Since 1956 there have been 4 10 plus inch snowfalls in March in NYC.
Near misses April 6 1982 with 9.6, March 22 1967 9.0 inches , March 21, 2018 8.4, March 2 2009 8.3, March 14 2017 7.6, March 5 2015 7.5. Most of these at 10 inches recorded somewhere within the city boundaries. It’s not as rare as everyone seems to believe. People have short memories.