It becomes more obvious to people my age. As a kid in the 1960s I kept pretty good records and it was much colder. Climate change has been slow enough that most lay persons don't really notice it. My 92 year old father recently passed away in my home town of Baltimore. There were boxes of old slides from the 50s,60s and 70s. My brother and I were just looking at them and in most winter pictures there was at least some snowcover around the house. Multiple years, different months but way more often than not even the NW suburbs of Baltimore winters with lingering snowcover.