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

Jan. 5—The eastern U.S. is on track for a frigid week as a polar vortex stretches south, bringing below-normal temperatures to Maine. Starting Monday, much of the eastern two-thirds of the ...

A major winter blast of snow, ice, high winds and plunging temperatures are stirring up dangerous conditions across the U.S.

Over 120 million Americans will face extreme cold, with temperatures potentially reaching minus 40 degrees Celsius.

The polar vortex of ultra-cold air usually spins around ... a weather service meteorologist based in Gray, Maine. The cold was expected to grip the Eastern Seaboard as far south as Georgia ...