Summit conditions at Mount Washington were so brutally cold Saturday morning the temperature tied for the second coldest on Earth, according to Mount Washington Observatory.
The temperature hit minus 36 degrees Fahrenheit — with a wind chill of minus 90 (minus 68 degrees Celsius), according to the educational and research institution in New Hampshire.
“We basically just start saying it’s stupid cold outside,” Mike Carmon, senior meteorologist at Mount Washington Observatory, told The New York Times.
The summit of Mount Washington sits at 6,288 feet above sea level.
Frigid conditions have also gripped other parts of the Northeast and are expected to last most of the weekend. Temperatures were in the single digits from Philadelphia to Boston on Saturday morning and expected to fall closer to zero Saturday night, with wind chills making it feel like minus 10 degrees to minus 20 degrees.
In Burlington, Vermont, the temperature was minus 1 Saturday morning, with a wind chill of minus 30. It was 8 degrees in Philadelphia and New York City, with wind chills ranging from minus 9 to minus 11.
![Northeast U.S. Digs Out After "Bomb Cyclone" Snowstorm](https://cbsnews3.cbsistatic.com/hub/i/r/2018/01/06/bd92d582-e31e-45bf-b620-64d53d228a0b/resize/620x/0cc5706c21426da38c53099c651295c7/ny.jpg#)
View Gallery
Golf course sand traps sit covered in snow on January 5, 2018 near White Plains, United States.
John Moore/Getty Images
© 2018 CBS Interactive Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.