New York -57°F/-49°C February 18, 1979 Old Forge
Vermont -50°F/-46°C December 30, 1933 Bloomfield
New Hampshire -47°F/-44°C January 29, 1934 Mount Washington
Maine -50°F/-46°C January 16, 2009 Big Black River
Right now here are lowest temps on weatherunderground
New York - Saranac Lake -31 °F
Vermont - Saint Johnsbury -17.2 °F
New Hampshire - Mount Washington -33 °F
Maine - Frenchville -14.0 °F
So it looks like Mt. Washington New Hamsphire is just 14 °F from the State record. And Saranac Lake New York is just 26 °F from the state record. Mt. Washington could make a run. Got 4 hours to go.
Massachusetts -35°F/-37°C January 12, 1981 Chester
Current lowest temperature on weather underground
Massachusetts - New Salem -13 °F
Just 22 °F from a record State low.
It warmed back up to -29 on Mt Washington after you posted. The polar vortex moved east, and that’s what determines the temperature, not the diurnal cycle. But there was one interesting weather feature this morning, the dewpoint was 62 below zero. That’s basically what you might see flying above 30,000 feet at the upper edge of the troposphere. Basically it means Mt Washington was practically sticking into the stratosphere thanks to compression of the troposphere.