Our county fair used to be in March, the end of the week before Spring Break. Now they've changed it to be the end of January and it's just too soon after Christmas to get excited about. It was changed to give the kids a chance to show their animals before the big stock shows (Ft Worth, San Antonio, Houston). But it has really hurt the arts and crafts participation by folks outside the schools. I haven't done anything with the fair since my kids got out of school.
The State Fair is the end of September thru part of October, but that is also when I'm involved in two Renaissance Festivals, so have not been in several years.