There is some uncertainty about what will happen with the front on Saturday. I'm going with the models that show the front pushing through and being located south and west of COTA, which should mean a dry race day. But there is one model that is keeping the front near the track on Saturday, and producing some showers. I'm not confident enough to jump on that model yet. It does look like there will be more clouds than sun for the race, with comfortable temperatures in the upper 70s.