I remember my tomato plants were damaged during a heavy frost we had on May 13, 1996. That was my latest frost here on the south shore. And that was on a Monday, I spent the weekend in the Poconos were it snowed and caused tree damage after a severe weather outbreak! That was my latest snowfall and it came after our best winter ever.
I enjoyed May 9, 2020 much more.
I would wait for the week before Memorial Day weekend to plant anything sensitive.