I have never gone on Friday, but I did this year, and I had a fantastic day, with lots of sun, but windy. On the downside, not all vendors were unpacked and many of the car show flyers were not out yet.
I went back on Saturday, early, and picked up many more car show flyers. I was able to walk and shop a couple of hours before the rains hit. I got wet, I got cold, and then I got in my car and came home. The temperature must of dropped 15 to 20 degrees when the rains hit. Parking got muddy and slippery pretty quick, too.
The highlight of Spring Jefferson would have been the car show today, but it is much too wet and muddy to even think about driving down to Jefferson today.