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.

Thunderstorm

87°F

31°C

Humidity 72%
Wind Speed SE 7 mph
Barometer 30.09 in (1018.8 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 6 Jul 10:53 am EDT
Extended Forecast for

Key Biscayne FL

  • Today

    Today: Showers and thunderstorms likely, mainly after 5pm. Mostly sunny, with a high near 88. Heat index values as high as 103. South wind 7 to 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    T-storms
    Likely

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 84. South wind around 9 mph becoming north in the evening.

    Low: 84 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 88. Heat index values as high as 104. Southeast wind 5 to 10 mph. Chance of precipitation is 30%.

    High: 88 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly between 7pm and 8pm. Partly cloudy, with a low around 85. Southeast wind around 10 mph.

    Low: 85 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 89. Southeast wind 9 to 11 mph.

    High: 89 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 85. East wind 11 to 14 mph.

    Low: 85 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 90. East wind 11 to 13 mph.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 85. Breezy, with an east wind 15 to 17 mph.

    Low: 85 °F

    Partly Cloudy
    and Breezy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. Southeast wind around 14 mph, with gusts as high as 18 mph.

    High: 89 °F

    Chance
    T-storms

Detailed Forecast

Today
Showers and thunderstorms likely, mainly after 5pm. Mostly sunny, with a high near 88. Heat index values as high as 103. South wind 7 to 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 84. South wind around 9 mph becoming north in the evening.
Tuesday
A chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 88. Heat index values as high as 104. Southeast wind 5 to 10 mph. Chance of precipitation is 30%.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly between 7pm and 8pm. Partly cloudy, with a low around 85. Southeast wind around 10 mph.
Wednesday
Mostly sunny, with a high near 89. Southeast wind 9 to 11 mph.
Wednesday Night
Mostly clear, with a low around 85. East wind 11 to 14 mph.
Thursday
Sunny, with a high near 90. East wind 11 to 13 mph.
Thursday Night
Partly cloudy, with a low around 85. Breezy, with an east wind 15 to 17 mph.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. Southeast wind around 14 mph, with gusts as high as 18 mph.
Friday Night
A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 85. Breezy.
Saturday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 85.
Sunday
Mostly sunny, with a high near 90.
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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:
4:21 am EDT Jul 6, 2026
Forecast Valid:
11am EDT Jul 6, 2026-6pm EDT Jul 12, 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