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

83°F

28°C

Humidity 74%
Wind Speed S 3 mph
Barometer 30.05 in (1017.6 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 16 Jun 11:53 pm EDT
Extended Forecast for

Key Biscayne FL

  • Overnight

    Overnight: Partly cloudy, with a low around 83. South wind around 8 mph.

    Low: 83 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 89. Heat index values as high as 103. South wind 10 to 14 mph.

    High: 89 °F

    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 83. South wind around 11 mph.

    Low: 83 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 89. Heat index values as high as 103. Southeast wind 10 to 13 mph.

    High: 89 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 84. Southeast wind 10 to 13 mph.

    Low: 84 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. South wind around 14 mph.

    High: 88 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 2am. Mostly clear, with a low around 83. South wind 7 to 10 mph.

    Low: 83 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 88. South wind 7 to 9 mph.

    High: 88 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 82. South wind 7 to 9 mph.

    Low: 82 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Partly cloudy, with a low around 83. South wind around 8 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 89. Heat index values as high as 103. South wind 10 to 14 mph.
Wednesday Night
A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 83. South wind around 11 mph.
Thursday
Mostly sunny, with a high near 89. Heat index values as high as 103. Southeast wind 10 to 13 mph.
Thursday Night
Partly cloudy, with a low around 84. Southeast wind 10 to 13 mph.
Juneteenth
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. South wind around 14 mph.
Friday Night
A 20 percent chance of showers and thunderstorms before 2am. Mostly clear, with a low around 83. South wind 7 to 10 mph.
Saturday
A 40 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 88. South wind 7 to 9 mph.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 82. South wind 7 to 9 mph.
Sunday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 88.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 83.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Monday Night
A 10 percent chance of showers and thunderstorms. Partly cloudy, with a low around 83.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Key Biscayne FL
 25.69°N 80.17°W
Last Update:
6:02 pm EDT Jun 16, 2026
Forecast Valid:
12am EDT Jun 17, 2026-6pm EDT Jun 23, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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