I did Rocky Point today. It was fine other than the heat.Despite the cloudburst last night, the not-Rocky-Point section of Hartshorne/Claypit connector were in reasonably good shape this evening. I didn't ride lower Grand Tour or Rocky Point, so I can't comment, other than to say that lower GT was probably soggy, and RP was probably okay except for the first section clockwise.
Watch the skies, and it should be okay to ride in the AM provided it doesn't rain overnight.