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

79°F

26°C

Humidity 88%
Wind Speed NE 3 mph
Barometer 30.03 in (1016.9 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 5 Aug 4:53 am EDT
Extended Forecast for

Key Biscayne FL

  • Today

    Today: A 50 percent chance of showers and thunderstorms after 8am. Partly sunny, with a high near 87. Heat index values as high as 101. East wind 8 to 10 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 83. Breezy, with an east wind 14 to 17 mph.

    Low: 83 °F

    Chance
    T-storms and
    Breezy

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly before 4pm. Mostly sunny, with a high near 87. Heat index values as high as 101. Breezy, with an east wind 14 to 16 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 87 °F

    T-storms
    Likely and
    Breezy

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm after 8pm. Partly cloudy, with a low around 83. Breezy, with an east wind 16 to 18 mph. Chance of precipitation is 60%.

    Low: 83 °F

    Breezy.
    T-storms
    Likely then
    Showers
    Likely

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Southeast wind around 14 mph. Chance of precipitation is 70%.

    High: 87 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 84. Breezy, with a southeast wind 13 to 17 mph.

    Low: 84 °F

    Chance
    T-storms and
    Breezy

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 88. Southeast wind around 14 mph.

    High: 88 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 84. East wind 11 to 14 mph.

    Low: 84 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. East wind around 13 mph.

    High: 88 °F

    Slight Chance
    T-storms

Detailed Forecast

Today
A 50 percent chance of showers and thunderstorms after 8am. Partly sunny, with a high near 87. Heat index values as high as 101. East wind 8 to 10 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 83. Breezy, with an east wind 14 to 17 mph.
Thursday
Showers and thunderstorms likely, mainly before 4pm. Mostly sunny, with a high near 87. Heat index values as high as 101. Breezy, with an east wind 14 to 16 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm after 8pm. Partly cloudy, with a low around 83. Breezy, with an east wind 16 to 18 mph. Chance of precipitation is 60%.
Friday
Showers likely and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Southeast wind around 14 mph. Chance of precipitation is 70%.
Friday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 84. Breezy, with a southeast wind 13 to 17 mph.
Saturday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 88. Southeast wind around 14 mph.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 84. East wind 11 to 14 mph.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. East wind around 13 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 84. Breezy.
Monday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 88.
Monday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 84.
Tuesday
Sunny, with a high near 88.
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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:
4:01 am EDT Aug 5, 2026
Forecast Valid:
4am EDT Aug 5, 2026-6pm EDT Aug 11, 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