White Christmas
Will Union Square, MA have a white Christmas?
Union Square, Massachusetts had snow on the ground on Christmas morning in 10 of the 24 Christmases measured from 1996 to 2025. The last white Christmas there was in 2017. A coin flip.
Measured at Reading, 10 miles north of Union Square. A white Christmas is an inch or more of snow on the ground at the Christmas morning reading, the line NOAA uses, counted from the station's own daily record.
The forecast for Christmas morning in Union Square starts on this page on December 18.