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.

A Few Clouds

78°F

26°C

Humidity 85%
Wind Speed S 5 mph
Barometer 29.91 in (1012.9 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 13 May 2:53 am EDT
Extended Forecast for

Key Biscayne FL

  • Overnight

    Overnight: Mostly cloudy, with a low around 80. South wind around 6 mph.

    Low: 80 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 86. Southwest wind 7 to 11 mph.

    High: 86 °F

    Partly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 79. Breezy, with a west wind 11 to 16 mph.

    Low: 79 °F

    Slight Chance
    T-storms and
    Breezy then
    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Sunny, with a high near 86. West wind 6 to 10 mph becoming south in the afternoon. Chance of precipitation is 30%.

    High: 86 °F

    Sunny then
    Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms. Mostly clear, with a low around 79. West wind 8 to 10 mph. Chance of precipitation is 20%.

    Low: 79 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: A slight chance of showers, with thunderstorms also possible after 2pm. Sunny, with a high near 84. Northwest wind 5 to 10 mph becoming east in the afternoon. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of thunderstorms before 8pm. Mostly clear, with a low around 81. Southeast wind 7 to 10 mph. Chance of precipitation is 10%.

    Low: 81 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly after 2pm. Sunny, with a high near 84. East wind 8 to 11 mph.

    High: 84 °F

    Chance
    T-storms

  • Saturday Night

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

    Low: 81 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a low around 80. South wind around 6 mph.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 86. Southwest wind 7 to 11 mph.
Wednesday Night
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 79. Breezy, with a west wind 11 to 16 mph.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Sunny, with a high near 86. West wind 6 to 10 mph becoming south in the afternoon. Chance of precipitation is 30%.
Thursday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 79. West wind 8 to 10 mph. Chance of precipitation is 20%.
Friday
A slight chance of showers, with thunderstorms also possible after 2pm. Sunny, with a high near 84. Northwest wind 5 to 10 mph becoming east in the afternoon. Chance of precipitation is 20%.
Friday Night
A slight chance of thunderstorms before 8pm. Mostly clear, with a low around 81. Southeast wind 7 to 10 mph. Chance of precipitation is 10%.
Saturday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Sunny, with a high near 84. East wind 8 to 11 mph.
Saturday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 81. East wind around 14 mph.
Sunday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 81. Breezy.
Monday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 81. Breezy.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
Key Biscayne FL
 25.69°N 80.17°W
Last Update:
2:31 am EDT May 13, 2026
Forecast Valid:
3am EDT May 13, 2026-6pm EDT May 19, 2026
 
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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