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.

Partly Cloudy

92°F

33°C

Humidity 56%
Wind Speed SE 10 G 21 mph
Barometer 29.99 in (1015.4 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 28 Aug 4:53 pm EDT
Extended Forecast for

Key Biscayne FL

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 2am. Mostly clear, with a low around 84. East wind 9 to 13 mph.

    Low: 84 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. Heat index values as high as 106. East wind around 10 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms, mainly between 10pm and 4am. Partly cloudy, with a low around 85. Breezy, with an east wind 11 to 16 mph.

    Low: 85 °F

    Chance
    T-storms and
    Breezy

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. Heat index values as high as 104. East wind 9 to 13 mph.

    High: 89 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 85. East wind 11 to 13 mph.

    Low: 85 °F

    Chance
    T-storms

  • Monday

    Monday: Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 89. East wind 8 to 10 mph. Chance of precipitation is 70%.

    High: 89 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Monday Night

    Monday Night: Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 84. East wind 10 to 13 mph. Chance of precipitation is 60%.

    Low: 84 °F

    T-storms
    Likely then
    Chance
    T-storms

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly before 2pm. Mostly sunny, with a high near 88. East wind 8 to 10 mph. Chance of precipitation is 60%.

    High: 88 °F

    T-storms
    Likely

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 84. East wind 11 to 13 mph.

    Low: 84 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly after 2am. Mostly clear, with a low around 84. East wind 9 to 13 mph.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. Heat index values as high as 106. East wind around 10 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 40 percent chance of showers and thunderstorms, mainly between 10pm and 4am. Partly cloudy, with a low around 85. Breezy, with an east wind 11 to 16 mph.
Sunday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. Heat index values as high as 104. East wind 9 to 13 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 85. East wind 11 to 13 mph.
Monday
Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 89. East wind 8 to 10 mph. Chance of precipitation is 70%.
Monday Night
Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 84. East wind 10 to 13 mph. Chance of precipitation is 60%.
Tuesday
Showers and thunderstorms likely, mainly before 2pm. Mostly sunny, with a high near 88. East wind 8 to 10 mph. Chance of precipitation is 60%.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 84. East wind 11 to 13 mph.
Wednesday
Showers likely and possibly a thunderstorm before 2pm, then showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 70%.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 84. Chance of precipitation is 60%.
Thursday
Showers and thunderstorms likely. Partly sunny, with a high near 88. Chance of precipitation is 70%.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 83.
Friday
Showers and thunderstorms likely. Mostly sunny, with a high near 88. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Key Biscayne FL
 25.69°N 80.17°W
Last Update:
5:11 pm EDT Aug 28, 2026
Forecast Valid:
5pm EDT Aug 28, 2026-6pm EDT Sep 4, 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