When will the snow end in Providence?

FiveThirtyEight, so often an inspiration for data journalism, recently published a piece looking at weather data to show when the last snowfall might be in the 50 largest cities in the United States. Unfortunately, Providence doesn’t make that cut. So I took the liberty of replicating their method to figure out when we can expect to see our last snowfall here:
Half of all winters since 1964 have had their last snow sometime between March 1st and March 29th. The average date for a last snow in Providence was March 17, which happens to be tomorrow. Here’s hoping.