Friday continues to look like a beautiful day at the track, with high pressure over the area providing sunny skies and high temperatures in the lower 80s.
Cloud cover will increase on Saturday, mainly in the afternoon as daytime heating creates some instability. With this instability will come some pop-up showers and thunderstorms. Coverage is expected to be scattered, so they could miss the track entirely. If a shower or storm does pass over the track, it should be short-lived, and the impact should be low.
A cold front will approach the area on Saturday night, and this is the period that has the highest chance of rain. Fortunately, there won't be any on-track activity during this time, although campers should be prepared to get wet.
The cold front should move through the area on Sunday morning. This is faster than the previous forecast, which is why I have lowered the chance of rain on Sunday. Still, some scattered showers and thunderstorms could linger through the morning, depending on the exact timing of the frontal passage. Like Saturday, I think any showers should be short-lived with low impacts on the race.