Our local National Weather Service forecast office in Sterling Virginia has developed a presentation on White Christmas in Washington or Baltimore?  I’ll summarize. You can think of a White Christmas as either having snow on the ground, or snow falling Christmas Day. The climatological chance for snow on the ground is 15 % or about one in six. The last one was in 2009 when we had 7” - and much more was to come that winter! It’s half as likely to have snow falling on Christmas Day - 8 % or about 1 in 12. That last happened ten years ago in 2002, where we got 0.2” of snow on Christmas.

Another week with a few days of rain that totalled not so much.  My rain gauge in Lorton recorded the following precipitation at 6am on the day indicated for the previous 24 hours: