MILWAUKEE — Another band of arctic air began creeping into northern United States on Monday, bringing a wave of frigid temperatures that could linger for most of the week across the upper Midwest and New England.
Temperatures plunged below zero in North Dakota and northern Minnesota on Monday morning. The cold front was expected to sweep south into Iowa and as far east as Maine by Tuesday night, and remain through Thursday.
The blast will lead to a swath of subzero temperatures, with highs in the single digits and wind chills of minus 20 or colder, said Paul Collar, a meteorologist with the National Weather Service.
‘‘It’s not to the extent of the last outbreak but it’s still bitterly cold,’’ he said, referring to the recent polar vortex that sent temperatures plunging well below zero across much of the country. Some areas of across the US-Canada border could see nighttime lows in the negative double digits in the next few days, he said.
Portions of Minnesota, Vermont, New Hampshire, and Maine could see wind chill factors of 34 degrees below zero or colder.