Mapping The Chances Of A White Christmas

Mapping The Chances Of A White Christmas A white Christmas is one of those holiday experiences that feels universal-until you look at the weather history and actual odds of snowfall on Christmas Day across the United States. This map, via Visual Capitalist's Niccolo Conte, shows the historic probability across the U.S. of seeing at least one inch of snow on the ground on December 25, using data from the NOAA National Centers for Environmental Information (NCEI) is based on the latest U.S. Climate Normals (1991-2020). These “normals” are three-decade averages built from observations at nearly 15,000 stations, offering a consistent baseline for what’s typical in different parts of the country. Latitude Matters Most For a Snow on Christmas Day If you want the simplest rule of thumb for a white Christmas, head north. The northern Plains, Upper Midwest, and large stretches of the interior Northeast generally sit in higher probability bands than the rest of the country. The data table below features state averages of NOAA’s full 5,000+ row dataset of specific station probabilities of at least one inch of snow: State Average probability of at least one inch of snow on Christmas day Alabama 0.1% Alaska 84.3% Arizona 4.1% Arkansas 1.3% California 4.4% Colorado 48.7% Connecticut 35.2% Delaware 6.5% Florida 0.0% Georgia 0.4% Hawaii 0.0% Idaho 62.1% Illinois 27.2% Indiana 26.0% Iowa 46.9% Kansas 15.0% Kentucky 6.6% Louisiana 0.1% Maine 74.4% Maryland 11.2% Massachusetts 35.8% Michigan 64.8% Minnesota 75.2% Mississippi 0.2% Missouri 13.7% Montana 56.7% Nebraska 35.1% Nevada 17.8% New Hampshire 70.1% New Jersey 13.7% New Mexico 11.3% New York 55.9% North Carolina 3.1% North Dakota 77.3% Ohio 26.8% Oklahoma 3.1% Oregon 14.4% Pennsylvania 34.2% Rhode Island 26.9% South Carolina 0.6% South Dakota 55.5% Tennessee 2.8% Texas 0.8% Utah 46.2% Vermont 76.9% Virginia 8.6% Washington 26.9% West Virginia 26.8% Wisconsin 66.3% Wyoming 56.0% Areas around the Great Lakes can also improve their odds thanks to lake-effect snow, which can build persistent snowpack when cold air is in place. Meanwhile, the further south you go, the more quickly the map shifts into darker shades-signaling that a white Christmas is historically uncommon. Mountains Upgrade White Christmas Probabilities Elevation can change the forecast more than any state line. The Rockies and the Sierra Nevada stand out as some of the most reliable places for holiday snow cover, with many high-altitude areas reaching the upper probabilities of Christmas Day snowfall . The Cascades and ranges across Idaho also show strong odds, reinforcing how quickly temperatures drop with height. Even in the East, the Appalachians make a visible difference-higher terrain can hold onto snow that the surrounding lowlands doesn’t. Why the South and Coasts Often Miss White Christmas Across the Gulf Coast, Deep South, and much of the Sun Belt, the map largely sits in the 0-10% range. Warmer winter temperatures mean snow is rarer to begin with-and even when it does fall, it’s less likely to stick around long enough to still be on the ground by Christmas morning. Coastal climates often tilt...

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