If that's not a racist thing to call it, it's what we're having now. I made it up, but it's defined as when the weather goes back below zero after the first commercial patio day. And we went to the Firkin's patio last Friday.
Indian winter is nice for running, though. There's a construction site on my run, and a lot of mud. Today it was nicely firmed up, though I had to run around, not through, because they were working (on a Saturday!). I guess they're behind schedule already.