White Christmas Is Rare -- But At Least It's Affordable

Dreaming of a white Christmas? Keep dreaming. For most Americans, chances aren’t great for Christmastime snow. From our perch in snowless San Francisco, we crunched detailed weather data from the National Climatic Data Center for 1980–2013 to discover where Christmases tend to be white. But why should you listen to me, a Jewish guy in California? As it happens, I know from snow. I grew up in Rochester, NY, which is so snowy and overcast that as a child I thought the color of the sky was whit...