79F/26C when I did my part to raise McDonald's stock value.
I've never had a leather jacket that sounded crinkly, but, I do know the sound you are talking about. Ahh, that brings back memories. I'm glad it doesn't snow here.
The other sound I find rather interesting is when it is raining, and city busses drive by on a road between buildings. I have never figured out what creates that particular sound.