White Christmas
Will Cupertino, CA have a white Christmas?
Cupertino, California had snow on the ground on Christmas morning in 0 of the 25 Christmases measured from 1996 to 2025. None of them was white.
Measured at Mt Diablo Junction, 39 miles north of Cupertino. That station is far enough from Cupertino, or high or low enough, that this is its own record rather than a call for the town. 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 Cupertino starts on this page on December 18.