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.

Partly Cloudy

91°F

33°C

Humidity 57%
Wind Speed SE 9 mph
Barometer 29.98 in (1015.1 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 3 Aug 1:53 pm EDT
Extended Forecast for

Key Biscayne FL

Heat Advisory until August 3, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until August 3, 07:00pm

    NOW until 7:00pm Sun

    Heat Advisory

  • This Afternoon

    High: 89 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 10pm, then a slight chance of showers and thunderstorms after 5am. Mostly clear, with a low around 85. Southeast wind around 9 mph. Chance of precipitation is 30%.

    Low: 85 °F

    Chance
    T-storms

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms, mainly after noon. Sunny, with a high near 89. Heat index values as high as 106. South wind around 10 mph.

    High: 89 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 2am. Mostly clear, with a low around 85. Southeast wind around 10 mph.

    Low: 85 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 90. East wind around 9 mph.

    High: 90 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 84. East wind around 10 mph.

    Low: 84 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 89. East wind around 9 mph. Chance of precipitation is 60%.

    High: 89 °F

    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 83. East wind around 9 mph. Chance of precipitation is 60%.

    Low: 83 °F

    T-storms
    Likely

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Sunny, with a high near 89. Heat index values as high as 103. Southeast wind around 8 mph.
Tonight
A chance of showers and thunderstorms before 10pm, then a slight chance of showers and thunderstorms after 5am. Mostly clear, with a low around 85. Southeast wind around 9 mph. Chance of precipitation is 30%.
Monday
A 40 percent chance of showers and thunderstorms, mainly after noon. Sunny, with a high near 89. Heat index values as high as 106. South wind around 10 mph.
Monday Night
A 20 percent chance of showers and thunderstorms before 2am. Mostly clear, with a low around 85. Southeast wind around 10 mph.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 90. East wind around 9 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 84. East wind around 10 mph.
Wednesday
Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 89. East wind around 9 mph. Chance of precipitation is 60%.
Wednesday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 83. East wind around 9 mph. Chance of precipitation is 60%.
Thursday
Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 87. East wind around 8 mph. Chance of precipitation is 70%.
Thursday Night
Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 83. Chance of precipitation is 60%.
Friday
Showers and thunderstorms likely. Mostly sunny, with a high near 88. Chance of precipitation is 60%.
Friday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 83. Chance of precipitation is 60%.
Saturday
Showers and thunderstorms likely. Mostly sunny, with a high near 88. Chance of precipitation is 60%.
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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:
1:32 pm EDT Aug 3, 2025
Forecast Valid:
2pm EDT Aug 3, 2025-6pm EDT Aug 9, 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