White Christmas
Will San Marcos, TX have a white Christmas?
San Marcos, Texas had snow on the ground on Christmas morning in 0 of the 26 Christmases measured from 1996 to 2025. None of them was white. Almost never.
Measured at San Marcos, under a mile away of San Marcos. 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 San Marcos starts on this page on December 18.