Guess What’s Coming to the Arena at the Nevada County Fair? February 23, 2018 | wendy Guess what’s coming to the 2018 Nevada County Fair? Thursday night of the Fair in the Arena! Categories: Events and Nevada County Fair.Tags: 2018 Nevada County Fair, arena, Arena Events, arena fun, Bushels of Fun, Fairgrounds, Grass Valley, motor sports, Nevada City, Nevada County, and tractor pulls.