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

81°F

27°C

Humidity 74%
Wind Speed Vrbl 5 mph
Barometer 30.12 in (1019.8 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 5 Aug 7:53 pm EDT
Extended Forecast for

Key Biscayne FL

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 84. Northeast wind 7 to 9 mph.

    Low: 84 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 4pm. Mostly sunny, with a high near 89. Heat index values as high as 105. Northeast wind 8 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 7pm. Partly cloudy, with a low around 83. East wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 83 °F

    T-storms
    Likely

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 2pm, then showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 87. Heat index values as high as 100. East wind around 9 mph. Chance of precipitation is 70%.

    High: 87 °F

    Showers
    Likely then
    T-storms
    Likely

  • Thursday Night

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

    Low: 84 °F

    T-storms
    Likely

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 11am, then showers and thunderstorms likely after 11am. Mostly sunny, with a high near 88. Southeast wind 8 to 10 mph. Chance of precipitation is 70%.

    High: 88 °F

    T-storms
    Likely

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 83. Southeast wind 8 to 10 mph.

    Low: 83 °F

    Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely. Partly sunny, with a high near 88. Southeast wind around 11 mph. Chance of precipitation is 70%.

    High: 88 °F

    T-storms
    Likely

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 84. Southeast wind 8 to 10 mph.

    Low: 84 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 84. Northeast wind 7 to 9 mph.
Wednesday
Showers and thunderstorms likely, mainly after 4pm. Mostly sunny, with a high near 89. Heat index values as high as 105. Northeast wind 8 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and thunderstorms likely, mainly before 7pm. Partly cloudy, with a low around 83. East wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers likely and possibly a thunderstorm before 2pm, then showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 87. Heat index values as high as 100. East wind around 9 mph. Chance of precipitation is 70%.
Thursday Night
Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 84. East wind around 8 mph. Chance of precipitation is 60%.
Friday
Showers likely and possibly a thunderstorm before 11am, then showers and thunderstorms likely after 11am. Mostly sunny, with a high near 88. Southeast wind 8 to 10 mph. Chance of precipitation is 70%.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 83. Southeast wind 8 to 10 mph.
Saturday
Showers and thunderstorms likely. Partly sunny, with a high near 88. Southeast wind around 11 mph. Chance of precipitation is 70%.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 84. Southeast wind 8 to 10 mph.
Sunday
Showers and thunderstorms likely. Mostly sunny, with a high near 88. Chance of precipitation is 60%.
Sunday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 84.
Monday
Showers and thunderstorms likely. Sunny, with a high near 88. Chance of precipitation is 60%.
Monday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 84. Chance of precipitation is 60%.
Tuesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
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ABOUT THIS FORECAST

 
Point Forecast:
Key Biscayne FL
 25.69°N 80.17°W
Last Update:
5:17 pm EDT Aug 5, 2025
Forecast Valid:
8pm EDT Aug 5, 2025-6pm EDT Aug 12, 2025
 
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