TODAY...Partly sunny. Showers likely with a chance of thunderstorms (chance of rain 70 percent) for the Upper Keys, and a chance of showers and thunderstorms (chance of rain 50 percent) for the Middle and Lower Keys. Highs in the upper 80s in the Upper Keys, and near 90 in the Middle and Lower Keys. Light and variable winds, becoming northwest to north near 5 mph in the Middle and Lower Keys in the afternoon.