I love winter track days because they're cheap, they can surprise you weather wise, they're rarely fully booked and from my experience the idiots rarely turn up for the winter days.
One of the best td's I've ever done was the day after boxing day at Donington about four years ago.
My track day buddy bottled it last minute because they gave snow but I still went.
It was 4 degrees but clear blue skys all day and only 17 people in the fast group and it only cost me £69!
If you book a No Limits track day and the circuit cancel it because of snow or ice, you get your money back which has happened to me in the past.
Bit of advice for you though.
If your planning on making a habit of winter track days by a Jonny Jacket and some wets!
Took me a very long time to get my head around the idea of riding with wets but once you've got it, WOW, bring on the rain while everyone else sits in the garage looking fed up while you get the track all to yourself!
