I'm an hour behind this morning thanks to the change to Daylight Savings Time (down with DST!), so I apologize for posting this a little late.
The current radar (9:45 am) shows an area of rain well offshore that is moving toward the east-northeast.
Here's a model-simulated radar image at 3 pm this afternoon, around the time that the Prielli World Challenge race is scheduled to start:
I'd put the chance of seeing rain during the races at around 25%.
High temperatures today will be around 78 degrees, with winds from the southwest around 10-15 mph.
For live radar, check our St. Pete radar link that the top of the page.