Our temps really dropped here, too last night after the storm. It's only 64 here now and it's been highs in the upper 80's to 90's for months.
We LOVED going to the MK the day that Isaac passed by. We had our rain gear and umbrellas and there was hardly anyone in the park - everything was a walk-on until the afternoon. It was very humid, but no sunscreen to worry about and it was amazing walking into the park in front of Tony's and City Hall and we were the only ones for a few minutes. If you have coats, hats and waterproof shoes, go to the parks! (As long as there isn't lightening

) They even take Photopass photos, which was lots of fun.