X2 on Dick B's comments. We spend our winters near the Withlachochee trail. It's a great trail. That said, I can't imagine being anywhere near the area, in mid-summer. 100 degrees and/or 100% humidity isn't something I would do intentionally, which is why we ride the northern half of the states, once spring rolls around.
Last year we did a month of Indiana, Illinois, Iowa and South Dakota. We stuck to rail trails, spent a few days in each location, and had a great time. Plenty of ways to do the research and reviews online. We are members of the railstotrails.org which has great info. for finding trails to suit your needs. Have a great summer.