White Christmas
Will Janesville, CA have a white Christmas?
Janesville, California had snow on the ground on Christmas morning in 3 of the 21 Christmases measured from 1996 to 2025. The last white Christmas there was in 2021. Rarely.
Measured at Susanville 2sw, 11 miles northwest of Janesville. 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 Janesville starts on this page on December 18.