Heritage Park Pre-ride

I did my first 24 hour solo at Heritage the year the hurricane came through...it was insane but a lot of fun. There are several new sections but the course is still as bumpy and challenging as ever. There is a lot of climbing, I think, and lap after lap at a race pace is tough. The current forecast is for 80% chance of rain and a HIGH of 52..what???? It's like 70* and sunny today! I'm being optimistic and pulling for the 20% chance of dry..I'm even OK with a little drizzle...but please no big rain!!! I really can't afford a new drivetrain (mine is barely holding on as it is)...there have been some technical difficulties with receiving the new bikes so this one has to survive just a little longer!