MIAMI, Florida – The National Weather Service in Miami forecasts hot temperatures continuing today with a Heat Advisory in effect for all metro areas and portions of interior South Florida on Friday, July 17, 2026. Isolated to scattered showers and storms are possible this afternoon and evening, with the best chances over eastern and metro areas. Any stronger cells may produce gusty winds, heavy downpours, and localized flooding in poor drainage areas. Frequent lightning will be the primary hazard where storms develop. Today’s South Florida Rain Chances Today's South Florida Rain Chances – Valid Friday, July 17, 2026 Rain chances (Friday, July 17, 2026): West Palm Beach: 67% Fort Lauderdale: 59% Miami: 49% Palmdale: 56% Immokalee: 45% Clewiston: 45% Homestead: 41% Naples: 33% Everglades City: 15% Flamingo: 11% NWS Miami South Florida Doppler Radar Major HeatRisk Continues Today High temperatures will rise into the low to mid 90s across most of South Florida. Peak Heat Index Values will range from 102°F to 109°F this afternoon, with the highest readings (up to 109°F) across urban metro areas including Miami, Fort Lauderdale, and West Palm Beach. Maximum Heat Index – Friday Afternoon, July 17, 2026 A Heat Advisory is in effect for portions of Miami-Dade, Broward, and Collier Counties. Miami Weather Forecast Today A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Heat index values as high as 106. South wind 6 to 13 mph. Tonight A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 83. South wind 7 to 11 mph. Saturday A slight chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 89. Heat index values as high as 103. South wind 8 to 13 mph. Chance of precipitation is 20%. Saturday Night Partly cloudy, with a low around 83. South wind around 10 mph. Sunday A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. South wind 10 to 14 mph, with gusts as high as 20 mph. Sunday Night Partly cloudy, with a low around 84. South wind 10 to 13 mph. Monday A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. South wind 10 to 15 mph, with gusts as high as 21 mph. Monday Night A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 84. South wind 10 to 13 mph. Tuesday A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 90. South wind 11 to 13 mph. Tuesday Night Mostly clear, with a low around 84. Wednesday Sunny, with a high near 90.