Squires Milkbar near Sherburn in Elmet (popular biker haunt on other nights)
The meet is from 7pm onwards which gives plenty of time to have a bit of something to eat / drink and a chat before it starts getting dark.
The milkbar has an on site cafe / pub serving food, hot & cold drinks, bar, toilets arcade machines etc... loads of seating inside and out so don't worry about the weather.
It's located just outside Sherburn-in-Elmet which is 5 minutes from the A1 on the A1222, more info on the venue below:
http://www.squires-cafe.co.uk/assets/images/map2.gif
Sat Nav seems to be confused by the recent changes to the A1 so don't be suprised if it tries to take you over fields 
Pics from a couple of old meets to give you an idea of what shows up: