Are you dreaming of a white Christmas? The chances of that happening are revealed in an updated map from NOAA’s National Climatic Data Center (NCDC).

The map shows the climatological probabilities of a white Christmas across the United States.

Based on the most recent 1981-2010 Climate Normals, the Probability of a White Christmas map shows the climatological probability (in percent) that a snow depth of at least 1 inch will be observed on December 25.

Not surprisingly, the highest probabilities are in northern and mountainous areas of the country (see below):

In the words of NCDC:

The actual conditions this year may vary widely from these probabilities because the weather patterns present will determine the snow on the ground or snowfall on Christmas day. These probabilities are useful as a guide only to show where snow on the ground is more likely.”

Time to check out I.I.I. tips on winter proofing your home.

See NCDC’s U.S. Daily Snowfall map to keep track of the snowfall across the U.S. on a daily basis.