National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Miami, Miami International Airport (KMIA)

Lat: 25.79°NLon: 80.32°WElev: 10ft.

A Few Clouds

82°F

28°C

Humidity 63%
Wind Speed SE 12 mph
Barometer 30.10 in (1019.3 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 11 Mar 3:53 pm EDT
Extended Forecast for

Key Biscayne FL

  • Tonight

    Tonight: Partly cloudy, with a low around 76. East wind 11 to 13 mph.

    Low: 76 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 82. South wind 11 to 14 mph.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 74. Southwest wind 7 to 13 mph.

    Low: 74 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 80. North wind 7 to 10 mph becoming east in the afternoon.

    High: 80 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 75. Southeast wind around 8 mph.

    Low: 75 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am. Partly sunny, with a high near 80. Southeast wind 7 to 11 mph. Chance of precipitation is 60%.

    High: 80 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75. East wind 8 to 11 mph.

    Low: 75 °F

    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 80. Southeast wind around 15 mph. Chance of precipitation is 60%.

    High: 80 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 76. Southeast wind 10 to 15 mph. Chance of precipitation is 60%.

    Low: 76 °F

    Showers
    Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 76. East wind 11 to 13 mph.
Thursday
Mostly sunny, with a high near 82. South wind 11 to 14 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 74. Southwest wind 7 to 13 mph.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 80. North wind 7 to 10 mph becoming east in the afternoon.
Friday Night
A 40 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 75. Southeast wind around 8 mph.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am. Partly sunny, with a high near 80. Southeast wind 7 to 11 mph. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75. East wind 8 to 11 mph.
Sunday
A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 80. Southeast wind around 15 mph. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 76. Southeast wind 10 to 15 mph. Chance of precipitation is 60%.
Monday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 50%.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 76.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Windy.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 73. Windy.
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ABOUT THIS FORECAST

 
Point Forecast:
Key Biscayne FL
 25.69°N 80.17°W
Last Update:
4:11 pm EDT Mar 11, 2026
Forecast Valid:
4pm EDT Mar 11, 2026-6pm EDT Mar 18, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation