White Christmas
Will Rock Valley, IA have a white Christmas?
Rock Valley, Iowa had snow on the ground on Christmas morning in 5 of the 22 Christmases measured from 1996 to 2025. The last white Christmas there was in 2022. Now and then.
Measured at Rock Valley, under a mile away of Rock 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 Rock Valley starts on this page on December 18.