Fair enough. I am generally willing to concede March 1st - 15th as winter in the DC beltway area but after the 15th... we need luck. Of course there was 2014 (St. Patrick's Day), and then in 2018, we had snow March 21 which stuck around for a day. Here's McKeldin Mall at UMD on the 22nd of March 2018, after we got about 3-4" the day before, I think. 2 years out of the last 12 == enough to not rule it out after the 15th, I guess.