A cold front will move through the area on Wednesday night, and there is a chance of some showers ahead of the front as teams arrive at the track on Wednesday. But once the front moves through, there will be plenty of sunshine and comfortable temperatures. Thursday will be a little breezy behind the front, with a northeast wind of 10 to 15 mph, gusting to 25 mph at times. Temperatures will warm into the upper 70s on Friday, with lighter winds as high pressure builds in. There will be another cold front approaching from the north on Saturday, but it will only increase clouds a little bit, and lower temperatures slightly. There will not be enough moisture for the front to produce any rain as it moves through, so I'm not worried about any rain for the race.
I'll have another update on Thursday, unless there is a significant change to the forecast before then.