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.

Mostly Cloudy

87°F

31°C

Humidity 67%
Wind Speed SE 9 mph
Barometer 30.00 in (1016.0 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 5 Oct 10:53 am EDT
Extended Forecast for

Key Biscayne FL

  • Today

    Today: Mostly sunny, with a high near 87. Southeast wind around 9 mph.

    High: 87 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 80. Southeast wind around 6 mph becoming southwest after midnight.

    Low: 80 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 10 percent chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 87. South wind 5 to 8 mph.

    High: 87 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 79. Southwest wind around 6 mph. Chance of precipitation is 30%.

    Low: 79 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 87. Southwest wind around 8 mph. Chance of precipitation is 80%.

    High: 87 °F

    Slight Chance
    T-storms then
    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms, mainly between 8pm and 2am. Low around 79. Southwest wind around 6 mph. Chance of precipitation is 80%.

    Low: 79 °F

    Showers then
    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 86. South wind 5 to 7 mph. Chance of precipitation is 70%.

    High: 86 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms, mainly between 8pm and 2am. Mostly cloudy, with a low around 79. South wind around 6 mph. Chance of precipitation is 60%.

    Low: 79 °F

    Showers
    Likely then
    Chance
    T-storms

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 87. Southeast wind 7 to 9 mph.

    High: 87 °F

    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 87. Southeast wind around 9 mph.
Tonight
Mostly cloudy, with a low around 80. Southeast wind around 6 mph becoming southwest after midnight.
Tuesday
A 10 percent chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 87. South wind 5 to 8 mph.
Tuesday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 79. Southwest wind around 6 mph. Chance of precipitation is 30%.
Wednesday
A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 87. Southwest wind around 8 mph. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms, mainly between 8pm and 2am. Low around 79. Southwest wind around 6 mph. Chance of precipitation is 80%.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 86. South wind 5 to 7 mph. Chance of precipitation is 70%.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms, mainly between 8pm and 2am. Mostly cloudy, with a low around 79. South wind around 6 mph. Chance of precipitation is 60%.
Friday
A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 87. Southeast wind 7 to 9 mph.
Friday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 81.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 81. Breezy.
Sunday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 87. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Key Biscayne FL
 25.69°N 80.15°W
Last Update:
4:47 am EDT Oct 5, 2026
Forecast Valid:
11am EDT Oct 5, 2026-6pm EDT Oct 11, 2026
 
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Additional Resources

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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