Talking of White Christmases, 2004 is the only one I would consider to be a true "White Christmas" in my experience, as it had snow both falling and lying. Every other instance of snow on Christmas Day where I've been has been either one or the other. 2009 and 2010 had snow lying, but they were both bright sunny days apart from that. 2020 actually had a snow shower in the afternoon, after a very cold morning. It didn't amount to anything though. 2004 is the only year I have experienced snow both falling and lying on Christmas Day.
As for this silly definition of one snowflake reaching the ground at any point during Christmas Day, I've never understood that. In that case, technically speaking, it could rain all day, then turn a bit sleety at 23:59 and it would count as a "White Christmas". As I say, it's a silly definition and really needs rethinking, but then again they probably do it like that so they can say a White Christmas happens more often than it actually does.
Originally Posted by: Bolty