"We should end up being the coldest location tonight in the Lower 48", Mike Carmon, senior meteorologist at the Mount Washington Observatory, told the New York Times.
As of Saturday morning, the wind was gusting at over 100 miles per hour at the summit, which is 6,288 feet above sea level, according to the observatory's website.
The temperature atop New Hampshire's Mount Washington ended up at a pretty astonishing -36 degrees Fahrenheit (-37.7 degrees C), making it one of the coldest places on the planet.
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Frigid conditions have also gripped other parts of the Northeast and are expected to last most of the weekend.
A museum at the summit showcases that history, including a 231 miles per hour wind gust that for decades was the highest recorded wind speed on earth.
Both Philadelphia and NY were shivering at 8 degrees.
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Its summit forecast mid-morning Saturday was a high in the mid-20s below, and a wind chill factor of 70-80 below, and potential for wind gusts up to 105 miles per hour.
The wind chills could bring jaw-clenching temperatures further north.
In New Jersey, many people chose to stay home instead of dealing with single-digit temperatures. The National Weather Service says people living near Vermont's mountains could experience what seems like minus 50 degrees.
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Comparatively, there were 231 total deaths, including 148 pedestrians, 18 cyclists, 33 motorcyclists and 46 drivers, in 2016. Like cyclists, there was an increase in vehicle deaths - 57 people in a auto died last year, up from the prior year.