Add Yahoo as a preferred source to see more of our stories on Google. You’d be forgiven for being skeptical of a cold, snowy December. Recent years have often brought late starts to winter. The last ...

Add Yahoo as a preferred source to see more of our stories on Google. It still feels summery in Mississippi with daytime highs in the 80s and relatively high humidity. But nights are getting a hint of ...

The northern U.S. is bracing for bone-chilling cold as a weakened polar vortex pushes Arctic air south. The planet's most extreme cold air will be barreling into the central and eastern United States ...

This story has been edited to correct an error. Judah Cohen is affiliated with the Massachusetts Institute of Technology. Our old wintertime friend the polar vortex ...

Federal forecasters are tracking a weakening polar vortex that could funnel another round of Arctic air into the Northeast during the second half of March 2026. Diagnostic data from NOAA’s Climate ...