You could use a site like wunderground.com to get an idea of what the weather has been like around that time prior years.
https://www.wunderground.com/history/weekly/us/ny/new-york-city/KLGA/date/2023-12-25
For what it’s worth last few years it’s been chilly but kind of on the warmer side. NYC area hasn’t been hit with a huge amount of snow the last few years either, feels like we only get a few days of snow maybe in January/February nowadays.
John Robbins would have inherited Baskin-Robbins (he was the co-founder’s son). Grew up quite well off and could have been wealthy through the rest of his life but he chose to walk away from the company due to all the industrialized factory farming and general animal cruelty surrounding the dairy industry. Back then ice cream was all dairy products.
Eventually Baskin-Robbins itself was sold to a multi-national corp & was then sold/acquired a few more times.
https://vegnews.com/the-untold-vegan-story-of-baskin-robbins
https://en.wikipedia.org/wiki/John_Robbins_(author)