Those are the years I see the snowfalls for Mansfield from… like a 4” event in Sept 1986, 1” in 1989 and 2.5” in 1991.
There was 5 measurable September snows in a decade there from early 80s to early 90s… not a single measurable September snow since the 1990s.
Looks like a trace in 2009 but other than that, nothing even remotely close to September’s from 1981 to 1991 when it seems snowfall in that month was almost regular. I’ve seen freezing mist, super-cooled droplet clear icing in September up on the hill, but I always look at those past records like how the hell were they getting 1-4 inch events in September with some frequency.