White Christmas
Will Simi Valley, CA have a white Christmas?
Simi Valley, California had snow on the ground on Christmas morning in 0 of the last 30 Christmases (1996 to 2025). None of them was white. Almost never.
Measured at U C L A, 24 miles southeast of Simi Valley. 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 Simi Valley starts on this page on December 18.