7-Day Forecast 25.69°N 80.17°W (Text-Only)
NWS Forecast for: Key Biscayne FL
Issued by: National Weather Service Miami - South Florida
Last Update: 11:31 pm EDT Jul 12, 2025




Tonight: A 20 percent chance of showers and thunderstorms after 3am. Partly cloudy, with a low around 79. South wind around 6 mph.

Sunday: A 40 percent chance of showers and thunderstorms, mainly after 9am. Mostly sunny, with a high near 88. Heat index values as high as 100. Light and variable wind becoming southeast around 6 mph in the afternoon.

Sunday Night: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 78. Southwest wind around 7 mph becoming northwest after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Monday: Showers likely and possibly a thunderstorm before 8am, then showers and thunderstorms likely between 8am and 5pm, then showers and possibly a thunderstorm after 5pm. High near 86. West wind around 7 mph becoming south in the afternoon. Chance of precipitation is 80%.

Monday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Low around 77. Southwest wind around 8 mph. Chance of precipitation is 80%.

Tuesday: Showers likely and possibly a thunderstorm before 11am, then showers and thunderstorms likely after 11am. Mostly cloudy, with a high near 85. South wind 8 to 10 mph. Chance of precipitation is 70%.

Tuesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 80. Southeast wind 10 to 13 mph.

Wednesday: Showers and thunderstorms likely. Partly sunny, with a high near 85. Southeast wind around 14 mph. Chance of precipitation is 60%.

Wednesday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 82. Southeast wind 10 to 14 mph.

Thursday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. Breezy.

Thursday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 83.

Friday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87. Breezy.

Friday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 83.

Saturday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.



Key Biscayne FL
 25.69°N 80.17°W

Visit your local NWS office at: https://www.weather.gov/mfl