The Old Farmer’s Almanac has released its winter outlook, identifying three regions where it predicts a white Christmas: the Northeast, the High Plains and Alaska. The forecast says those areas can expect snow cover on Christmas Day.
The Almanac also points to a chance of snow in the Lower Lakes, Ohio Valley and Pacific Northwest. The Appalachians have a mixed outlook: the southern part has a chance of snow, while the northern part is less likely to see it.
The forecast is less favorable for the Atlantic Corridor, Southeast, Florida, Deep South and Upper Midwest, as well as the Heartland, Texas-Oklahoma, Desert Southwest, Pacific Southwest and Hawaii, where the Almanac does not expect a white Christmas.
The National Oceanic and Atmospheric Administration defines a white Christmas as having at least one inch of snow on the ground on December 25. Snow does not need to fall that day if enough remains on the ground.
The NOAA also publishes a map of historical white Christmas probabilities based on data from 1991 to 2020. That map reflects past conditions rather than this year’s forecast.
Sources: Tom's Guide.