National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Miami, Miami International Airport (KMIA)

Lat: 25.79°NLon: 80.32°WElev: 10ft.

Mostly Cloudy

86°F

30°C

Humidity 70%
Wind Speed SW 9 mph
Barometer 29.95 in (1014.2 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 29 Jul 8:53 am EDT
Extended Forecast for

Key Biscayne FL

Heat Advisory July 29, 11:00am until July 29, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 91. Heat index values as high as 106. Breezy, with a southwest wind 13 to 16 mph, with gusts as high as 21 mph.

    High: 91 °F

    Sunny then
    Slight Chance
    T-storms and
    Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 83. Breezy, with a southwest wind 11 to 17 mph.

    Low: 83 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Heat index values as high as 106. South wind 9 to 15 mph, with gusts as high as 20 mph.

    High: 91 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 82. Breezy, with a west wind 7 to 16 mph.

    Low: 82 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 90. South wind 5 to 11 mph.

    High: 90 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 82. West wind 7 to 13 mph.

    Low: 82 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. West wind 5 to 11 mph becoming south in the afternoon.

    High: 89 °F

    Partly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 83. South wind around 9 mph.

    Low: 83 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 88. Southeast wind around 11 mph.

    High: 88 °F

    Slight Chance
    T-storms

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 91. Heat index values as high as 106. Breezy, with a southwest wind 13 to 16 mph, with gusts as high as 21 mph.
Tonight
Partly cloudy, with a low around 83. Breezy, with a southwest wind 11 to 17 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Heat index values as high as 106. South wind 9 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 82. Breezy, with a west wind 7 to 16 mph.
Friday
Mostly sunny, with a high near 90. South wind 5 to 11 mph.
Friday Night
Mostly cloudy, with a low around 82. West wind 7 to 13 mph.
Saturday
A 50 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. West wind 5 to 11 mph becoming south in the afternoon.
Saturday Night
A 30 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 83. South wind around 9 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 88. Southeast wind around 11 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 84.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 83.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly 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:
4:16 am EDT Jul 29, 2026
Forecast Valid:
9am EDT Jul 29, 2026-6pm EDT Aug 4, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation