The National Climatic Data Center (NCDC) defines a White Christmas as a snow depth of at least 1 inch observed on December 25. This does not mean it must snow on Christmas, but rather, it means that it must either snow 1 inch on Christmas or 1 inch of snow from a previous day must still be on the ground.
On any given year, what is the probability of seeing a White Christmas in the Panhandles? The map below shows the probabilities to be less than 10 percent across most of the area, but there are a few locations that have a probability between 10 and 25 percent. This does not mean is that there is a 10 percent chance of a White Chritmas occurring every year over the Texas Panhandle. Instead, what it does mean is that a White Christmas has been observed 10 percent of the time across our area. At Amarillo, a White Christmas has been observed 12 times since 1892 (about 10 percent of the time), last occurring in 2012.
View the data record for Christmas Day at Amarillo, 1892-2012
Based on climate data from 1892-2012, for Christmas Day at Amarillo, the average high is 48° F, the average low is 23° F, the average precipitation is 0.02", and the average snowfall is 0.18".