Worcester fell to minus 9 degrees Sunday, setting a record low temperature, the National Weather Service said.
The previous low for Jan. 7 was set in 1942, when the temperature was minus 5 degrees.
However, the blast of arctic air that engulfed portions of the East Coast and broke cold temperature records from Maine to West Virginia is expected to give way to a warmup.
By Monday, area temperatures should become more seasonable. The forecast calls for a high of 28 degrees, with a chance of snow in the afternoon. The mercury will continue to rise and the area could see temperatures in the high 40s by Thursday and as high as the low 50s on Friday.
Many Northeast residents endured jaw-clenching temperatures and brutal wind chills over the weekend as cleanup continued from the storm that dropped as much as 18 inches of snow in some places on Thursday.
Providence, which dropped to minus 3, also set a record low, as did Hartford, where the temperature dropped to minus 9, smashing a 1912 record.
Boston tied a low-temperature record set more than a century ago, in 1896, of minus 2.
Record-low temperatures were also set in parts of West Virginia.
The temperature registered minus 37 Saturday at the Mount Washington Observatory in New Hampshire, one of the coldest places on the planet. The wind chill was minus 93. It tied with Armstrong, Ontario, as the second coldest spot in the world.
Meteorologist Mike Carmon said people at the observatory were "layering up as a much as we can."
Still some movement in the low temperatures. Windsor Locks chilled to -9 at 637 AM. And Providence dipped to -3 at 703 AM. Boston holds at -2 and Worcester at -9. pic.twitter.com/v0hH3dI7HQ
— NWS Boston (@NWSBoston) January 7, 2018