wave that spent two weeks baking the western United States is now migrating into the Central and Eastern states, where temperatures running 20 to 30 degrees above average could tie or break ...

A long-duration heat wave is taking shape over the western half of the U.S. and is forecast to stick around in the days ahead. A high-pressure system in place over the West is keeping precipitation ...