Meteorologists have urged residents in the Northeast and Midwest to stay indoors on Monday as they will probably face harsh winter conditions
New York has endured its coldest temperatures in six years. The National Weather Service has predicted that parts of the Empire State will only reach a high of 19 degrees Monday.
Forecasters have predicted that Boston temperatures may drop below zero for the first time since 2005.
In Minneapolis, Minn., the cold weather has driven many of the city's homeless into overflow shelters. In Michigan, the temperature dropped so low that one thermometer read even lower than -30 degrees.
The weather is not record-breaking, but it is challenging. Authorities have warned it can be dangerous.
"People get acclimated to living in a situation like this," said Jim Greene, director of Boston's emergency shelter commission. "They don't realize the difference between 20 degrees above and 20 degrees below zero, and just how lethal that can be."
Massachusetts elementary school principals have been advised to hold recess inside on Monday. Homeless shelters have also extended their hours for those trying to seek a break from the weather.
But there may be a slight warming trend on the way. Temperatures in Chicago were predicted to be in the 20s later this week.