A polar vortex is slated to sweep most of the continental United States bringing a hazardous freeze to millions of Americans from the Deep South to the Northeast Saturday going into next week.

Seacoast New Hampshire and southern Maine are bracing for the largest snowfall of 2025 to date, expected Sunday night ahead of an Arctic blast.

Winter weather is expected in Maine early next week, followed by frigid temperatures. Forecasters expect snow to accumulate Sunday afternoon into the evening. The Portland area could see anywhere from 4-8 inches,

Portland was forecasted to be about 6 degrees below normal Sunday and Monday, according to the National Weather Service.

An arctic blast is set to bring subzero wind chill temperatures in New Hampshire and Maine. Meteorologists tell us how to prepare.

Moderate” snowfall whitened Caribou, in northern Maine, on Tuesday, January 7, the local National Weather Service (NWS) said.Footage from the NWS in Caribou shows snow falling down in front of the local office.

The NWS has warned of possible snow squalls as Arctic air spreads south and east from the Rockies Friday through next week.

About 63 million people in the U.S. were under some kind of winter weather advisory, watch or warning on Sunday.

A major winter blast of snow, ice, wind and plunging temperatures in the U.S. stirred dangerous travel conditions from central and southern states all the way to the East Coast early Monday, prompting schools and government offices in several states to close.

The snow is likely to fall on Sunday from the Appalachians to New England. New York City may see its largest snowfall in years.

Low pressure will track a little closer to Maine and could bring accumulating snow to the region Sunday night.

Another blast of winter weather is expected in parts of the U.S. in the coming days, including bone-chilling wind in the Northern Plains and unusual snow and ic