I have clearly seen your part of LI (southwest corner) miss rains (and snow) often enough. Oddly, I skipped Jones Beach this year bc majors of shoes I’ve gone to past 5 years or so have had rain which to me was unheard of for a long time (90s-like 2012)
I wonder if the North Fork as an area receives less, however. It was my understanding that the north fork received the least precip which is why it’s a suitable area for wineries. Kinda curious as to precip patterns on LI. I know my part of Suffolk (central, North, ~Port Jeff area) clearly gets the most snow the past few decades.