Weather forecast for: Key Biscayne FL
Last Update: 4:01 pm EDT Sep 6, 2026
This Afternoon: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88. Heat index values as high as 103. South wind around 6 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight: A chance of showers and thunderstorms before 1am, then a slight chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 82. South wind 6 to 8 mph becoming west after midnight. Chance of precipitation is 30%.
Labor Day: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 89. Heat index values as high as 106. Light and variable wind becoming south 5 to 8 mph in the afternoon.
Monday Night: A 40 percent chance of showers and thunderstorms, mainly between 2am and 5am. Partly cloudy, with a low around 82. West wind around 6 mph becoming light and variable after midnight.
Tuesday: Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 89. Southeast wind 3 to 8 mph. Chance of precipitation is 60%.
Tuesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms, mainly between 8pm and 2am. Partly cloudy, with a low around 83. East wind 6 to 9 mph. Chance of precipitation is 60%.
Wednesday: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 89. East wind around 11 mph.
Wednesday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 84. East wind 10 to 14 mph.
Thursday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. Southeast wind 9 to 11 mph.
Thursday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 83.
Friday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Friday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 83.
Saturday: Showers and thunderstorms likely. Mostly sunny, with a high near 89. Chance of precipitation is 60%.
Saturday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 83.
Sunday: Showers and thunderstorms likely. Mostly sunny, with a high near 89.
WeatherWorld.com
Village of Key Biscayne, FL
