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.

Light Rain

75°F

24°C

Humidity 88%
Wind Speed S 6 mph
Barometer 30.02 in (1016.7 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 12 Mar 5:53 am EDT
Extended Forecast for

Key Biscayne FL

  • Today

    Today: Mostly sunny, with a high near 81. Breezy, with a south wind 13 to 16 mph, with gusts as high as 20 mph.

    High: 81 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a low around 75. Southwest wind 7 to 14 mph becoming northwest after midnight.

    Low: 75 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly after 8am. Partly sunny, with a high near 79. Northeast wind 8 to 10 mph becoming southeast in the afternoon.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 75. Southeast wind around 9 mph. Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 80. Southeast wind 8 to 11 mph.

    High: 80 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 76. East wind 10 to 13 mph.

    Low: 76 °F

    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 80. Southeast wind around 15 mph, with gusts as high as 18 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. Breezy, with a southeast wind 11 to 18 mph. Chance of precipitation is 60%.

    Low: 76 °F

    Showers
    Likely then
    Chance
    T-storms and
    Breezy

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 81. Breezy, with a south wind around 16 mph.

    High: 81 °F

    Breezy.
    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 81. Breezy, with a south wind 13 to 16 mph, with gusts as high as 20 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a low around 75. Southwest wind 7 to 14 mph becoming northwest after midnight.
Friday
A 40 percent chance of showers and thunderstorms, mainly after 8am. Partly sunny, with a high near 79. Northeast wind 8 to 10 mph becoming southeast in the afternoon.
Friday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 75. Southeast wind around 9 mph. Chance of precipitation is 30%.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 80. Southeast wind 8 to 11 mph.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 76. East wind 10 to 13 mph.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 80. Southeast wind around 15 mph, with gusts as high as 18 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. Breezy, with a southeast wind 11 to 18 mph. Chance of precipitation is 60%.
Monday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 81. Breezy, with a south wind around 16 mph.
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. Mostly cloudy, with a high near 76.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Windy.
Wednesday
A 30 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:
3:51 am EDT Mar 12, 2026
Forecast Valid:
6am EDT Mar 12, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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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