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.

Rain Fog/Mist

78°F

26°C

Humidity 90%
Wind Speed N 3 mph
Barometer 29.98 in (1015.1 mb)
Dewpoint 75°F (24°C)
Visibility 5.00 mi
Heat Index80°F (27°C)
Last update 12 May 10:53 pm EDT
Extended Forecast for

Key Biscayne FL

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 80. Southwest wind around 6 mph. Chance of precipitation is 40%.

    Low: 80 °F

    Scattered
    T-storms

  • Wednesday

    Wednesday: Scattered showers and thunderstorms after 2pm. Partly sunny, with a high near 86. West wind 7 to 10 mph. Chance of precipitation is 40%.

    High: 86 °F

    Partly Sunny
    then
    Scattered
    T-storms

  • Wednesday Night

    Wednesday Night: Isolated showers and thunderstorms before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 79. West wind around 11 mph. Chance of precipitation is 10%.

    Low: 79 °F

    Isolated
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: Isolated showers, then scattered showers and thunderstorms after 2pm. Sunny, with a high near 86. West wind 6 to 8 mph becoming southwest in the afternoon. Chance of precipitation is 40%.

    High: 86 °F

    Isolated
    Showers then
    Scattered
    T-storms

  • Thursday Night

    Thursday Night: Scattered showers and thunderstorms before 8pm. Mostly clear, with a low around 79. West wind 7 to 10 mph. Chance of precipitation is 30%.

    Low: 79 °F

    Scattered
    T-storms then
    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 84. Light and variable wind becoming southeast 5 to 9 mph in the afternoon.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 81. Southeast wind 7 to 10 mph.

    Low: 81 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84. East wind 8 to 11 mph. Chance of precipitation is 30%.

    High: 84 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 81. East wind 11 to 14 mph.

    Low: 81 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Scattered showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 80. Southwest wind around 6 mph. Chance of precipitation is 40%.
Wednesday
Scattered showers and thunderstorms after 2pm. Partly sunny, with a high near 86. West wind 7 to 10 mph. Chance of precipitation is 40%.
Wednesday Night
Isolated showers and thunderstorms before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 79. West wind around 11 mph. Chance of precipitation is 10%.
Thursday
Isolated showers, then scattered showers and thunderstorms after 2pm. Sunny, with a high near 86. West wind 6 to 8 mph becoming southwest in the afternoon. Chance of precipitation is 40%.
Thursday Night
Scattered showers and thunderstorms before 8pm. Mostly clear, with a low around 79. West wind 7 to 10 mph. Chance of precipitation is 30%.
Friday
Sunny, with a high near 84. Light and variable wind becoming southeast 5 to 9 mph in the afternoon.
Friday Night
Mostly clear, with a low around 81. Southeast wind 7 to 10 mph.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84. East wind 8 to 11 mph. Chance of precipitation is 30%.
Saturday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 81. East wind 11 to 14 mph.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 82. Breezy.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84. Breezy.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 82. Breezy.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Key Biscayne FL
 25.69°N 80.17°W
Last Update:
4:21 pm EDT May 12, 2026
Forecast Valid:
11pm EDT May 12, 2026-6pm EDT May 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation