Forecasters say over half the U.S. population could be affected by snow, ice or bitter cold as a winter storm sweeps across the county.

The National Weather Service warned of "life-threatening cold" into Tuesday, with temperatures in northeastern Montana ...

States across the central and eastern U.S. are under extreme heat watches and warnings as the areas face a dangerous heat wave throughout the first half of the week, according to the National Weather ...

Forecasts for snow, gale-force winds and coastal flooding stretch from the Southeast along the Atlantic Coast.