I'm from Florida originally, and most of the season is over 80 degrees in the midday. Rain is a blessing from God for us. Unless it's getting really thick, trust that the deer will move. You can, like others have said, move really quietly in a good rain, not to mention the noise of the rain falling will mask any sounds you actually do make. Also, the rain tends to kill some of the smell you give off. Win-win. If it gets really heavy, find some thick stuff that you'd get into if you had to be outside in the rain, and push through it real slow. Enjoy!